Operating Instructions
METRAHITIM XTRA BT (M273A/D/W)
METRAHITIM E-DRIVE BT (M274A/B)
METRAHITIM TECH BT (M272A/B)
Insulation Tester, Milliohmmeter,
&
&
3-447-035-03
8/2.22
TRMS Multimeter, Inter-Turn Short Circuit Tester
Contents
Page Contents
Page
8.2
Insulation Resistance Measurement – RISO Function
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only) .... 24
8.3
Inter-Turn Short Circuit Measurement – COIL Function
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE only) ......... 26
8.4
8.5
Absorption Index Measurement – DAR
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only) .... 34
Polarization Index Measurement – PI
4.1
Connections, Keys, Rotary Switch, Symbols
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only) .... 35
(depending on instrument variant) .............................................. 7
Rotary Switch Position Symbols
4.3
8.6.1 Alternating Voltage and Frequency Measurement V AC and Hz with
Selectable Low-Pass Filter............................................................ 36
(depending on instrument variant) ............................................. 8 8.6.2 Duty Cycle Measurement – Duty AC
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only).......... 37
8.6.3 RPM Measurement – RPM AC
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only).......... 37
8.9
Temperature Measurement with Resistance Thermometers –
Temp RTD.................................................................................. 42
8.13 Milliohm Measurement – Rlo (2-wire measurement)
6.5.1 Brightness ................................................................................... 13
6.5.2 Display Profile.............................................................................. 13
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE only) ......... 45
8.15.1 Direct and Pulsating Current Measurement, Direct Connection, –
A DC and A (AC+DC) ................................................................... 49
8.15.2 Alternating Current and Frequency Measurement,
Direct Connection, – AAC and Hz.................................................. 50
8.15.3 Direct and Pulsating Current Measurement with
Current Clamp Sensor – ADC und A (AC+DC)................................ 51
8.15.4 Alternating Current Measurement with Current Clamp
Sensor – AAC and Hz................................................................... 52
7.4.1 Digital Display.............................................................................. 18 9.2.1 METRAHIT IM Data Reader (PC) ................................................. 57
7.4.2 Analog Display............................................................................. 18 9.2.2 Terminal Program (PC) ................................................................. 57
7.5
Measured Value Storage – Data Function
(Auto-hold/Compare) ................................................................. 18
7.6.1 Remote read-out and storage via the Z270S probe
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only) .......... 20
11.2 Fuses......................................................................................... 65
7.7.3 Memory....................................................................................... 23
Gossen Metrawatt GmbH
3
12.1 General.......................................................................................66
12.2 Technical Data for Measurement Cables
(included with KS17-2 cable set and Z270S probe)...................66
4
Gossen Metrawatt GmbH
battery display. Moreover, compliance with the specified data
is no longer assured when the battery is weak.
1
Safety Instructions
Observe this documentation, in particular all included safety infor-
mation, in order to protect yourself and others from injury, and to
prevent damage to the instrument.
•
Be prepared for the occurrence of unexpected voltages at
devices under test (e.g. defective devices). For example,
capacitors may be dangerously charged.
•
•
•
Do not perform any measurements in electrical circuits with
corona discharge (high-voltage).
•
•
•
Carefully and completely read and adhere to these operating
instructions, as well as the instrument’s condensed operating
metrawatt.com. Retain these documents for future reference.
Dangerous pulsating voltages in HF electrical circuits! Use
caution when performing measurements there.
Do not use the instrument if the fuse cover has been
removed. Touch contact with dangerous voltage is otherwise
possible.
Tests/measurements may only be performed by a qualified
electrician, or under the supervision and direction of a quali-
fied electrician. The user must be instructed by a qualified
electrician concerning performance and evaluation of the
tests/measurements.
•
•
The instrument is equipped with fuses. The instrument may
only be used as long as the fuses are in flawless condition.
Defective fuses must be replaced.
The multimeter may only be operated by persons who are
capable of recognizing touch hazards and taking the appro-
priate safety precautions. Touch hazards in accordance with
the standard prevail anywhere, where dangerous voltages
may occur. Avoid working alone when taking measurements
which involve touch hazards. Be certain that a second person
is present.
Plugging in the measurement cables must not necessitate any
undue force.
•
•
Never touch conductive ends (e.g. of test probes).
Fully unroll all measurement cables before starting a test/mea-
surement. Never perform a test/measurement with the mea-
surement cable rolled up.
•
•
•
•
Observe and comply with all safety regulations which are
applicable for your work environment.
•
•
Ensure that alligator clips, test probes or Kelvin probes make
good contact.
®
Wear suitable and appropriate personal protective equipment
(PPE) whenever working with the instrument.
The instrument is equipped with a Bluetooth module. Deter-
mine whether or not use of the implemented frequency band
of 2.402 to 2.480 GHz is permissible in your country.
Use only the specified accessories (included in the scope of
delivery or listed as options) with the instrument.
•
Always create a backup copy of your measurement data.
Carefully and completely read and adhere to the product doc-
umentation for optional accessories. Retain these documents
for future reference.
Battery Pack
The instrument is powered by a rechargeable battery pack.
Observe the following points for this reason:
•
•
Use the instrument in undamaged condition only.
•
Carefully and completely read and comply with the “supple-
mentary safety information sheet” for the Z270A or Z270G
battery pack (3-349-997-15 or 3-447-030-51).
The manufacturer’s safety data sheet is included with the sup-
plementary sheet. Read and comply with this supplementary
sheet as well.
Inspect the instrument before use. Pay particular attention to
damage, interrupted insulation or kinked cables.
•
•
Damaged components must be replaced immediately.
Accessories and cables may only be used as long as they’re
fully intact.
•
•
•
•
•
The battery pack may not be exposed to direct sunlight
(whether it’s inside or outside of the instrument).
•
•
•
Inspect accessories and all cables and before use. Pay partic-
ular attention to damage, interrupted insulation or kinked
cables.
Only charge the battery pack within a temperature range of
10 to 45 °C.
If the instrument or its accessories don’t function flawlessly,
permanently remove the instrument/accessories from opera-
tion and secure them against inadvertent use.
Only store the battery pack within a temperature range of
-20 to 50 °C.
If the instrument or accessories are damaged during use, for
example if they’re dropped, permanently remove the instru-
ment/accessories from operation and secure them against
inadvertent use.
Only operate the battery pack within a temperature range of
-10 to 50 °C.
Risk in case of full depletion: In some cases it’s no longer pos-
sible to recharge a fully depleted battery pack (immediate fail-
ure), in which case it must be replaced. Full depletion may
also result in a shortened service life.
In order to prevent full depletion, charge the battery pack at
the mains at least once a year, but preferably at more fre-
quent, regular intervals.
•
Do not use the instrument and its accessories after long peri-
ods of storage under unfavorable conditions (e.g. humidity,
dust or extreme temperature).
•
•
Do not use the instrument and its accessories after extraordi-
nary stressing due to transport.
•
Transporting the battery pack:
Only use the instrument and its accessories within the limits of
the specified technical data and conditions (ambient condi-
tions, IP protection code, measuring category etc.).
Observe the “supplementary safety information sheet” for the
Z270A or Z270G battery pack (3-349-997-15 or
3-447-030-51)!
•
Do not use the instrument in potentially explosive atmo-
spheres.
•
•
The instrument must not be exposed to direct sunlight.
The instrument and the accessories may only be used for the
tests/measurements described in the documentation for the
instrument.
•
•
Maximum permissible voltage between the voltage measuring
sockets or all connector sockets and ground is 1000 V for
measuring category IIIand 600 V for measuring category IV.
The multimeter may only be operated with installed recharge-
able battery pack or mains module. Dangerous current and
voltage are otherwise not indicated! The instrument may also
be damaged.
•
Weak (undercharged) battery: Do not perform any safety-rele-
vant measurements if the “battery low” symbol appears in the
Gossen Metrawatt GmbH
5
2.5
Manufacturer’s Guarantee
2
Applications
All METRAHIT digital multimeters and calibration instruments are
guaranteed for a period of 3 years after date of shipment. The
manufacturer’s guarantee covers materials and workmanship.
Damages resulting from use for any other than the intended pur-
pose or operating errors, as well as any and all consequential
damages, are excluded.
Please read this important information!
2.1 Intended Use / Use for Intended Purpose
The METRAHIT IM XTRA BT is multimeter, milliohmmeter, insula-
tion measuring instrument, coil tester and data logger in one. The
METRAHIT IM E-DRIVE BT is a multimeter, milliohmmeter, insula-
tion measuring instrument, coil tester and data logger for hybrid
and electric drives. The METRAHIT IM TECH BT is multimeter,
milliohmmeter and data logger in one.
The calibration certificate confirms that the product’s specified
technical data were complied with at the point in time of calibra-
tion. We guarantee compliance with the specified technical data
within the permissible tolerances for a period of 12 months after
delivery.
All three are portable instruments which can be held in the hand
while performing measurements. They can be used to perform
the measurements described in these operating instructions and
in the quick reference guide.
The guarantee can be extended to 5 years by registering free of
charge on the myGMC portal.
Performance characteristics of the individual models: see “Over-
The multimeter is equipped with an automatic socket blocking
mechanism for your safety, and in order to safeguard your instru-
ment. This mechanism is linked to the rotary switch and only
allows access to those jacks which are actually required for the
selected function. It also prevents the user from turning the rotary
switch to impermissible functions after the measurement cables
have already been plugged in.
3
Documentation
3.1
Product Variants
This documentation describes several instrument variants. Func-
tions may be described which are not included in your instrument.
Observe respective variant identification.
Illustrations may differ from your instrument.
Safety of the operator, as well as that of the instrument, is only
assured when it’s used for its intended purpose.
3.2
Firmware Version
Safety of the operator, as well as that of the instrument, is only
assured when it’s used for its intended purpose.
These operating instructions describe an instrument based on
firmware version 1.005.001.
Complete information concerning your instrument’s firmware ver-
2.2
Use for Other than Intended Purpose
Using the instrument for any purposes other than those described
in the condensed operating instructions or these instrument oper-
ating instructions is contrary to use for intended purpose.
3.3
Symbols
The following symbols with the meanings listed below are used in
this documentation.
2.3
Liability and Guarantee
Gossen Metrawatt GmbH assumes no liability for property dam-
age, personal injury or consequential damage resulting from
improper or incorrect use of the product, in particular due to fail-
ure to observe the product documentation. Furthermore, all guar-
antee claims are rendered null and void in such cases.
Danger Symbols
Warning concerning a point of danger
(attention, observe documentation!)
!
Nor does Gossen Metrawatt GmbH accept any liability for data
loss.
Warning concerning dangerous voltage at the measurement
input: U > 15 V AC or U > 25 V DC
2.4
Opening the Instrument / Repairs
Acoustic Warnings
The instrument may only be opened by authorized, trained per-
sonnel in order to ensure flawless, safe operation and to assure
that the guarantee isn’t rendered null and void. Even original
replacement parts may only be installed by authorized, trained
personnel.
High-voltage warning: > 1000 V (intermittent acoustic signal)
Very high amperage warning: > 1 A (continuous acoustic signal)
When the instrument is opened, voltage conducting parts may be
exposed. The instrument must be disconnected from the measur-
ing circuit before performing repairs or replacing parts. If repair of
a live, open instrument is required, it may only be carried out by
trained personnel who are familiar with the dangers involved.
User Interface Symbols in the Following Sections
...
...
Scroll through main menu
Scroll through submenu
Unauthorized modification of the instrument is prohibited.
Select decimal point,
increase/decrease measuring range
If it can be ascertained that the instrument has been opened by
unauthorized personnel, no guarantee claims can be honored by
the manufacturer with regard to personal safety, measuring accu-
racy, compliance with applicable safety measures or any conse-
quential damages.
Increase/decrease value
(test voltage for insulation resistance measurement or
threshold for continuity test)
If a guarantee seal is included and it has been damaged or
removed, all guarantee claims are rendered null and void.
6
Gossen Metrawatt GmbH
4
Operating Overview
4.1
Connections, Keys, Rotary Switch, Symbols (depending on instrument variant)
METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT
METRAHIT IM TECH BT
1
2
1
15
15
section 6.5
section 6.5
2
3
3
14
14
4
13
12
4
5
13
12
5
6
6
11
8
11
8
9
9
10
Max. 1000 V!
Max. 1000 V!
3 Softkeys (menu-dependent keys for selecting switching functions and parameters, and for starting/ending measurements)
4 STORE: Save key or push/print function for IZYTRONIQ
5 OK: Key for acknowledgment and for restarting the instrument from the standby mode by pressing and holding
7 DAkkS calibration seal
8 Connector sockets for current measurement with automatic blocking
: ground input
A: current measurement input
9 S+/S–: sense terminals for 4-wire measurements (m /4)
10 Extended connection for Z270S probe
(operating instructions 3-349-996-15) (not METRAHIT IM TECH BT)
11 Connector sockets for voltage measurement with automatic blocking
: ground input
V, , Temp,
,
,
COIL measurement input (not METRAHIT IM TECH BT)
12 ESC: Operating mode menu:
Press key briefly: Exit the menu level – jump back to a higher level, exit parameters entry without saving
Press and hold: The instrument is switched to the standby mode. Switch back on by pressing and holding the OK key.
13 MENU: Key for accessing the five main menus.
14 Scroll keys:
Increase parameter values
Operating mode menu: Selection of individual menu items
Decrease values
Operating mode menu: Selection of individual menu items
Increase measuring range or move decimal point to the right (Man function)
Decrease measuring range or move decimal point to the left (Man function)
15 Brightness sensor
Gossen Metrawatt GmbH
7
1 Momentary measuring function
2 Memory symbol
4.2
Symbols Used in the Digital Display
3
Important, in this case: Uext (interference voltage) or
warning regarding dangerous voltage: U > 15 V AC or U > 25 V DC
1
2
3
4
5 Func: switch back and forth amongst the functions of a given rotary
switch position
REC
6 Data MinMax: switch amongst “Data” (freeze measured value), “Min-Max
storage” and deactivate both functions
7 Man Auto: switch back and forth between manual and automatic measur-
ing range selection
3
9
10
8
8 Display of the selected measuring range with manual measuring range
selection:
11
Select a lower measuring range
Select a higher measuring range
9 Selected test voltage
12
10 Select test voltage:
Select a larger test voltage
Select a smaller test voltage
11 Digital display with decimal point and polarity display
Measuring range exceeded: OL is displayed
12 Scale for analog display
1%
7
6
5
13 Polarity selection
14 Zero: Zero balancing active
15 Start/Stop: For measurements which are not started automatically
16 Ip: test current
4.3
Rotary Switch Position Symbols (depending on instrument variant)
Switches
RISO1
FUN Display
C
Measuring Function
Additional Current Clamp Sensor Function
(via the “Setup for present measurement” menu)
Clip = 1:1/10/100/1000
0/4 RISO M
Insulation resistance measurement
Uext
Pulsating voltage, TRMS DC + AC, 15 Hz ... 500 Hz,
only for detection of interference voltage! (before starting
measurement)
Uset
Selectable test voltage: 50, 100, 250, 500or 1000 V
Applied/measured test voltage during measurement
UISO
Coil1
1
Coil U-V, U-W, V-W [µs] Inter-turn short circuit test with optional coil adapter (COIL
TEST ADAPTER or COIL ADAPTER XTRA)
Coil1
Coil1
V~
Hz
2
3
DAR [k/s]
Dielectric absorption rate
PI [k/s]
Polarization index
0/5 VAC
Alternating voltage, AC TRMS, full bandwidth
Voltage frequency, full bandwidth
Duty cycle measurement
AC clamp (V): Current clamp sensor
Hz clamp (V): Current clamp sensor
1
2
3
4
Hz
Hz
Duty AC %1
RPM AC1
V AC Fil
Hz
RPM measurement
V~
V
Alternating voltage, AC TRMS, with low-pass filter (1 kHz)
Direct voltage
0/3 VDC 2
DC clamp (V): Current clamp sensor
V
1
V (AC+DC) 2
Mixed voltage, TRMS
AC + DC clamp (V): Current clamp sensor
VACDC
=
V2AC + V2DC
V
2
V (AC+DC) Fil 2
Mixed voltage, TRMS AC DC, with low-pass filter (1 kHz)
(DC) resistance
0/4
1
F
, nF, F
Capacitance
Temp RTD
Temp TC
2
C Pt 100/1000
C, type K
Temperature with Pt 100 / Pt 1000 resistance thermometer
Temperature, type K thermocouple
Continuity test with acoustic signal
Diode voltage where I is constant
3
0/2
1
V
Rlo1
0
RLO/2L
RLO/4W
2-wire milliohm measurement where IP = /+/- 200 mA
4-wire milliohm measurement where IP = 200 mA or 1 A
Direct current amperage
m/4
0
A
A
A
A
0/4 A DC
1
2
3
A (AC+DC)
Mixed current amperage, AC DC TRMS
Alternating current amperage, AC TRMS
Current frequency
AAC
Hz
1
2
METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only
Clip = off
8
Gossen Metrawatt GmbH
4.4
Symbols on the Instrument
Warning concerning a point of danger
(attention, observe documentation!)
!
Ground
CAT III/IV Measuring category III (1000 V) or IV (600 V) instrument
Continuous, doubled or reinforced insulation
European conformity marking
This instrument may not be disposed of with house-
hold trash. Further information regarding the WEEE
senmetrawatt.com under the search term WEEE
Calibration seal (blue seal):
Consecutive number
XY123
D-K-
15080-01-01
2019-09
Deutsche Akkreditierungsstelle GmbH – calibration lab
Registration number
Date of calibration (year – month)
See also “Recalibration” on page 65
Gossen Metrawatt GmbH
9
5
Initial Startup
Note
The optional M27x charger (Z270L) includes primary con-
nectors for Central Europe, the UK, North America and
Asia.
The instrument must first be supplied with power. The instrument
is powered by the rechargeable battery pack included in the
scope of delivery.
The rechargeable battery packis equipped with a patented, con-
tact-protected module socket, which makes replacement possi-
ble without interrupting the measuring circuit.
Inserting the Battery Pack
The battery pack has to be reinserted after charging.
5.1
Battery Pack
➭
Push the battery
pack into the battery
compartment on the
back of the instru-
ment until noticeable
resistance is de-
tected (a).
A quick-change, rechargeable lithium polymer battery (Z270A/
Z270G) with matching USB power pack, as well as a USB cable
(micro USB / type B), are included with the instrument.
!
Attention!
Observe safety information regarding the battery pack
➭
Press the two locking
tabs on the left and
right sides of the in-
strument together at
the same time (b) and
push the battery
pack to its final posi-
tion.
For initial startup, first charge the battery pack and then insert it
into the instrument.
The battery pack is subject to self-discharging at a rate of roughly
25% per year.
b
Note
b
➭
Release the locking
tabs. The battery
pack snaps into
place.
Removing the Battery Pack during Periods of Non-Use
The integrated quartz movement draws power from the
battery pack even when the instrument is switched off.
It’s advisable to remove the battery pack before long peri-
ods of non-use for this reason (e.g. vacation). This pre-
vents excessive depletion, which may result in damage to Removing the Battery Pack
the lithium-ion batteries under unfavorable conditions.
Stored measurement data are not lost when the battery pack is
removed. Selected operating parameters are retained in memory.
Time and date, on the other hand, must be reset.
Charging the Battery Pack
!
Attention!
Switch the instrument off and disconnect it from the
measuring circuit before removing the battery pack.
!
Attention!
The battery pack must be removed from the instrument
for charging (see “Removing the Battery Pack” on
page 10).
➭
➭
Simultaneously press
and hold the two
locking tabs (a).
➭
➭
➭
Connect the
USB cable to
the type B USB
port on the USB
power pack.
Slide the battery
pack out towards the
top of the instrument
(b).
Connect the
USB cable to
the micro USB
port on the bat-
tery pack.
Micro USB
5 V DC, 2 A
a
Plug the USB
power pack into
an electrical
outlet.
a
USB Cable /
Power Pack
Battery Display
(charge level)
The charge LED
lights up yellow
during the charging
process. The
Approx. 2 h
The current charge level
is indicated in the display at the top right (see “Connections, Keys,
page 7).
charging cable can
be removed as
The exact charge level can be queried as a percentage under Info
in the General Setup menu:
soon as the charge LED lights up green at the end of the charging
process.
Charging takes approximately 2 hours.
➭
➭
Press the MENU key to this end.
Then press the General Setup softkey.
Select the Info parameter with the help of the scroll keys.
10
Gossen Metrawatt GmbH
Charge level symbols:
Battery full
Battery OK
Battery weak
Charge the battery pack as soon as possible.
!
Attention!
Do not perform any safety-relevant measure-
ments if the “battery low” symbol appears in
the battery display.
Moreover, compliance with the specified
data is no longer assured when the battery is
weak.
Battery (almost) dead, U < 3.3 V
!
Attention!
The instrument is switched off automatically:
5.2
Switching the Instrument On
➭
The instrument is switched on automatically after selecting
any rotary switch position other than OFF.
Note
Electrical discharge and high frequency interference may
cause incorrect displays to appear, and may disable the
measuring sequence.
Disconnect the instrument from the measuring circuit. Switch
the instrument off and back on again in order to reset. If
this procedure is unsuccessful, briefly remove the battery
Gossen Metrawatt GmbH
11
deleted with the help of the BackSp (backspace) key. You can
move the blinking cursor in the entry field to the desired position
within the word using the < or > softkey in order to add charac-
ters, or to delete them with the help of the BackSp softkey. The
Shift softkey can be used to switch back and forth between upper
and lower case letters, as well as numbers and special charac-
ters. Finished entries are confirmed by pressing the Enter key.
6
System Settings
After initial startup, basic system settings have to be selected, for
example date and time. System settings can be changed at any
time.
System settings can be accessed in the General Setup menu.
6.2
Firmware
Viewing the Instrument’s Current Firmware Version
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Info parameter with the help of the scroll keys.
The Version parameter indicates the current software (firm-
ware) revision level.
➭
The instrument is returned to the measuring mode after press-
ing the ESC key twice.
Note
If settings are selected which deviate from the default
configuration, e.g. “Bluetooth = On” or “Brightness =
Auto”, battery operating time may be less than specified
in the technical data.
> General Setup > Info > Version
MENU
Updating the Firmware
Complete information concerning current software and firmware,
as well as instrument updates and options, can be found in the
myGMC portal. Please register for free, after which you’ll have
access to the downloads and will always receive the latest infor-
mation about your instrument.
6.1
Digital Keyboard
Text is entered at the instrument via a keyboard which appears at
the display:
Entry Prompt
Entry Field
Keypad
In order to update the firmware, download the current firmware as
a ZIP file and unpack it.
!
Attention!
Read and adhere to the README file.
It contains complete information on supported instru-
ments, system requirements, installation and version
changes.
Follow the instructions in the README file in order to install the
firmware update.
6.3
Language Selection
English or German can be selected as the user interface lan-
guage.
Shift
<
>
BackSp
Enter
➭
➭
➭
Press the MENU key.
Keypad:
Entry field:
Entry field:
Entry field:
Entry field:
Press the General Setup softkey.
Switch
Scroll left
Scroll
right
Delete
charac-
ters from
right
Accept
pass-
Select the Language parameter with the help of the scroll
keys.
between
upper/
lower
wordfrom
entry field
➭
➭
➭
Switch to the settings menu with the help of the scroll key.
Select the desired language with the scroll keys.
case and
symbols
Acknowledge by pressing the OK key. The input cursor jumps
back to the parameters list.
Character Selection
within the Keypad
➭
➭
Return to the main menu by pressing the ESC key or the MENU
key.
The instrument is returned to the measuring mode after press-
ing the ESC key once more.
Transfer of the charac-
ter from the keypad
to the entry field
> General Setup > Language German/English
2x
MENU
OK
ESC
Select the individual characters from the keypad using the scroll
keys. The position of the cursor is indicated by the green back-
ground at the respective key. Acknowledge the selected charac-
ter by pressing the OK key, after which the character is transferred
to the entry field. The last entered character or characters can be
6.4
Time and Date Settings
➭
Press the MENU key.
➭
Press the General Setup softkey.
12
Gossen Metrawatt GmbH
➭
Select the System parameter with the help of the scroll
keys.
6.7
Configuring Password Protection
No password is assigned upon delivery, or after restoring the
default settings.
➭
➭
Switch to the submenu with the help of the scroll key.
A password can be selected if required. The following parameters
are then password protected:
Select the Date or Time parameter with the help of the
scroll keys.
•
RISO: Changes to test voltage
(Test voltage remains permanently set after changing it with
the password.)
➭
Acknowledge the selected parameter by pressing the OK key.
The entry cursor jumps to a random position in the settings
menu.
•
M/4: Changes to test current
➭
➭
➭
➭
Select the desired entry position with the scroll keys and
change the respective value with the scroll keys.
(The default setting is 200 mA. Test current is reset to this
value when the instrument is switched off.)
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
As long as the instrument remains switched on, the password
only needs to be entered once. It has to be entered again after
switching the instrument off.
Return to the main menu by pressing the ESC key twice or the
MENU key once.
Any password can be selected subject to the following restric-
tions:
The instrument is returned to the measuring mode after press-
ing the ESC key once more.
Maximum length:
Content:
31 characters
Any desired alphanumeric characters
The password is entered via the digital keyboard (see section 6.1
> General Setup System Time
09:50:20
> General Setup System Date
MENU
MENU
3x
OK
OK
ESC
6.7.1 Selecting or Changing a Password
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
13:06:2017
OK
OK
Select the System parameter with the help of the scroll
keys.
3x
ESC
➭
➭
Switch to the submenu with the help of the scroll key.
Select the Change Password parameter with the help of the
scroll keys.
6.5
Digital Display Settings
➭
➭
Acknowledge the selected parameter by pressing the OK key.
Old Password appears in the header and the digital keyboard is
displayed.
Brightness and the display profile (light or dark mode) can be
selected for the display.
6.5.1 Brightness
If a password hasn’t been selected yet: Press the Enter soft-
key.
Brightness of the digital display can be set between 1 (minimum
brightness) and 9 (maximum brightness).
If a password has already been selected: Enter the password
via the digital keyboard.
It can also be set to automatic. In this case, digital display bright-
ness is adjusted depending on the intensity of the light which
strikes the brightness sensor.
➭
Press the Enter softkey.
New Password appears in the header and the digital keyboard
is displayed.
➭
➭
Enter the (new) password.
> General Setup System Brightness:
1 ... 9, Auto
MENU
Press the Enter softkey.
Acknowledge Password appears in the header and the digital
keyboard is displayed.
3x
OK
OK
ESC
➭
➭
Enter the password again.
6.5.2 Display Profile
Press the Enter softkey.
The password has been set or changed.
Two different views can be selected here – black lettering against
a bright background (light mode) or vice versa (dark mode).
➭
The menu mode is exited by pressing ESC three times and the
instrument is returned to the measuring function.
> General Setup System Display Profiles:
MENU
> General Setup System
Changing the Password
MENU
Inverted or Normal
OK
OK
3x
ESC
6.7.2 Deactivating Password Protection
A selected password can be deleted. Password protection is
deactivated as a result.
Default setting: White lettering against a dark background
6.6 Set Display of Leading Zeros
➭
➭
➭
Press the MENU key.
The Display Zeros parameter can be used to specify whether lead-
ing zeros will appear or be suppressed at the measured value dis-
play.
Press the General Setup softkey.
Select the System parameter with the help of the scroll
keys.
➭
➭
Switch to the submenu with the help of the scroll key.
> General Setup System Display Zeros:
000.0 / 0.0 3x
MENU
Select the Change Password parameter with the help of the
scroll keys.
OK
OK
ESC
Gossen Metrawatt GmbH
13
➭
Acknowledge the selected parameter by pressing the OK key.
Old Password appears in the header and the digital keyboard is
displayed.
➭
Acknowledge by pressing the OK key.
A list of possible function expansions appears. Additional
functions which have not been enabled are identified in the list
by means of a red padlock.
➭
➭
Enter the password via the digital keyboard.
➭
➭
Select the previously purchased function expansions with the
help of the scroll keys.
Press the Enter softkey.
New Password appears in the header and the digital keyboard
is displayed.
Press the Activate softkey.
Password appears in the header and prompts you to enter your
feature key.
➭
➭
Press the Enter softkey without making any entry.
Acknowledge Password appears in the header and the digital
keyboard is displayed.
➭
Enter the feature key using the digital keyboard. The digital
Press the Enter softkey again without making any entry.
The password is deleted. The menu mode is exited by press-
ing ESC three times and the instrument is returned to the mea-
suring function.
➭
➭
Acknowledge your entry by pressing the Enter softkey,
Successful enabling is confirmed by a message. The enabled
additional functions are then identified in the list by means of a
green checkmark.
> General Setup System
Changing the Password
MENU
> General Setup System Feature activation
MENU
Note
If you forget your password, please contact our product
6.10 Switching the Instrument Off
The instrument can be switched off manually. The instrument
switches itself off automatically as well (auto off).
6.8
Viewing the Instrument’s Name
Each instrument has its own name so that several instruments
can be distinguished from one another. The name consists of
“MetraHit IM” and the last two elements of the instrument’s hard-
ware address.
6.10.1 Switching the Instrument Off Manually
➭
The instrument is switched off automatically by setting the ro-
tary switch to the OFF position. The display goes blank.
The instrument’s name must be known in order to be able to
identify it, for example when it’s connected to a PC.
6.10.2 Automatic Shutdown (auto-off)
The period of time after which the instrument is shut down auto-
matically, regardless of whether a measurement or menu view is
open, can be set to a value within a range of 10 to 59 minutes.
Alternatively, automatic shutdown can be deactivated for continu-
ous operation.
The name cannot be changed.
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Interface parameter with the help of the scroll
keys.
The instrument is switched off automatically if the measured value
remains unchanged for a long period of time (maximum measured
value fluctuation of approx. 0.8% of the measuring range per min-
ute or 1C or 1 F per minute), and if none of the keys or the
rotary switch have been activated before a selected period of time
in minutes has elapsed.
➭
➭
The Name parameter specifies the instrument’s name.
The instrument is returned to the measuring mode after press-
ing the ESC key twice.
> General Setup Interface Name
MENU
Note
Exceptions:
6.9
Installing a Functions Expansion
Transmission and memory mode operation, continuous
operation and whenever a dangerous voltage is applied
to the input (U > 15 V AC or U > 25 V DC).
You can purchase additional functions. Available functions expan-
sions can be found under “Included Features” and “Scope of
order information.
Shutdown is acknowledged with a brief acoustic signal.
After concluding your purchase, you’ll receive a feature key (pass-
word) which is used to enable your additional functions. The fea-
ture key has to be entered at the instrument.
> General Setup System Auto-OFF:
MENU
10 ... 59 min/Off
OK
OK
!
Attention!
When ordering, specify the serial number of the instru-
ment for which you would like to purchase the functions
expansion. The feature key can only be used with this
one specific instrument.
3x
ESC
6.11 Default Settings (instrument reset)
All of the settings which you have changed can be returned to
their default settings here.
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the System parameter with the help of the scroll
keys.
Note
Password protection is also reset, i.e. deactivated.
➭
➭
Switch to the submenu with the help of the scroll key.
Select the Feature activation parameter with the help of the
scroll keys.
Note
retained.
14
Gossen Metrawatt GmbH
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the System parameter with the help of the scroll
keys.
➭
➭
Switch to the submenu with the help of the scroll key.
Select the Default Settings parameter with the help of the
scroll keys.
➭
➭
Acknowledge by pressing the OK key.
The following warning appears: “Reset?”. The settings are not
reset until you scroll to Yes with the scroll key and acknowl-
edge by pressing OK. Resetting can be aborted by scrolling to
No with the scroll key and pressing OK.
> General Setup System Default Settings:
MENU
Yes/No prompt
OK
OK
3x
ESC
Gossen Metrawatt GmbH
15
7
Control Functions
7.1
Help
The following information can be displayed for switch positions
and basic functions after they’ve been selected with the rotary
selector switch:
•
•
•
•
Explanation of the measurement
Measuring ranges
Wiring diagram
QR code link for accessing the operating instructions
ESC
➭
➭
Press the MENU key to this end.
Then press the “Help for present measurement” softkey.
Comments concerning the measurement are displayed.
➭
➭
The measuring ranges and test voltages (2/4) are displayed by
pressing the 1/2 softkey.
The wiring diagram (3/4) is displayed by pressing the 2/4 soft-
key.
➭
➭
The QR code (4/4) is displayed by pressing the 3/4 softkey.
You can return to the help text (1/4) by pressing the 4/4 soft-
key.
➭
➭
The display is returned to the menu by pressing the ESC key
once.
1/4
The display can be returned to the measurement by pressing
the ESC key twice.
2/4
3/4
4/4
16
Gossen Metrawatt GmbH
7.2
Selecting Measuring Functions and Measuring Ranges
7.3
Zero Offset / Relative Measurements
Zero offset or a reference value for relative measurements can be
stored to memory depending upon deviation from the zero point:
7.2.1 Automatic Range Selection
The multimeter is equipped with auto-ranging for all measuring
functions except for temperature measurement, as well as diode
and continuity testing. Auto-ranging is active as soon as the in-
strument is switched on. The instrument automatically selects the
measuring range which allows for highest possible resolution of
the applied quantity. When the instrument is switched to fre-
quency measurement, the previously selected voltage measuring
range remains active.
Deviation from zero point
– with short-circuited measurement cables for V, , A
– with open input for capacitance unit of measure F
Display
ZERO
0 ... 200 digits
The relevant reference or correction value is deducted individually
for the respective measuring function as an offset from all future
measurements and remains in memory until deleted, or until the
multimeter is switched off.
AUTO-Range Function
Zero balancing and reference value adjustment can be used with
auto-ranging, as well as for manual measuring range selection.
The multimeter is switched automatically to the next higher range
at (3099 d + 1 d 0310 d), and to the next lower range at
(280 d – 1 d 2799 d).
In the case of high resolution (available depending upon measur-
ing function), the multimeter is switched automatically to the next
higher range at (30,999 d + 1 d 03100 d), and to the next
lower range at (2800 d – 1 d 27,999 d).
Note:
Zero offset is available for the following measuring functions and
switch positions: RISO, Coil, DAR, PI, Hz, Duty AC, RPM AC, ,
Temp RTD (the RLeads function is offered here as an alternative),
Temp TC, Continuity, Diode, RLO/2L (ZERO is also activated after
pressing the START key!) and RLO/4W (the thermal compensation
function is offered here as an alternative).
7.2.2 Manual Range Selection
Auto-ranging can be deactivated and measuring ranges can be
selected manually in accordance with the following table by
pressing the Man / Auto button.
Zero Balancing
➭
Plug the measuring cables into the instrument and connect
the free ends to each other, except for capacitance measure-
ment and current measurement in which case the ends of the
cables are not connected to each other.
The desired measuring range can then be selected with the or
scroll key.
The instrument is automatically returned to automatic range se-
lection when the Man / Auto key is pressed, the rotary switch is ac-
tivated or the instrument is switched off and back on again.
➭
Briefly press the Zero softkey.
The value measured at the moment the key is pressed serves
as a reference value. The instrument acknowledges zero bal-
ancing with an acoustic signal, and “Zero” and the reference
value appear at the display. The Zero softkey is displayed with
a green background.
Overview: Auto-Ranging and Manual Range Selection
Function
Display
Man /
Auto
Manual mode active:
utilized measuring range is fixed
Man
➭
Zero balancing can be cleared by once again pressing the
Zero softkey.
Range switching sequence for:
V: 300 mV* 3 V 30 V
Hz: 300 Hz 3 kHz 30 kHz
: 300 3 k 30 k 300 k 3 M 30 M
300 V
1000 V
300 kHz (Hz(U))
Note
or
Man
Auto
As a result of TRMS measurement, the multimeter dis-
plays a residual value of 1 to 10/35 digits with short-cir-
cuited measurement cables as the zero point for V AC /
I AC or V (AC+DC) / I (AC+DC) measurements (non-lin-
earity of the TRMS converter). This has no influence on
specified accuracy above 1% of the measuring range (or
3% in the mV, V (AC+DC) ranges).
A: 300
: 0.3 A
F: 30 nF
A
3 A
300 nF
3 mA
30 A
30 mA
300 A
300 mA
1 A
A
3
F
30
F
300
F
RISO: 300 k 3 M 30 M 300 M 3000 M
Man /
Auto
Return to automatic measuring range selection
*
Only via manual range selection for V AC
Setting the Reference Value
The multimeter is held in the selected measuring range. If the
range limit is exceeded, “OL” appears at the display. You should
then switch to the next higher measuring range with the help of
the scroll key.
➭
Connect the measuring cables to the instrument and measure
a reference value (max. 50% of the measuring range).
➭
Briefly press the Zero softkey.
The instrument acknowledges storage of the reference value
with an acoustic signal and the “ZERO” symbol appears at the
display. The value measured at the moment the key is
pressed serves as a reference value.
7.2.3 Quick Measurements
Measurements performed using a suitable fixed measuring range
are executed more quickly than those which utilize automatic
range selection. Quick measurement is made possible with the
following two functions:
➭
The reference value can be cleared by once again pressing
the Zero softkey.
•
Manual measuring range selection, i.e. by selecting the measuring
Notes Regarding Relative Measurement
•
Relative measurement effects the digital display only.
The analog display continues to read out the original mea-
sured value.
or
priate measuring range is selected automatically after the first
measurement and the second measurement is executed more
quickly.
•
In the case of relative measurement, F or AC quantities may
also appear as negative values.
The selected measuring range remains active for the subsequent
series of measurements with these two functions.
Gossen Metrawatt GmbH
17
7.4
Display (TFT)
7.5
Measured Value Storage – Data Function
(Auto-hold/Compare)
7.4.1 Digital Display
General
Measured Value, Unit of Measure, Type of Current, Polarity
An individual measured value can be automatically “frozen” with
the DATA function (auto-hold).
The measured value with correct decimal and plus or minus sign
appears at the digital display. The selected unit of measure and
current type are displayed as well. A minus sign appears to the
left of the value during the measurement of zero-frequency quan-
tities, if the plus pole of the measured quantity is applied to the
“” input.
The Display Zeros parameter can be used to determine whether
leading zeros will appear or be suppressed at the measured value
Applications
This function is useful, for example, when contacting the measur-
ing points with the test probes requires your full attention. After
the measuring signal has been applied and the measured value
has settled in in accordance with the “condition” listed in the table
below, the measured value is frozen at the digital display and an
acoustic signal is generated. The test probes can now be
removed from the measuring points and the measured value can
be read from the digital display. If the measuring signal falls below
the value specified in the table, the function is reactivated for stor-
age of the next value.
Exceeded Measuring Range
If the upper range limit of 1000 digits is exceeded, “OL” (overload)
appears at the display.
Exceptions: “OL” appears at the display as of 1030.0 V in the
case of voltage measurement in the 1000 V range, as of 4.500 V
for diode testing and as of 1.100 A in the 1 A range.
The Data function can be activated in all measuring functions. This
is possible for the following functions after measurement has
been started: RISO, RLO/2L and RLO/4L.
7.4.2 Analog Display
Procedure
Apply the measured quantity to the instrument and set the mea-
suring range with the Man / Auto softkey before activating the Data
function with the Data / MinMax softkey. Man appears at the display
with a green background. After activating the Data function with
the corresponding softkey, Man is grayed out and cannot be
changed until Data / MinMax is pressed again three times for deac-
tivation. Data appears at the display with a green background. If
automatic measuring range selection was active prior to activation
of the Data function, switching to manual measuring range selec-
tion is also disabled as long as the MinMax function is active.
Measured Value, Polarity
The analog display emulates the dynamic performance of a mov-
ing-coil mechanism. This display is especially advantageous for
observing measured value fluctuation, and for balancing proce-
dures.
Display as a horizontal (green) bar which indicates the momentary
measured value in real-time.
The analog scale displays a small negative range for the measure-
ment of zero-frequency quantities with positive measured values,
allowing for precise observation of measured value fluctuation
around zero. If the measured value exceeds a certain negative
range, polarity is reversed at the analog display.
Data and the associated value appear between the digital and
analog displays.
Measured Value Comparison (DATA Compare)
The analog scale displays a small positive range for the measure-
ment of zero-frequency quantities with negative measured value,
allowing for precise observation of measured value fluctuation
around zero in this case as well.
If the currently frozen value deviates from the first saved value by
less than 100 digits, the acoustic signal is generated twice. If devi-
ation is greater than 100 digits, only a brief acoustic signal is gen-
erated.
Scaling of the analog scale is automatic. This is very helpful for
manual measuring range selection.
Note
Exceeded Measuring Range
The Data function has no effect on the analog display, at
which the current measured value continues to appear.
However, when the digital display is “frozen”, the decimal
point is fixed as well (fixed measuring range, Man appears
with a gray-green background).
Exceeding the measuring range is indicated exclusively via the
digital display.
Refresh Rate
The selected measuring range cannot be manually
changed as long as the Data function is active.
The analog display is refreshed 40 times per second.
The Data function is deactivated by briefly pressing the Data / Min-
Max softkey three times, if you switch to the MinMax function,
when the measuring function is changed or when the instrument
is switched off and back on again.
V, A, Hz F, %
of measuring range
3000 digits
100%
10%
t [s]
Save
Save
Reactivated
Activated
18
Gossen Metrawatt GmbH
7.5.1 Saving Minimum and Maximum Values – “MinMax”
General
Condition
Response from Instrument
Key
Data /
MinMax
Function
Data
Display
Measuring Measuring
Function
Acous-
tic
Minimum and maximum measured values applied to the measur-
ing instrument’s input after the MinMax function has been acti-
vated can be “frozen” at the display.
Signal
Data + MV
is
displayed
Activate
short
1 x
V, A, F, Hz,
%
> 10%
MR
Applications
Save
(stabilized
measured
value)
is
displayed
1 x
The most important use of this function is the determination of
minimum and maximum values during long-term measured value
observation. The MinMax function can be activated in all measur-
ing functions. This is possible for the following functions after
measurement has been started: RISO, RLO/2L and RLO/4L.
2 x 2
0L
V, A, F, Hz,
%
< 10%
MR
Reactivate 1
stored MV
= 0L
The MinMax function has no effect on the analog display, at which
the current measured value continues to appear.
Change to
MinMax
is
cleared
short
1 x
Procedure
1 Reactivation results from falling short of specified measured value limits.
Apply the measured quantity to the instrument and set the mea-
suring range with the Man / Auto softkey before activating the Min-
Max function with the Data / MinMax softkey. Man appears at the
display with a green background. After activating the MinMax
function with the corresponding softkey, Man is grayed out and
cannot be changed until MinMax is pressed again for deactivation.
MinMax appears at the display with a green background. If auto-
matic measuring range selection was active prior to activation of
the MinMax function, switching to manual measuring range selec-
tion is also disabled as long as the MinMax function is active.
2
Two acoustic signals are generated the first time a measured value is saved as a
reference value. For subsequent data hold, two acoustic signals are only generated if
the currently frozen value deviates from the first saved value by less than 100 digits.
Key: MV = measured value, MR = measuring range
Example
The voltage measuring range is set manually to 30 V.
The first measured value is 5 V and is stored to memory because
it’s greater than 10% of the measuring range (= 3 V), and is thus
reliably above the background noise level. As soon as the mea-
sured value drops to less than 10% of the measuring range, i.e.
amounts to less than 3 V which corresponds to removal of the
test probes from the measuring point, the instrument is ready to
store a new value.
Both Min and Max, as well as the associated values, are displayed
between the digital and analog displays along with the time of
their occurrence.
The MinMax function is deactivated by briefly pressing the Data /
MinMax softkey, when the measuring function is changed or when
the instrument is switched off and back on again.
Note
As opposed to the Data function, the MinMax function can
also be used for temperature measurement.
The MinMax function is reset by pressing the ESC key.
After pressing Data / MinMax once again, the minimum and maxi-
mum values are displayed together with the average value
(“Avg.”). The Min Avg Max display appears without timestamp.
Response from Instrument
Key
Function
MinMax
Min. and Max.
Measured Values
Display
Acoust
ic Sig-
nal
Data /
MinMax
Min + MV
Max + MV
Activate
and save
momentary
measured value
short
short
are saved
1 x
Storage continues in
background, new min. and
max. values are displayed.
stored min. value
stored max. value
is cleared
1 x
1 x
1 x
Save and
display
Stop
are deleted
Gossen Metrawatt GmbH
19
7.6
Measured Value Memory – STORE Function.
The following options are available for the storage of measured
values:
•
Store at the instrument by pressing the STORE key on the
instrument
•
Store at the instrument by pressing the STORE key on the
probe (METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE
BT only)
•
Store at the PC by triggering the PUSH/PRINT function in the
IZYTRONIQ report generating program
7.6.1 Remote read-out and storage via the Z270S probe
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
The probe with integrated control unit permits remote triggering at
difficult to access places, and at locations which require your full
attention. The probe can be used for all measuring functions
except for current measurement. The connector cable is shielded
against interference.
Safety Cap
START
STORE
Test Tip
Safety Collar
V
m/4
TemIL
S–
A
REC
KS17-2
➭
➭
Connect the probe’s double plug to the voltage socket (V).
Connect the KS17-2 safety measurement cable to the ground
socket.
➭
➭
Establish contact with the measuring point.
Start the respective measuring function by pressing the START
key on the probe.
➭
As soon as the measured value has settled in, it can be stored
by pressing the STORE key on the probe.
Alternatively, the measured value can be stored with the help
of the STORE key on the instrument.
The REC storage symbol appears briefly in the header in order to
visualize the storage process.
Electrical Safety
Maximum rated voltage
Measuring category
Maximum rated current
With safety cap attached
Without safety cap
300 V
600 V
CAT III
600 V
CAT IV
CAT II
1 A
1 A
16 A
—
—
—
Measurements per DIN EN 61010-031 may only be performed in
environments in accordance with measuring categories III and IV
with the safety cap attached to the control unit’s test tip.
In order to establish contact inside 4 mm sockets, the safety cap has
to be removed by prying open the snap fastener with a pointed
object (e.g. the other test probe).
7.6.2 Remote Read-Out and Storage via the PC – PUSH/PRINT
Function
The procedure for storage via the PUSH/PRINT function is
described in the online help included with IZYTRONIQ report gen-
erating software.
20
Gossen Metrawatt GmbH
The general procedure is described here first, and the following
subsections explain the respective parameters and their configu-
ration in detail.
7.7
Measurement Data Recording
➭
Activate recurrent recording:
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Recording Type parameter with the help of the
scroll keys.
➭
➭
➭
Acknowledge the selected parameter by pressing the OK
key.
The multimeter offers the option of saving measurement data
once by pressing a button or repeatedly as a measurement series
over longer periods of time.
Select the Periodic parameter with the help of the
scroll keys.
Data are stored to a battery-backed memory module, and are
retained even after the multimeter is switched off. The system
acquires measured values relative to real-time.
Acknowledge your change with the OK key. The entry cur-
sor once again marks the entire parameter line.
➭
Set the sampling rate for memory mode operation (see
page 22).
Note
Measurement data recording is ended automatically as
soon as internal memory is full.
No measurement data are overwritten. Memory has to be
cleared in order to record further measurement data (see
page 23).
➭
➭
Select an hysteresis in order to assure efficient use of memory
➭
➭
Create a group if necessary in order to store the measured
Stored measurement data can be read out via Bluetooth . See
➭
➭
data to IZYTRONIQ software.
Before starting lengthy measured value recordings, check the
➭
Start recording.
7.7.1 One-Time Only (manual) Storage
➭
➭
➭
➭
➭
Press the MENU key.
The STORE key is used for on-time only storage of a data value.
Recording type must be set to “Data Value”.
Press the General Setup softkey.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Recording Start parameter with the scroll
keys.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
➭
Acknowledge the selected parameter by pressing the OK
key.
Select the Recording Type parameter with the help of the
scroll keys.
The “Start” setting changes to “Stop”.
The following message appears: “Recording has started.”
At the same time, “REC” appears in red to the left of the
battery level display.
➭
➭
Acknowledge the selected parameter by pressing the OK key.
Select the Data Value parameter with the help of the scroll
keys.
➭
The display is returned to the measuring function by
pressing the ESC key three times.
➭
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
➭
Select the desired measuring function and an appropriate
measuring range.
> General Setup Memory Recording Type
Data Value
MENU
➭
➭
Perform the measurement.
Stop recording:
OK
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
3x
ESC
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
7.7.2 Measurement Series (automatic storage)
Select the Recording Stop parameter with the scroll
keys.
Recording type must first be set to “Periodic” for measurement
series, and several basic parameters have to be set, for example
the sampling rate.
➭
Acknowledge the selected parameter by pressing the OK
key.
The following message appears: “Recording has
stopped”. The red “REC” symbol is cleared from the dis-
play.
Note
Consider available memory space when selecting your
➭
The display is returned to the measuring function by
pressing the ESC key three times.
Afterwards, you can start memory mode operation and then the
measuring function at any time.
Gossen Metrawatt GmbH
21
➭
Memory mode operation can also be exited by switching
the multimeter off.
This parameter cannot be set during memory mode operation.
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Setting the Sampling Rate
This parameter cannot be set during memory mode operation.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
➭
➭
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Hysteresis parameter with the help of the scroll
keys.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Rate parameter with the scroll keys.
Acknowledge the selected parameter by pressing the OK key.
➭
➭
Acknowledge the selected parameter by pressing the OK key.
If the parameter is set to off, activate hysteresis by a pressing
the scroll key.
➭
➭
Then select the desired entry position within the parameter
using the scroll keys and change the respective value
(00000 digits) with the scroll keys.
Change the respective value using the scroll keys
[h:mm:ss] or [mm:ss:s/10].
➭
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
> General Setup Memory Rate [h:mm:ss] /
Value
MENU
> General Setup Memory Hysteresis
MENU
OK
OK
➭
Hysteresis is deactivated again by selecting the first digit or
the leading zero of the displayed hysteresis value, pressing the
scroll key and acknowledging with OK.
Adjusting Recording Time
Recording time can be set to Unlimited or to a value within a range
of 0:00:00 to 90:00:00.
This parameter cannot be set during memory mode operation.
Trigger Mode Operation
➭
➭
➭
➭
➭
➭
➭
Press the MENU key.
The Off, Outside Limits and Inside Limits settings
can be used to specify how measured value recording is started
and stopped:
Press the General Setup softkey.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Record Time parameter with the scroll keys.
Acknowledge the selected parameter by pressing the OK key.
• Trigger = Off: Storage is started with Recording > Start and ended
with Recording > Stop.
• Trigger = Outside Limits: Recording is started as soon as a mea-
sured value occurs which is outside of the selected measuring
limits, and is stopped as soon as this is no longer the case, or
after selected Record Time is exceeded.
Change the respective value using the scroll keys
[h:mm:ss].
• Trigger = Inside Limits: Recording is started as soon as a mea-
sured value occurs which is within a specified band, and is
stopped as soon as this is no longer the case, or after maxi-
mum Record Time has elapsed.
➭
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
> General Setup Memory Record Time
[h:mm:ss]
MENU
The band is specified with the help of the lower trigger limit (Trigger
Low Limit) and the upper trigger limit (Trigger High Limit). The limits
are entered in digits and are defined by the upper range limit. In
the case of DC, for example, this is 30.000 (–30.000 to +30.000).
OK
For measuring functions with a minimal measuring-range span,
for example RLO or m/4 with 3000 digits, setting the trigger
threshold above this measuring range limit does not make sense.
It’s thus advisable to perform measurement with a fixed measur-
ing range.
Setting Hysteresis
The hysteresis setting allows for efficient use of memory space.
During memory mode operation, new measured data are only
saved if they deviate from the previously stored value by an
amount which exceeds the selected hysteresis value.
Actual measurement is always executed using the selected sam-
Hysteresis can be selected in steps from 1 to 10,000 digits. These pling rate.
digits are related to the measuring range as follows: the position
of the selected digit in the specified hysteresis value corresponds
Note
to the same position within the measuring range, although count-
ing is started at the left.
Measurements performed close to the trigger level may
result in an incorrect display. If this is the case, select a
smaller voltage measuring range. In the case of mea-
sured values which are much higher than the expected
results, the input signal may be distorted. Perform mea-
surement with activated 1 kHz low-pass filter in this case.
Example: A specified hysteresis of 00100 for the 300.00 V mea-
suring range means that only those measured values which devi-
ate from the last measured value by more than 001.00 V are
saved to memory.
Note
Due to the fact that the value is specified in digits (highest
place all the way to the left), and thus depends on the
measuring range, it’s advisable to use the function with a
fixed measuring range only.
22
Gossen Metrawatt GmbH
Activating the Trigger
Selecting a Group
The trigger function cannot be set during memory mode opera-
tion.
Before starting the respective measurement, select a suitable
group from the list you’ve created to which the measured values
will be saved.
➭
➭
➭
➭
➭
➭
➭
Press the MENU key.
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Press the General Setup softkey.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Trigger parameter with the scroll keys.
Acknowledge the selected parameter by pressing the OK key.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Groups parameter with the help of the scroll
keys.
Select the respective function (within, outside or off) with the
help of the scroll keys.
➭
➭
➭
Acknowledge the selected parameter by pressing the OK key.
Select the desired group with the scroll keys.
Acknowledge your selection with the Select softkey.
➭
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
> General Setup Memory Trigger
> General Setup Memory Groups
MENU
MENU
Select
OK
7.7.3 Memory
Adjusting the Trigger Threshold
Memory space in the instrument is limited to 300,000 measured
values. You can check memory occupancy and clear memory if
necessary.
These parameters cannot be set during memory mode operation.
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Querying Memory Occupancy
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
You can query memory occupancy from within the “Info” menu
before, as well as during the save operation.
Select the Trigger Low Limit or Trigger High Limit parameter with
the help of the scroll keys.
Memory occupancy range: 000.1% ... 099.9%.
➭
➭
Acknowledge the selected parameter by pressing the OK key.
> General Setup Info > Memory Occupancy x.x%
MENU
Select the desired entry position within the parameter using
the scroll keys and change the respective value with the
scroll keys.
Clearing Memory (deleting measured values)
This function deletes all measured values from memory!
➭
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
This function cannot be executed during memory mode opera-
tion.
> General Setup Memory Trigger Low Limit
+00000 digits / Trigger High Limit +00000 digits
MENU
> General Setup Memory Clear Memory
MENU
The following security prompt appears before memory is cleared:
“Clear memory?”. This prompt must be acknowledged with “Yes”
via the function key (not with OK).
OK
Managing Groups
Confirmation is displayed at the end of the operation: “Memory
has been cleared.”
Groups can be created in order to be able to sort measured val-
ues when they’re saved. The groups can be managed.
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Memory menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Groups parameter with the help of the scroll
keys.
➭
➭
Acknowledge the selected parameter by pressing the OK key.
Manage the groups with the help of the New, Edit and Delete
softkeys.
> General Setup Memory Groups
MENU
Gossen Metrawatt GmbH
23
8.2
Insulation Resistance Measurement – RISO Function
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
8
Measurements
8.1
Enabling Parameter Changes
password has to be entered for each of the following measure-
ments in order to change the parameters:
Caution: High-Voltage!
Do not touch the conductive ends of the test probes when the
instrument has been activated for the measurement of insulation
resistance.
You may otherwise be exposed to a current of 2.5 mA (lim-
ited in the measuring instrument), and although this is not
life endangering, the resulting electrical shock is quite dis-
cernible.
If, on the other hand, measurement is being performed on a
capacitive device under test, for example a cable, it may be
charged with up to approximately 1200 V. Touching the
device under test after measurement has been performed is life
endangering in this case!
•
•
RISO: Changes to test voltage
m/4: Changes to test current
As soon as you attempt to change the above mentioned parame-
ters with the help of the scroll keys, the Password menu
appears. Enter the current password as described in section 6.7
!
Attention!
Insulation resistance may only be measured at voltage-
free devices!
Interference voltage detection is performed before and
during the measurement. If interference voltage Uext of
roughly 15 V AC or > 25 V DC is detected, visual and
acoustic warnings are generated. Measurement is also
disabled during pre-measurement testing. If interference
voltage is detected during measurement, automatic
switching to voltage measurement occurs and momen-
tarily measured voltage is displayed as Uext.
!
Attention!
The measurement cables may not come into contact
with each other during high-resistance insulation mea-
surements!
Note
The “RISO” or “COIL” switch position may only be used for
insulation resistance measurement and inter-turn short
circuit detection.
8.2.1 Preparing for Measurement
Short circuit the measurement cables.
00.00
Temp
Uext
!
V
Temp COIL
S+
approx.
m/4
0 V!
S–
A
> 15 V
AC
> 25 V
DC
Rx
STOP!
➭
Check the measurement cables:
Short circuit the test probes at the ends of the measurement ca-
bles before performing insulation resistance measurements with
the selector switch in the
position, in order to make sure that
In this way,
incorrect connection can be avoided and interrupted mea-
a value close to 0 is displayed at the instrument
surement cables can be detected.
24
Gossen Metrawatt GmbH
➭
Connect the measurement cables to the accessible M and
sockets, using the included probe for connection to the M
socket if possible.
RISO
➭
➭
Set the rotary switch to “RISO” or “COIL”.
RISO
Interference voltage testing (V AC+DC TRMS) is conducted in
this switch position.
COIL
!
Attention!
If interference voltage of roughly Uext < 15 V AC or
< 25 V DC is detected, visual and acoustic warnings are
generated. Measurement is disabled as well.
The above symbol
blinks when test volt-
age is active.
Func
Coil
DAR
PI
Interference Voltage Detection
RISO
COIL
Func
➭
Select the desired test voltage U between 50 and 1000 V
set
with the scroll keys.
It may be necessary to enter a password in order to change
The selected test voltage appears at the display during test-
ing.
Func
Func
Gossen Metrawatt GmbH
25
to 120% of the selected test voltage (in the case of an
interference voltage whose value is equal to that of mea-
suring voltage, the two voltages neutralize each other).
8.2.2 Performing Insulation Measurement
➭
When the device under test is voltage-free, activate the mea-
surement by pressing, or pressing and holding, the Start soft-
key on the instrument or on the probe. See below for further
information.
Manual switching to insulation resistance measurement is dis-
abled for as long as voltage is applied to the test terminals.
➭
Don’t read the measurement results until the display has set-
tled in. The high-voltage symbol next to the battery level dis-
play blinks during measurement.
If interference voltage is no longer present, insulation measurement
can be started by pressing the Start softkey once again.
Auto-ranging is active during insulation resistance measurement.
!
Attention!
A DATA function which is matched specifically to the insulation
measurement can be activated for automatic retention of valid
If “Error” appears at the display, the cable (the device
under test) is most likely capacitively charged to a signifi-
cant extent. Remedy:
Short circuit the cable (the device under test). Repeat the
measurement.
Measurement-Specific Setting: Press and Hold the Start Key
The instrument can be configured such that measurement is acti-
vated when the Start softkey is pressed or pressed and held, and
ended when the key is released.
8.2.3 Ending the Measurement and Discharging
➭
Press the Stop softkey in order to end the measurement. If the
Press and Hold the Start Key setting has been activated, release
Either the Start softkey on the instrument or the Start key on the
Z270S probe (METRAHIT IM XTRA BT and METRAHIT IM E-
DRIVE BT only) can be pressed and held.
A warning is displayed during the discharging
procedure which isn’t cleared from the display
until applied voltage
Discharge
!
Attention!
–
Measured value storage is not possible with the Store key
on the probe if the Start key on the probe is pressed and
held to activate measurement!
If the Start key on the probe is pressed and held, press-
ing the Store key on the probe aborts measurement with-
out storing the measured value.
Uext is 0000 V.
0 V!
The instrument’s internal 1 M resistor causes
rapid discharging. Contact between the object
and the instrument must not be interrupted.
Do not disconnect the DUT until voltage has fallen below 25 V and the
warning has been cleared from the display!
Press the Store key on the instrument in order to save the
measured value.
concerning measured value storage and the Z270S
probe.
Note
Voltage measurement in the RISO or COIL switch position
is used primarily for interference voltage detection before
the respective measurement.
Use the V , V or V switch position in order to per-
form precise voltage measurements.
➭
➭
➭
➭
➭
➭
➭
Press the MENU key.
Press the Setup for present measurement softkey.
Switch to the submenu with the help of the scroll key.
Select the Hold Start Button parameter with the scroll keys.
Acknowledge the selected parameter by pressing the OK key.
Select Yes or No with the help of the scroll keys.
8.3
Inter-Turn Short Circuit Measurement – COIL Function
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE only)
In combination with METRAHIT IM XTRA BT and METRAHIT IM E-
DRIVE BT multimeters, the COIL TEST ADAPTER (COIL ADAPTER
50mH) and the COIL ADAPTER XTRA make it possible to measure
inter-turn short circuiting. The adapters are universally suitable for
numerous electric motors with various power ratings.
Acknowledge your change with the OK key. The entry cursor
once again marks the entire parameter line.
➭
The display is returned to the measuring function by pressing
the ESC key three times.
Note
The Z720S probe cannot be used when measuring inter-
turn short circuiting with an adapter.
> Setup for Present Measurement Hold Start
Button Yes/No
MENU
8.3.1 Inter-Turn Short Circuit Measurement with the COIL TEST
ADAPTER
OK
3x
ESC
In combination with the optional COIL TEST ADAPTER, inter-turn
short circuit measurements with a test voltage of 1000 V are pos-
sible within an inductance range of 10 µH to 50 mH (100 Hz). This
range corresponds to motors in accordance with DIN standards
with power ratings of roughly 15 kVA to 80 MVA.
Automatic Detection of Interference Voltage During Insulation
Measurement
If the instrument detects interference voltage of roughly > 15 V AC or
> 25 V DC (condition: U U , e.g. Riq < 100 k at 100 V, see
page 62, footnote 1), the instrument is switched automatically to
voltage measurement and the currently measured voltage value is
displayed as Uext.
A time value which depends on the inductance of the respective
coil is ascertained for each motor coil or coil combination, one
after the other, during this measurement with high-voltage. A
comparison of the time values makes it possible to check the
motor coils for symmetry, and thus to detect an inter-turn short
circuit.
ext
INS
Note
A dead zone results in erroneous measurements for
automatic interference voltage detection during insulation
measurement. The dead zone lies within a range of 80%
26
Gossen Metrawatt GmbH
8.3.1.1 Preparing for Measurement
Selecting the Type of Measurement
> Momentary Measurement Setup > Parameter
Measurement Type
MENU
RISO
Connect COIL TEST ADAPTER
and measurement cables
Coil / 1-Ph. Motor / 3-Ph. Motor
OK
OK
3 x > Measurement View
ESC
COIL
U
!
Pulse
Current
up to 600 A
is Possible!
1-Ph. Motor:
3-Ph. Motor:
Coil
AC motor (L1)
0 V!
3-Phase motor (U-V, U-W, V-W)
Motor with up to 15 coils (L1 - L15)
➭
Select polarity: unipolar or bipolar (see below).
V
W
Example
Polarity Selection
V
with Star Connection
m/4
Temp COIL
S+
> Momentary Measurement Setup > Parameter
Polarity
MENU
S–
A
M
U
COIL
TEST ADAPTER
Bipolar / Unipolar
OK
OK
L1
L2
U
Surge max
1200 V!
3 x > Measurement View
COIL
ESC
V
W
L3
Example
with Delta Connection
RISO
Note
Inter-turn short circuit measurements may only be con-
ducted on voltage-free coils.
RISO
COIL
➭
Set the rotary switch to “RISO” or “COIL”.
➭
Repeatedly press the Func softkey until the measurement view
for COIL appears at the display.
➭
Select the motor or coil type to be tested under the measure-
ment type parameter in “Setup for present measurement” (see
below).
Func
Coil
The above symbol
blinks when test volt-
age is active.
Func
DAR
Func
PI
Func
Gossen Metrawatt GmbH
27
➭
You can delete each measurement in order to repeat it by se-
lecting the desired table row for U-V, U-W or V-W with the
or scroll key and pressing the Delete softkey.
Test Voltage (U = 1000 V)
set
Test voltage for the inter-turn short circuit measurement is perma-
nently set to 1000 V and cannot be changed.
Connection and Contacting
➭
Make sure that the device under test is voltage-free.
Note
Interference voltage cannot be detected in combination
with the COIL TEST ADAPTER (COIL ADAPTER 50 mH).
➭
Connect the COIL TEST ADAPTER via the contact protected
plug of its connector cable to the two accessible sockets at
the multimeter: i.e. the red cable to the COIL socket and the
black cable to the socket.
Graphic Representation
List View
8.3.1.2 Conducting the Inter-Turn Short Circuit Measurement
➭
Contact the desired coil (e.g. U–V) in order to test for absence
of voltage.
➭
➭
Connect the two measurement cables to the sockets at the
COIL TEST ADAPTER (identified with motor symbol).
If possible, contact the inductive device under test with op-
tional alligator clips plugged onto the test probes. In the case
of 3-phase motors, for example, contact coil terminals U–V,
V–W and U–W or L1, L2 and L3, one after the other.
!
Attention!
Perform measurement with self-retaining contacting de-
vices, for example alligator clips. Poor contact may result
in sparking and if the contacting element slips off of the
device under test, the inspector is exposed to life-threat-
ening danger!
Caution: High-Voltage!
➭ Activating the Inter-Turn Short Circuit Measurement
Activate the measurement by pressing the Start softkey. The
high-voltage symbol next to the battery level display blinks
during measurement.
Do not touch the conductive ends of the test probes as long as
measurement is active and the Stop softkey is displayed.
A voltage of up to 1200 V is present at the multimeter’s two
enabled output sockets, and as a pulsed voltage at the two
output sockets of the COIL TEST ADAPTER (identified with
➭
Measurement is stable as soon as a bar graph appears along
with the associated time value specified in microseconds to the
right of the bar graph and deviation to the previous measure-
ment is displayed as a percentage for the respective coil L.
motor symbol)
.
Multimeter: You may otherwise be exposed to a current of
2.5 mA (limited in the measuring instrument), and although
this is not life endangering, the resulting electrical shock is
quite discernible.
COIL TEST ADAPTER: Power pulse currents of up to 600 A
can flow from the output sockets.
➭ Measurement is ended automatically. The measurement can
be aborted by pressing the Stop softkey.*
➭ Before removing the contacting element, allows the coil to dis-
The device under test can become charged: after each measure-
ment, wait until voltage at the device under test has been
discharged (i.e. until the “Discharging ...” message is cleared
from the display). Touching the device under test may oth-
erwise be life endangering!
➭ Measurement for motors with three or more coils: Connect the
next coil (e.g. V–W) and repeat the measurement procedure
described above. The next coil is automatically incremented in
the measurement display and activated.
Automatic Evaluation of Measurement Results
Caution: High-Voltage!
In the case of inter-turn short circuit measurements at
transformers, very dangerous high-voltage may occur at the
output side depending on the transformation ratio.
Automatic evaluation of measurement results begins when the
second measurement is started. The respective measurement
view (graph or list view) shows maximum deviation to the previous
measurement as a percentage. This permits direct comparison of
the first and all subsequent measurements. Due to the fact that
the third measurement is then compared with the results of both
previous measurements, you automatically get a final comparison
of all measurements.
Measured Value Displays
Graphic
Graphic representation is used as a standard feature for the mea-
surement view. If the instrument is in the list view, you can switch
to the graphic display by pressing the Graphic softkey.
The list view permits a final comparison of all measured motor
coils (star or delta connection).
Horizontal axis:
Vertical axis:
Coil U-V, U-W or V-W
Time value in µs
Permissible asymmetry depends on motor type:
A motor with squirrel-cage rotor demonstrates only minimal
asymmetry (typically 1%). If deviation is greater than 10%, the de-
vice under test is faulty (e.g. inter-turn short circuit).
The currently measured time value for the coil selected with the
scroll key is digitally displayed in microseconds to the right of the
bar graph. As of the second measurement, deviation from the
smallest to the largest measured time value is additionally dis-
played as a percentage.
If any of the time values is 0, there’s a short-circuit. If no discharg-
ing takes place, the measured coil is interrupted (display: OL).
➭
You can delete each measurement in order to repeat it by se-
lecting the desired axis position for U-V, U-W or V-W with the
or scroll key and pressing the Delete softkey.
In order to start a new measurement series, you can:
- Delete the respectively recorded measurement for each coil
as described under “Measured Value Displays”, or
- Reselect the COIL measuring function with the help of the Func
softkey (or by turning the rotary switch)
List
You can switch to the list view anytime by pressing the List soft-
key. In this case, deviation from the previous time values, as well
as date and time of the measurement, are listed along with the
respective time values. The final comparison of all measurements
appears in the table’s header in terms of deviation as a percent-
age.
- Start a new measurement series by pressing the Restart soft-
key**
*
As of firmware version 1.003.000 – in the case of older firmware versions, end
measurement by pressing the Stop softkey.
28
Gossen Metrawatt GmbH
In the case of permanent-field motors, inter-turn short circuit
measurement is dependent on rotor position. This also applies to
squirrel cage motors with large inductances which result in more
frequently occurring remanence. In this case, the bipolar setting
must be selected for the inter-turn short circuit measurement.
First of all, measurement must be performed at each coil with
positive polarity. Afterwards, each coil is measured once again
with reversed polarity. The connections between the COIL
Adapter’s terminals and the motor coil are reversed to this end.
The instrument generates a mean value based on both measure-
ment results which, to a great extent, is independent of rotor posi-
tion.
8.3.1.3 Ending the Measurement and Discharging
➭ Measurement is ended automatically. The measurement can
be aborted by pressing the Stop softkey.*
After measurement has been ended, any remain-
ing residual voltage (Uext) is displayed (message:
“Discharging ... “), which may result from cable ca-
Discharge
–
pacitance. The instrument’s internal 1 M resis-
tor causes rapid discharging.
0 V!
Contact to the motor coils must be retained to this end.
Do not disconnect the DUT until voltage has fallen
below 25 V, i.e. until after the “Discharging ...” message has been cleared
from the display.
**
As of firmware version 1.003.000.
*
As of firmware version 1.003.000 – in the case of older firmware versions, end
measurement by pressing the Stop softkey.
Gossen Metrawatt GmbH
29
8.3.2 Inter-Turn Short Circuit Measurement with the ADAPTER
XTRA*
In combination with the optional COIL ADAPTER XTRA, inter-turn
short circuit measurements with a test voltage of 1000 V are pos-
sible within an inductance range of 10 µH to 5 H (100 Hz).
Switch set to High: 5 mH to 5 H
Low: 10 µH to 50 mH
This range corresponds to motors in accordance with DIN stan-
dards with power ratings of roughly 0.16 kVA to 80 MVA.
Switch set to High: from roughly 0.16 kVA to 160 kVA
Low: from roughly 15 kVA to 80 MVA
A time value which depends on the inductance of the respective
coil is ascertained for each motor coil or coil combination, one after
the other, during this measurement with high-voltage. A compari-
son of the time values makes it possible to check the motor coils
for symmetry, and thus to detect an inter-turn short circuit.
8.3.2.1 Preparing for Measurement
Connect COIL ADAPTER XTRA
and measurement cables
RISO
Example
with Star Connection
COIL
U
Pulse currents up to
600 A are possible!
!
0 V!
V
W
U
V
W
V
m/4
Temp COIL
S+
S–
A
U
L1
L2
0
V-W V-U
U-W W-U
U-V W-V
U
Surge max
1200 V!
V
W
L3
Example
High
Low
with Delta Connection
COIL ADAPTER XTRA
COIL /
Note
Inter-turn short circuit measurements may only be con-
ducted on voltage-free coils.
➭
Set the rotary switch to “RISO” or “COIL”.
➭
Repeatedly press the Func softkey until the measurement view
for COIL appears at the display.
Note
After connecting the COIL ADAPTER XTRA to the multi-
meter, manual selection of measurement type and polar-
ity is unnecessary (see “Connection and Contacting” on
page 31). Measurement type is automatically set to 3-
phase motor measurement and polarity is automatically
set to bipolar after connection.
➭
You can view the automatically selected measurement type
and polarity mode under “Setup for present measurement”.
*
as of firmware version 1.003.000
30
Gossen Metrawatt GmbH
Viewing the Automatically Selected Measurement Type and
Polarity Mode
Connection and Contacting
➭
Make sure that the device under test is voltage-free.
> Setup for present measurement >
Parameters
MENU
Note
In combination with the COIL ADAPTER XTRA, interfer-
ence voltage can only be detected under certain condi-
tions.
Measurement type:
3-phase motor (U, V, W)
Bipolar
Polarity mode:
➭
➭
Connect the COIL ADAPTER XTRA to the S+ and sockets at
the multimeter via the contact protected plug.
Press
twice > Measurement view
ESC
Connect the three measurement cables to the sockets la-
beled U, V and W at the COIL ADAPTER XTRA. In doing so,
make sure that the color coding included on the measurement
cables and the sockets matches up.
RISO
➭
If possible, contact the inductive device under test with op-
tional alligator clips plugged onto the test probes. Simultane-
ously contact coil terminals U, V and W, or L1, L2 and L3.
RISO
COIL
Caution: High-Voltage!
Do not touch the conductive ends of the test probes as long as
measurement is active and the Stop softkey is displayed.
A voltage of up to 1200 V is present at the multimeter’s two
enabled output sockets, and as a pulsed voltage at the output
sockets of the COIL ADAPTER XTRA (identified with U, V, W).
Multimeter: You may otherwise be exposed to a current of
2.5 mA (limited in the measuring instrument), and although
this is not life endangering, the resulting electrical shock is
quite discernible.
Func
Coil
DAR
PI
COIL ADAPTER XTRA: Power pulse currents of up to 600 A
can flow from the output sockets.
The above symbol
blinks when test volt-
age is active.
The device under test can become charged: wait until voltage at
the device under test has been discharged after each mea-
surement. The rotary switch may not be turned in order to
start the next measurement until after the “Select next
switch position at COIL Adapter” prompt appears, which is
displayed subsequent to the “Discharging – please wait”
message. Touching the device under test may otherwise be
life endangering!
Func
Caution: High-Voltage!
In the case of inter-turn short circuit measurements at
transformers, very dangerous high-voltage may occur at the
output side depending on the transformation ratio.
Func
Caution: High-Voltage!
For safety reasons, all three motor terminals must always be
connected to the adapter when measurements are con-
ducted at 3-phase motors. Dangerous voltage may be
present at unconnected motor terminals.
Selecting the Inductance Range
Note
The High or Low inductance range is selected with the
rocker switch at the COIL ADAPTER XTRA:
Func
High: 5 mH to 5 H
Low: 10 µH to 50 mH
(0.16 kVA to 160 kVA)
(15 kVA to 80 MVA)
Test Voltage (U = 1000 V)
set
Test voltage for the inter-turn short circuit measurement is perma-
nently set to 1000 V and cannot be changed.
Gossen Metrawatt GmbH
31
➭ Activating the Inter-Turn Short Circuit Measurement
Activate the measurement by pressing the Start softkey. The
high-voltage symbol next to the battery level display blinks
during measurement.
Measured Value Display
Graphic
Graphic representation is used as a standard feature for the mea-
surement view. If the instrument is in the list view, you can switch
to the graphic display by pressing the Graphic softkey.
➭
Measurement is stable as soon as a bar graph appears
in the graphic representation along with the associated time
value specified in microseconds to the right of the bar graph
and deviation to the previous measurement is displayed as a
percentage, or
Horizontal axis:
Vertical axis:
Coil U-V, U-W, V-W
Time value in µs
The currently measured time value for the coil selected at the mul-
timeter is digitally displayed in microseconds to the right of the bar
graph. As of the second measurement, deviation from the small-
est to the largest measured time value is additionally displayed as
a percentage.
the time value and the deviations to the previous measure-
ments are indicated in the respective line in the list view:
U-V, U-W, V-W: green bar in graphic view,
time value for +COIL in list view
➭
Each individual measurement (bar) can be deleted from the
graphic in order to repeat it by first of all selecting the desired
coil (U-V, U-W, V-W, V-U etc.) with the adapter’s rotary switch,
and then pressing the Delete softkey.
V-U, W-U, W-V: orange bar in graphic view,
time value for -COIL in list view
➭
After measurement has been completed, wait until voltage at
the device under test has been discharged. The next mea-
surement may not be started until after the “Select next switch
position at COIL Adapter” prompt appears, which is displayed
subsequent to the “Discharging – please wait” message.
List
You can switch to the list view at any time by pressing the List
softkey. In this case, deviation from the previous time values, as
well as date and time of the measurement, are listed along with
the respective time values. The final comparison of all measure-
ments appears in the table’s header.
!
Attention!
Turning the rotary switch or throwing the rocker switch
during a running measurement can damage or destroy
the COIL ADAPTER XTRA.
The first line (no. 1) shows the target values for coil U-V/V-U, the
second line (no. 2) for coil U-W/W-U and the third line (no. 3) for
coil V-W/W-V.
➭
You can delete the respective measured value pair (for positive
and negative polarity) from the list in order to repeat the mea-
surement by first of all selecting the corresponding coil,
namely U-V and V-W, U-W and W-U or
➭
➭
Repeat the above described measuring procedure by setting
the rotary switch to the corresponding position.
The multimeter detects the selected position and automati-
cally performs the measurement. If measurement is stable,
the next measurement results are displayed.
V-W and W-V, and then pressing the Delete softkey.
➭
Complete the procedure by conducting measurements, one
after the other, for all of the coils or rotary switch positions as
described above.
Automatic Evaluation of Measurement Results
Automatic evaluation of measurement results begins when the
second measurement is started. The respective measurement
view (graphic or list view) shows maximum deviation from the pre-
vious measurement as a percentage. This permits direct compar-
ison of the first and all subsequent measurements. Due to the fact
that the third measurement is then compared with the results of
both previous measurements, you automatically get a final com-
parison of all three measurements.
Graphic Representation
List View
8.3.2.2 Conducting the Inter-Turn Short Circuit Measurement
➭
Select the desired inductance range (High or Low) with the
help of the rocker switch on the adapter (see “Selecting the
The list view permits a final comparison of all measured motor
coils (star or delta connection).
➭
➭
Set the adapter’s rotary switch to the desired coil. For exam-
ple, start with the first switch setting: U-V.
Permissible asymmetry depends on motor type:
Contact winding terminals U, V and W or L1, L2 and L3.
A motor with squirrel-cage rotor demonstrates only minimal
asymmetry (typically 1%). If deviation is greater than 10%, the de-
vice under test is faulty (e.g. inter-turn short circuit).
!
Attention!
If any of the time values is 0, there’s a short-circuit. If no discharg-
ing takes place, the measured coil is interrupted (display: OL).
Perform measurement with self-retaining contacting de-
vices, for example alligator clips. Poor contact may result
in sparking and if the contacting element slips off of the
device under test, the inspector is exposed to life-threat-
ening danger!
In the case of permanent-field motors, inter-turn short circuit
measurement is dependent on rotor position. This also applies to
squirrel cage motors with large inductances which result in more
frequently occurring remanence. First of all, measurement must
be performed at each coil with positive polarity (U-V, U-W, V-W).
Afterwards, each coil is measured once again with reversed po-
larity (V-U, W-U, W-V). The rotary switch on the COIL ADAPTER
XTRA must be set to the respective position to this end. As a re-
sult, there’s no need to reconnect the terminals at the COIL
Adapter to the motor coil. The instrument generates a mean value
based on both measurement results which, to a great extent, is
independent of rotor position.
32
Gossen Metrawatt GmbH
8.3.2.3 Starting a New Measurement Series / Measuring Routine
In order to start a new measurement series, you can:
–
–
–
Delete the respectively recorded measurement for each coil
as described under “Measured Value Displays”, or
Reselect the COIL measuring function with the help of the Func
softkey (or by turning the rotary switch)
Start a new measurement series by pressing the Restart soft-
key
8.3.2.4 Stopping/Ending Measurement and Discharging
You can stop an active measurement (of a coil) at any time, as
long as the measurement results have not yet been displayed.
➭ Press the Stop softkey.
After measurement has been ended, any remain-
ing residual voltage (Uext) is displayed (message:
Discharge
“Discharging – please wait”), which may result
from cable capacitance. The instrument’s internal
–
1 M resistor causes rapid discharging.
Contact to the motor coils must be retained to this end.
0 V!
Do not disconnect the DUT until voltage has fallen
below 25 V, i.e. until after the “Discharging – please wait” message has
been cleared from the display.
➭ Press the Start softkey in order to restart the measurement.
8.3.2.5 Interrupting the Measurement Series / Measuring Routine
➭
The measurement series can be interrupted by setting the ro-
tary switch to the “0” position.
➭
In order to resume the measurement series, set the rotary
switch to the desired coil (e.g. V-W) and press the Start soft-
key once again.
8.3.2.6 Saving the Measurement Series
The values obtained during the measurement series can be saved
to the instrument’s internal memory by pressing the STORE key
after the measurement series has been completed.
Gossen Metrawatt GmbH
33
8.4
Absorption Index Measurement – DAR
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
RISO
The absorption index test is part of the polarization index test (PI).
Insulation resistance measurements are placed in relationship to
one another after 30 and 60 seconds.
Application: faster version of the polarization index test.
RISO
COIL
➭
➭
Set the rotary switch to “RISO”.
Repeatedly press the Func softkey until the measurement view
for DAR appears at the display.
➭
➭
➭
Contact the device under test with alligator clips which have
been plugged onto the test probes.
Interference voltage measurement (V AC+DC TRMS) is con-
ducted in this switch position.
Measurement may only be started when the device under test
is voltage-free (U = 0000 V).
Func
Func
Func
Func
Coil
DAR
PI
ext
➭ Activate the measurement by pressing the Start softkey. The
high-voltage symbol next to the battery level display blinks
during measurement.
➭ You can interrupt the measurement at any time by pressing the
Stop softkey.
The measurement is recorded and you can observe its progress
which is displayed as a curve over the time axis.
Results for R are displayed after reaching the 30 s mark. Mea-
30
surement is stopped automatically and results for R and DAR are
60
displayed after reaching the 60 s mark.
The above symbol
The following measured values are displayed digitally next to the
graphic representation:
blinks when test volt-
age is active.
DAR
Riso
Absorption index after 60 s
Momentary measured value in M/G
Momentary measuring voltage (actual
value)
U
ext
U
Test voltage (target value)
set
t
Measured time since beginning of mea-
surement
act
R
Measured value after 30 s in M/G
Measured value after 60 s in M/G
30
R
60
After measurement has been completed, any
remaining residual voltage U is displayed which
Discharge
ext
may result from cable capacitance and a capaci-
tive device under test. The instrument’s internal
1 M resistor causes rapid discharging.
Contact to the insulation resistance must be retained to
this end.
–
0 V!
34
Gossen Metrawatt GmbH
After measurement has been completed, any
remaining residual voltage U is displayed which
8.5
Polarization Index Measurement – PI
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
Discharge
ext
may result from cable capacitance and a capaci-
tive device under test. The instrument’s internal
1 M resistor causes rapid discharging.
Contact to the insulation resistance must be retained to
this end.
Polarization index testing is recommended for electric machines.
This procedure involves expanded testing of insulation resistance
–
0 V!
R
ISO
insulation for a duration of 10 minutes. The measured R
. DC measuring voltage from the multimeter is applied to the
value
ISO
is documented after one minute, and after ten minutes. If the insu-
lation is good, the value measured after ten minutes is higher than
the value measured after one minute. The relationship between
the two measured values is the polarization index. Charged mate-
rial within the insulation is aligned due to the application of mea-
suring voltage over a long period of time, resulting in polarization.
The polarization index indicates whether or not the charged mate-
rial contained in the insulation can still be moved, i.e. whether or
not polarization is possible at all. This, in turn, is an indication of
the condition of the insulation.
RISO
RISO
COIL
The following rules apply in general:
PI values < 1:
Troubleshooting is required.
PI values = 1 2 Maintenance is recommended
PI values = 2 4 DUT is OK,
no immediate action is required
Preventive maintenance can be planned
according to workload.
Func
Coil
PI values > 4
DUT in flawless condition
Applications: Determination of moisture and contamination levels
The following applies to the insulation of electric drive units:
Intact insulation PI 2
Very good insulation PI > 4
➭
➭
Set the rotary switch to “RISO”.
Func
DAR
Repeatedly press the Func softkey until the PI measurement
view appears at the display.
➭
➭
➭
➭
Contact the device under test with alligator clips which have
been plugged onto the test probes.
Interference voltage measurement (V AC+DC TRMS) is con-
ducted in this switch position.
Measurement may only be started when the device under test
is voltage-free (U = 0000 V).
ext
Func
PI
Activate the measurement by pressing the Start softkey. The
high-voltage symbol next to the battery level display blinks
during measurement.
➭
You can interrupt the measurement at any time by pressing
the Stop softkey.
The above symbol
blinks when test volt-
age is active.
The measurement is recorded and you can observe its progress
which is displayed as a curve over the time axis.
Results for R are displayed after reaching the 60 s mark. Mea-
60
Func
surement is stopped automatically and results for R
displayed after reaching the 600 s mark.
and PI are
600
The following measured values are displayed digitally next to the
graphic representation:
Error, “OL“ (overload)
During polarization index testing, insulation resistance R
is
ISO
PI
Polarization index after 600 s
measured after one and after ten minutes, and the second value
must be higher (see beginning of chapter). “OL” (overload) is dis-
Riso
Momentary measured value in M/G
Momentary measuring voltage (actual
value)
U
ext
played if the upper range limit is exceeded. In the case of R
,
ISO
the upper range limit is 31,000 digits or 3.1 G. If this value is
already exceeded at the beginning of the measurement, a PI
value cannot be determined because the second value would
have to be higher.
U
Test voltage (target value)
set
t
Measured time since beginning of mea-
surement
act
R
Measured value after 60 s in M/G
60
R
Measured value after 600 s in M/G
600
Gossen Metrawatt GmbH
35
Measure voltage without the low-pass filter first, in order
to be able to detect any dangerous voltages.
8.6
Voltage Measurement
!
Warning!
A 1 kHz / -3 dB low-pass filter can be activated if required, in
order to filter out capacitively induced high frequency pulses of
greater than 1 kHz, for example when performing measurements
at cables, i.e. undesired voltages of greater than 1 kHz can be
suppressed.
Be aware of the fact that dangerous voltage spikes are
not displayed during measurement with the low-pass fil-
ter. Measure voltage without the low-pass filter first, in
order to be able to detect any dangerous voltages.
Fil appears at the display in order to indicate that the low-pass fil-
ter is activated. The multimeter is automatically switched to man-
ual measuring range selection.
Note
Rotary selector switch position “RISO” is available for the
detection of interference voltage during insulation resis-
tance measurement. Use switch position V , V or V
in order to perform precise voltage measurements.
Specified measuring accuracy is not reached with signals of
greater than 500 Hz when the filter is active.
8.6.1 Alternating Voltage and Frequency Measurement V AC and
Hz with Selectable Low-Pass Filter
VAC
➭
In accordance with the voltage or frequency to be measured,
turn the rotary switch to V~ or Hz.
V~
➭
➭
➭
Press the MENU key.
Press the “Setup for present measurement” softkey.
Make sure that the Clip parameter is set to Off. Otherwise all
measured values are displayed in amperes, corrected by the
amount resulting from the selected transformation ratio for an
interconnected current clamp sensor.
Hz
➭
➭
➭
The display is returned to the measurement view by pressing
the ESC key twice.
Zero
Func
Func
Func
Measuring Ranges:
V: 300 mV/3 V/30 V
V: 300 V/1000 V
Hz: 300 Hz/3 kHz/
Hz: 30 kHz / 300 kHz
Hz
Repeatedly press the Func softkey until the desired measuring
function is displayed.
Connect the measurement cables as shown.
The “” connector jack should be grounded.
V AC – Voltage Measurement
Note
An intermittent acoustic signal warns the operator if the
measured value exceeds the upper range limit in the
1000 V range.
V
Duty AC
m/4
Temp COIL
S+
S–
A
Make sure that a current measuring range (“A”) has not been acti-
vated, when the multimeter is connected for voltage measurement! If
the fuse’s blowing limits are exceeded as a result of operator error,
both the operator and the instrument are in danger!
~
Max. 1000 V 3 kHz
➭
➭
➭
You can switch back and forth between voltage measurement
with and without low-pass filter.
Repeatedly press the Func softkey until unit of measure VAC or
VAC Fil appears at the display.
RPM AC
Hz: 1 Hz 300 kHz
Pmax = 3 x 106 V x Hz
If necessary, conduct zero balancing by pressing the Zero key
Hz – Frequency Measurement
➭
Connect the measured quantity in the same way as for volt-
age measurement.
➭
Manually select the measuring range for the voltage ampli-
tude. When the instrument is switched to frequency measure-
ment, the previously selected voltage measuring range
remains active.
Func
VAC Fil
V~ & Filter
➭
Repeatedly press the Func softkey until unit of measure Hz ap-
pears at the display. Lowest measurable frequencies and
maximum allowable voltages are listed in section 10, “Charac-
VAC Fil – Voltage Measurement with Low-Pass Filter
!
Attention!
Zero
Func
Be aware of the fact that dangerous voltage spikes are
not displayed during this type of measurement (see also
“Voltage Comparator”).
36
Gossen Metrawatt GmbH
Voltage Comparator for Displaying Dangerous Voltage
Voltage Comparator for Displaying Dangerous Voltage
The input signal or measuring signal is checked by a voltage com- The input signal or measuring signal is checked by a voltage com-
parator for dangerous spikes, because these do not appear at the parator for dangerous spikes, because these do not appear at the
display when the low-pass filter is used.
At voltages of greater than 15 V AC or 25 V DC, a danger symbol
appears at the display:
display when the low-pass filter is used.
At voltages of greater than 15 V AC or 25 V DC, a danger symbol
appears at the display:
Note
The “Setup for present measurement” submenu cannot
be accessed for the above described measurements
because no further settings are available.
8.6.2 Duty Cycle Measurement – Duty AC
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
The pulse-period ratio can be ascertained for square-wave sig-
nals with the duty cycle measurement.
➭
➭
Set the rotary switch to V~.
Repeatedly press the Func softkey until Duty AC appears at the
display.
➭
Connect the measurement cables as you would for a voltage
measurement.
Make sure that a current measuring range (“A”) has not been acti-
vated when the multimeter is connected for frequency or duty
cycle measurement!
The ratio of pulse duration to pulse period is measured with peri-
odic square-wave signals and is displayed as a percentage.
Pulse duration (t )
E
Duty cycle (%) =
100
Pulse period (t )
P
Note
The applied frequency must remain constant during duty
cycle measurement.
8.6.3 RPM Measurement – RPM AC
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
Revolutions per minute at 2 and 4-stroke internal combustion
engines (also known as rotational frequency) are measured by
acquiring pulses. The number of measurable pulses per revolution
varies depending upon engine type (2 or 4 stroke). As a prerequisite
for this measurement, the number of measurable pulses per revolution
must first be set in the RPM settings menu (RPM
below).
0FF) (see
➭
➭
Set the rotary switch to V~.
Repeatedly press the Func softkey until RPM AC appears at the
display.
➭
➭
Select the desired engine type, i.e. 2-T or 4-T with the
scroll keys.
Connect the measurement cables as you would for a voltage
measurement. In the case of internal combustion engines, ig-
nition pulses can be acquired alternatively with a current sen-
sor (see wiring diagram).
➭
The measured value then appears in RPM, for example
“244.3 r”.
revolutions
min
pulses
revolution
60s
--------
s
------------------------------ ---------------------------
RPM =
x
Measured RPM value Revolutions Per Minute
RPM parameter Pulses per revolution
Pulses per Revolution Settings Menu
2-T
RPM measurement at 2-stroke engines:
1 pulse per revolution) or
4-T
RPM measurement at 4-stroke engines:
1 pulse per 2 revolutions)
Gossen Metrawatt GmbH
37
V~
VAC
Hz
Measuring Ranges:
Duty AC: 5.0 ... 98.0%
Func
Duty AC Measuring Ranges:
Hz
MR
Hz
tE/tP
15 Hz ... 1
kHz,
10 ... 90%
3 V
1 kHz ... 4 kHz, 10 ... 90%
15 Hz ... 1
5 ... 95%
kHz,
30 V
1 kHz ... 4 kHz, 15 ... 85%
V
m/4
Temp COIL
S+
Func
S–
A
Duty AC
Max. 1000 V 3 kHz
Func
Hz: 1 Hz 300 kHz
Pmax = 3 x 106 V x Hz
RPM AC
U
t
tE
tP
Pulse Time Quantities
Func
fP
tE
tP
pulse frequency = 1/tP
pulse duration
VAC Fil
pulse period
tP – tE interpulse period
tE/tP pulse or duty cycle
Measuring Ranges:
RPM: 30 ... 30000
Func
V
m/4
Temp COIL
S+
S–
A
I(A)
M
M
Max. 1000 V 3 kHz
V
/~
Hz: 1 Hz 300 kHz
Pmax = 3 x 106 V x Hz
38
Gossen Metrawatt GmbH
8.6.4 Direct and Pulsating Voltage Measurement, V DC and
V (AC+DC)
➭
➭
➭
➭
Set the rotary switch to V or V .
Press the MENU key.
VDC
V
Press the “Setup for present measurement” softkey.
Make sure that the Clip parameter is set to Off. Otherwise all
measured values are displayed in amperes, corrected by the
amount resulting from the selected transformation ratio for an
interconnected current clamp sensor.
V
➭
➭
➭
➭
➭
The display is returned to the measurement view by pressing
the ESC key twice.
Zero
Func
Func
Func
Repeatedly press the Func softkey until the desired measuring
function is displayed.
Measuring Ranges:
300 mV/3 V/30 V
300 V/1000 V
V AC/DC
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
Connect the measurement cables as shown.
The “” connector jack should be grounded.
V
m/4
Temp COIL
S+
Measurement is started immediately.
S–
A
Note
Zero
V (AC+DC) measurement: Due to system design, the DC
component displayed in the smallest measuring range
(300 mV) has an offset. Select the VDC function for pre-
cise measurement of the DC component.
V (AC+DC) Fil
– (+)
+ (–)
Max. 1000 V 3 kHz
Pmax = 3 x 106 V x Hz
Note
An intermittent acoustic signal warns the operator if the
measured value exceeds the upper range limit in the
1000 V range.
Make sure that a current measuring range (“A”) has not been acti-
vated, when the multimeter is connected for voltage measure-
ment! If the fuse’s blowing limits are exceeded as a result of oper-
ator error, both the operator and the instrument are in danger!
Zero
As soon as the Man / Auto key is pressed, and assuming the mea-
sured value is less than 280 mV, the multimeter is switched to the
mV measuring range.
Voltage Comparator for Displaying Dangerous Voltage
The input signal or measuring signal is checked by a voltage com-
parator for dangerous spikes, because these do not appear at the
display when the low-pass filter is used.
V (AC+DC) Fil – Measurement with Low-Pass filter
At voltages of greater than 15 V AC or 25 V DC, a danger symbol
appears at the display:
!
Attention!
Be aware of the fact that dangerous voltage spikes are
not displayed during this type of measurement (see also
“Voltage Comparator”).
We recommend measuring voltage without the low-pass
filter first, in order to be able to detect any dangerous
voltages.
Improving Accuracy by means of Zero Balancing – Zero
The currently measured voltage value can be subtracted from
future measurements in all voltage measuring ranges.
➭ Press the Zero softkey.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation is imple-
mented for future measurements. This value remains in mem-
ory even after the instrument has been switched off.
A 1 kHz / -3 dB low-pass filter can be activated if required, in
order to filter out capacitively induced high frequency pulses of
greater than 1 kHz, for example when performing measurements
at cables, i.e. undesired voltages of greater than 1 kHz can be
suppressed.
➭ The value for Zero is retained when the instrument is switched
to a different measuring function. The correction or offset value
is deleted by pressing Zero once again, or when the instrument
is switched off. The value is cleared from the display.
Fil appears at the display in order to indicate the respectively acti-
vated low-pass filter. The multimeter is automatically switched to
manual measuring range selection.
Specified measuring accuracy is not reached with signals of
greater than 500 Hz when the filter is active.
Gossen Metrawatt GmbH
39
8.7
Resistance Measurement “”
➭
Disconnect supply power from the electrical circuit of the de-
vice to be measured, and discharge all high-voltage capaci-
tors.
➭
Make sure that the device under test is voltage-free. Interfer-
ence voltages distort measurement results!
voltage with the help of the direct voltage measurement.
➭
➭
Set the rotary switch to “”.
Repeatedly press the Func softkey until the “” measuring
function is displayed.
Temp
Zero
➭
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
Func
F
➭
➭
Connect the device under test as shown.
Measurement is started immediately.
Measuring Ranges:
300 /3 k/30 k
300 k/3 M/30 M
Note
Use short or shielded measurement cables in the case of
high-impedance resistance.
Func
Improving Accuracy by means of Zero Balancing – Zero
Cable resistance and contact resistance can be eliminated in all
measuring ranges by means of zero balancing.
Temp RTD
➭ Short circuit the measurement cables to this end.
➭ Press the Zero softkey.
➭ Insofar as the value for Zero is less than a permissible threshold
of 0 to 50% of the measuring range, the Zero softkey is no lon-
ger grayed out in the display and the Zero function can be acti-
vated by pressing the Zero key.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation of cable resis-
tance is activated for all subsequent measurements.
Func
TEMP TC
➭ The value for Zero is retained when the instrument is switched
to a different measuring function. The correction or offset value
is deleted by pressing Zero once again, or when the instrument
is switched off. The value is cleared from the display.
Note
The “Setup for present measurement” submenu cannot
be accessed for the resistance measurement because no
further settings are available.
Func
V
m/4
Temp COIL
S+
S–
A
!
0 V!
Rx
Rx
40
Gossen Metrawatt GmbH
8.8
Capacitance Measurement F
➭
Disconnect supply power from the electrical circuit of the de-
vice to be measured and discharge all high-voltage capaci-
tors.
➭
Make sure that the device under test is voltage-free.
Capacitors must always be discharged before measurement
is performed.
Interference voltages distort measurement results!
voltage with the help of the direct voltage measurement.
➭
➭
Set the rotary switch to “” or
.
Temp
Repeatedly press the Func softkey until the F
function is displayed.
measuring
Func
F
Measuring Ranges:
30 nF/300 nF/
➭
➭
➭
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
3 µF30 µF/300 µF
Connect the (discharged!) device under test to the sockets
with the measurement cables as shown.
Measurement is started immediately.
Improving Accuracy by means of Zero Balancing – Zero
Cable capacitance and junction capacitance can be eliminated in
all measuring ranges by means of zero balancing.
Zero
Func
Temp RTD
➭ Open the connected measurement cables to this end.
➭ Press the Zero softkey.
➭ Insofar as the value for Zero is less than a permissible threshold
of 0 to 50% of the measuring range, the Zero softkey is no lon-
ger grayed out in the display and the Zero function can be acti-
vated by pressing the Zero key.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation of cable ca-
pacitance is activated for all subsequent measurements. This
value remains in memory even after the instrument has been
switched off.
Func
TEMP TC
➭ The value for Zero is retained when the instrument is switched
to a different measuring function. The correction or offset value
is deleted by pressing Zero once again, or when the instrument
is switched off. The value is cleared from the display.
Note
The “–” pole of polarized capacitors must be connected
to the “” jack.
Resistors and semiconductor paths connected in parallel
to the capacitor distort measurement results!
Func
!
V
Note
m/4
0 V!
Temp COIL
S+
The “Setup for present measurement” submenu cannot
be accessed for the capacitance measurement because
no further settings are available.
S–
A
–
+
–
V
m/4
Temp COIL
S+
S–
A
Gossen Metrawatt GmbH
41
8.9
Temperature Measurement with Resistance Thermome-
ters – Temp RTD
Temperature measurement is performed with a Pt100 or Pt1000
resistance thermometer (accessory, not included), which is con-
nected to the voltage input.
➭ Set the rotary switch to “” or “Temp”.
➭
➭
➭
Repeatedly press the Func softkey until the Temp RTD measur-
ing function is displayed.
Select the connected temperature sensor (see settings menu
below).
Ascertain offset resistance by pressing the R Leads softkey or,
if the value is known, enter it to the “Setup for present mea-
surement” submenu (see below). The currently selected value
for R Leads appears above the measurement display.
Temp
Func
F
➭
➭
Connect the sensor to the sockets with the measurement ca-
bles as shown.
Measurement is started immediately. The instrument displays
the measured temperature using the selected unit of measure.
Temperature Sensor Selection
Func
Temp RTD
> Setup for present measurement
(Temp Setup)
MENU
RTD
Temperature Sensor
OK
PT100 / PT1000
OK
RLeads
Func
Selecting the Unit of Measure for Temperature
TEMP TC
> Setup for present measurement
(Temp Setup)
MENU
V
Temp COIL
S+
m/4
RTD
S–
A
Temperature U/M
°C / °F
OK
OK
RTD
(°C = default setting)
Entering R Leads Offset Resistance
Func
>
Setup for present measurement
(Temp Setup)
MENU
Measuring Ranges
RTD
RTD
Pt 100 –200.0 +850.0 C
RTD
Pt 1000 –150.0 +850.0 C
R Leads
00.xx
OK
OK
➭ Enter the known resistance of the connector cables with the
scroll keys:
Select the digit to be changed with the keys, and change
the respectively selected digit with the keys. The default
value is 0.43 . Values can be selected within a range of 0 to
50 .
Ascertaining Cable Resistance – R Leads
➭ Press the RLeads softkey. The “Short circuit cable!” message
appears.
➭ Short circuit the connected measurement cables.
➭ Store the measured offset resistance value by pressing the
Save softkey. The ascertained value for R Leads appears
above the measurement display. Automatic compensation of
cable resistance is activated for all subsequent measurements.
Cable resistance remains in memory even after the instrument
has been switched off.
42
Gossen Metrawatt GmbH
8.10 Temperature Measurement with Thermocouple – Temp TC
Temperature measurement is performed with a type K thermo-
couple (accessory, not included), which is connected to the volt-
age input.
➭
➭
Set the rotary switch to “” or “Temp”.
Repeatedly press the Func softkey until the Temp TC measuring
function is displayed.
The reference temperature is measured via an internal reference
junction. It’s displayed as TINT, or it can be queried via “General
Setup” (see description below).
The “Setup for present measurement” menu can be used to
specify whether or not the internal reference junction temperature
or a manually entered temperature will be used (see below). If
“Manual” temperature is selected, TMAN appears at the display.
Temp
Func
Func
Func
Func
F
➭
Connect the sensor to the sockets with the measurement ca-
bles as shown.
➭
Measurement is started immediately. The instrument displays
the measured temperature using the selected unit of measure.
Querying the Measured Reference Temperature
> General Setup > Info > Temperature xx.x °C
Temp RTD
MENU
Note
The internal reference temperature (temperature of the
internal reference junction) is measured by a temperature
sensor inside the instrument. This may be somewhat
higher or lower than room temperature as a result of inter-
nal heat-up, or moving from warmer to colder surround-
ings or vice versa.
TEMP TC
V
Temp COIL
S+
m/4
S–
A
Selecting the Unit of Measure for Temperature
> Setup for present measurement (Temp Setup
TC
)
MENU
Temperature U/M
OK
°C / °F
OK
(°C = default setting)
TC
Measuring Range
TC
Entering a “Manual” Reference Temperature Tman
K (NiCr-Ni) –250.0 +1372.0 C
> Setup for present measurement (Temp Setup
TC
)
MENU
Tman
+xx.x °C
OK
OK
Choice Between Measured and “Manual” Reference Temperature
> Setup for present measurement (Temp Setup
TC
)
MENU
Compensation Type
Man / Int
OK
OK
Man Manually specified reference temperature
Int Internally measured reference temperature
Gossen Metrawatt GmbH
43
8.11 Continuity Test
8.12 Diode Testing
with Constant Current of 1 mA
➭
Disconnect supply power from the electrical circuit of the de-
vice to be measured and discharge all high-voltage capaci-
tors.
➭
Disconnect supply power from the electrical circuit of the de-
vice to be measured and discharge all high-voltage capaci-
tors.
➭
➭
➭
Make sure that the device under test is voltage-free. Interfer-
ence voltages distort measurement results!
➭
Make sure that the device under test is voltage-free. Interfer-
ence voltages distort measurement results!
voltage with the help of the direct voltage measurement.
Set the rotary switch to “ ”.
A loudspeaker symbol appears at the display.
➭
➭
Set the rotary switch to “ ”.
Select the desired threshold with the scroll keys (see de-
scription below).
Press the Func key.
The diode symbol appears at the display.
➭
➭
Connect the conductor path under test as shown.
Measurement is started immediately.
➭
➭
Connect the device under test as shown.
Measurement is started immediately.
Adjusting the Threshold
Forward Direction and Short-Circuit
Depending upon the selected threshold, the multimeter generates
a continuous acoustic signal in the case of continuity or short-cir- The instrument displays forward voltage in volts
cuiting, i.e. at a value of less than the selected threshold.
“OL” appears at the display in the event of an open connection.
The threshold is adjusted with the scroll keys.
(display: 4 places). As long as voltage drop does not exceed the
maximum display value of 4.5 V, several series connected com-
ponents or reference diodes with small reference voltages, as well
as Zener diodes and LEDs, can be tested.
Reverse Direction and Interruption
The measuring instrument indicates overflow “OL”.
Note
Resistors and semiconductor paths connected in parallel
to the diode distort measurement results!
Func
Measuring Range
300
R
(0.1 ... 310 )
!
0 V!
Func
Func
V
m/4
Temp COIL
S+
S–
A
Func
!
0 V!
Rx
Rx
V
m/4
Temp COIL
S+
S–
A
R < 1, 10, 20, 30, 40, 50, 60, 70, 80, 90
Forward Direction
Note
The “Setup for present measurement” submenu cannot
be accessed for the continuity test or the diode test.
OL
+
–
Measuring Range:
up to 4.500 V
Reverse Direction
44
Gossen Metrawatt GmbH
8.13 Milliohm Measurement – Rlo (2-wire measurement)
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE only)
➭
Disconnect supply power from the electrical circuit of the de-
vice to be measured and discharge all high-voltage capaci-
tors.
Rlo
!
Attention!
The device under test must be voltage-free!
If interference voltage of Uext > 2 V is detected, visual
and acoustic warnings are generated. Measurement is
disabled as well.
Measuring Ranges:
3 /30
Test Current:
/+/– 20 mA
/+/– 200 mA
of voltage with the help of the direct voltage measure-
ment.
+ –
➭
➭
➭
➭
➭
Set the rotary switch to Rlo.
Select desired test current Ip set with the scroll keys.
Select desired test current Ip set polarity: /+/–
Connect the device under test as shown.
Activate the measurement by pressing the Start softkey on the
instrument or on the included probe.
Start
➭
➭
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
V
Press the Stop softkey in order to end the measurement.
m/4
Temp COIL
S+
S–
A
Improving Accuracy by means of Zero Balancing – Zero
Cable resistance and contact resistance can be eliminated in all
measuring ranges by means of zero balancing.
➭ Short circuit the measurement cables to this end.
➭
Activate the measurement by pressing the Start softkey.
Short circuit the ends
Zero
➭ Insofar as the value for Zero is less than a permissible threshold
of 0 to 50% of the measuring range, the Zero softkey is no lon-
ger grayed out in the display and the Zero function can be acti-
vated by pressing the Zero key.
of the measurement cables.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation of cable resis-
tance is activated for all subsequent measurements. Cable re-
sistance is deleted after the measurement has been ended.
➭ The correction or offset value is deleted by pressing Zero once
again during measurement, or by ending the measurement.
The value is cleared from the display.
Stop
Note
The “Setup for present measurement” submenu cannot
be accessed for the milliohm measurement because zero
balancing and the polarity of test current IP can be
selected directly in the measurement view.
V
Temp COIL
S+
m/4
S–
A
Uext > 2 V
Blown Fuse
STOP!
!
In the event of a blown fuse, measurement is not possible and the
following display appears:
0 V!
Rx
Rx
F2
Gossen Metrawatt GmbH
45
8.14 Milliohm Measurement – m/4 (4-wire measurement)
Measurement with KCV100 Cable Reel for 4-Wire Measurement
with 200 mA
8.14.1 Compensation of Cable Resistance
The KCV100 is a 100-meter, 2-pole extension cord which permits
4-wire 200 mA measurement at large objects, for example bond-
ing tests, testing of lightning protection and wick tests at large
objects such as wind power turbine blades and lattice towers.
Electrical resistance is a dipole which can generally only be mea-
sured using two poles. This is accomplished by directing a mea-
suring current of predetermined magnitude through the device
under test and measuring the resultant voltage drop. The respec-
tive resistance value is derived from the quotient of these two val-
ues.
A Kelvin measuring device is also required, for example the KC27
Kelvin probe.
Measuring Instrument in Direct Proximity to the Inspector
The measuring instrument, including the part of the Kelvin measuring device con-
nected to it, is in direct proximity to the inspector. The cable reel, and the second part
of the Kelvin measuring device which is connected to it, are located at a distance from
the measuring site.
The two points between which voltage is measured are decisive
as regards the results of the measurement. All resistances
between these two points add to the measured resistance value.
These include contact resistance, as well as cable resistance. If a
very low resistance value needs to be measured, for example
contact resistance at a contactor with a value of only a few mil-
liohms, the points between which voltage is measured must be
moved out of the measuring instrument and positioned as closely
as possible to the device under test. For this reason, the measur-
ing instrument is equipped with separate jacks for current feed
and voltage measurement. This type of 4-pole connection is
known as connection according to Kelvin.
Example: Aircraft wings and fuselage.
V
m/4
Temp COIL
S+
S–
A
black
red
KC4 Kelvin clips and KC27 Kelvin probes (available as accesso-
ries) allow for simple, correct connection.
red
Measurement with the KC27 Kelvin Probe
black
red
red
1
black
black
Milliohm measurements at busbars, weld-
ing seems, coils with up to roughly 1 H
etc. with the KC27 Kelvin Probe
(or KC4 Kelvin clip)
Insofar as possible, tips which are not spring-
loaded should be aligned inwardly to the
device under test because they’re connected
via the red plugs labeled S+ and S– (sense).
2
red
black
46
Gossen Metrawatt GmbH
8.14.2 Thermovoltage Compensation
Measuring Instrument at Remote Location
Thermovoltages which occur as a result of material and tempera-
ture differences may distort measurement results. For this reason,
the instrument is equipped with automatic thermal voltage com-
pensation within the relevant ranges.
The cable reel and the measuring instrument connected to it (including the part of the
Kelvin measuring device connected to the measuring instrument) are located at a dis-
tance from the measuring site. Only the second part of the Kelvin measuring device
connected to the extension cord is in direct proximity to the inspector.
Example: Wind power turbine.
m
4
V
m/4
Temp COIL
S+
S–
A
black
Measuring Ranges:
3 m/30 m/300 m
3 30
red
red
Start
Test Current:
+20 mA/+200 mA/+1 A
black
Overall Measuring Range:
1
m: 0.001 m 30
TComp
!
black
red
0 V!
Rx
V
m/4
Temp COIL
S+
S–
A
Adapter
2
red
black
Measurement
cables,
KC27 or KC4
red
black
Rx
+
–
Measuring Current
Voltage Drop
Note:
If KC27 or KC4 is
used, the red plug is
always connected to
S+ or S–.
Note
If measuring current is interrupted during the 4-L-m
measurement, or if the fuse blows,
“LEADS OPEN” blinks at the display.
Gossen Metrawatt GmbH
47
8.14.3 Milliohm Measurement with 200 mA or 20 mA DC [m
8.14.4 Milliohm Measurement with 1 A Pulsating Measuring Cur-
rent (automatic thermovoltage correction at 3 … 300 m)
KC4 Kelvin clips and KC27 Kelvin probes (available as accesso-
ries) allow for simple, correct connection. The KCV100 accessory
cable reel for 4-wire measurement (100 meters) can be used for
➭
Make sure that the device under test is voltage-free (see sec-
tion 8.6.4). Interference voltages distort measurement results!
➭
➭
Set the rotary switch to “m/4”.
Connect the device under test as shown.
Resistance at the current jacks should amount to < 5 .
This measuring method is suitable for resistances with induc-
tances of up to 1 H.
KC4 Kelvin clips and KC27 Kelvin probes (available as accesso-
ries) allow for simple, correct connection.
Resistance at the current jacks should amount to < 0.5 .
➭
Make sure that the device under test is voltage-free (see sec-
tion 8.6.4). Interference voltages distort measurement results!
➭
If applicable, select the desired measuring range using the
Man / Auto key: 3 m(Ip set = +1 A), (30 mor300
(Ip set = +1 A)
➭
➭
➭
Set the rotary switch to “m/4”.
Select desired test current Ip set with the scroll keys.
➭
Connect the device under test as shown.
If applicable, select the desired measuring range using the
Man / Auto key: 30 m, 300 m, 3 (Ip set = +200 mA) or 30
(Ip set = +20 mA).
Thermovoltage is compensated automatically.
➭
➭
Activate the measurement by pressing the Start softkey.
Press the Stop softkey in order to end the measurement.
➭
Connect the device under test as shown. When using acces-
sories, refer to their respective product documentation.
The 1 A setting for test current can be password protected. If
applicable, you’ll be prompted to enter the valid password (see
➭
➭
Activate the measurement by pressing the Start softkey.
If required, activate thermovoltage correction (see description
below).
Thermovoltage Correction in the 30/300 m Range
➭
First press the Start softkey and then TComp softkey in order to
measure thermovoltage. The TComp softkey changes color
from black to green. Wait until the measured value has settled
in. This may take several seconds, depending upon inductiv-
ity. Future measurement results will be corrected based on the
previously measured thermovoltage value.
➭
Press the Stop softkey in order to end the measurement.
Thermovoltage Correction in the 30/300 m Range
➭
Connect the measurement cables and press the TComp soft-
key in order to measure thermovoltage.
Wait until the measured value has settled in. This may take
several seconds, depending upon inductivity. After the mea-
sured value has settled in, press the Save softkey. The TComp
softkey changes color from black to green. All future measure-
ment results will be corrected based upon the previously mea-
sured thermovoltage value.
Thermovoltage can also be measured during a running mea-
surement after pressing the Start softkey.
Use the same procedure as described above.
Measurements at Inductive Devices
Coils, for example in motors, choke ballasts and contactors, are
highly inductive. Changes in current at inductive devices, includ-
ing those caused by switching the milliohmmeter on and off or
changing the measuring range, result in a corresponding voltage
change. These changes may be of significant magnitude, and
may result in arcing under unfavorable conditions. The milliohm-
meter is protected against arcing by means of suitable voltage
arrestors.
48
Gossen Metrawatt GmbH
8.15 Current Measurement
!
Attention!
A
Set up the measuring circuit in a mechanically secure
fashion, and secure it against inadvertent breaks. Select
conductor cross-sections and lay out connections such
that they do not overheat.
A
A DC
Note
In the case of current greater than 1.1 A, “OL” appears at
the display.
A DC Measuring Range:
: 10 nA ... 1 A
A
5 ranges:
8.15.1 Direct and Pulsating Current Measurement, Direct Connec-
tion, – A DC and A (AC+DC)
300 A / 3 mA / 30 mA /
300 mA / 1 A
➭
First disconnect supply power from the measuring circuit or
the power consumer (1), and discharge any capacitors.
Zero
Func
➭
➭
Set the rotary switch to A (A ).
A (AC+DC)
A (AC+DC) Measuring Range:
Repeatedly press the Func softkey until the desired measuring
function is displayed.
A
:
10 nA ... 1 A
➭
➭
If necessary, conduct zero balancing by pressing the Zero
softkey (see description below).
5 ranges:
300 A / 3 mA / 30 mA /
300 mA / 1 A
Safely connect the measuring instrument (without contact re-
sistance) in series to the power consumer (2) as shown.
➭
➭
Switch supply power to the measuring circuit back on (3).
Read the display. Make a note of the measured value if the in-
strument is not being operated in the memory mode or the
transmission mode.
Zero
Func
Func
Func
AAC
➭
➭
Disconnect supply power from the measuring circuit or the
power consumer (1) once again, and discharge any capaci-
tors.
Remove the test probes from the measuring point and return
the measuring circuit to its normal condition.
Improving Accuracy by means of Zero Balancing – Zero
The momentarily measured current value can be subtracted from
future measurements in all measuring ranges.
Hz
➭ Press the Zero softkey.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation is imple-
mented for future measurements.
➭ The value for Zero is retained when the instrument is switched
to a different measuring function. The correction or offset value
is deleted by pressing Zero once again, or when the instrument
is switched off. The value is cleared from the display.
V
m/4
Temp COIL
S+
S–
A
2
1
3
Current
~
~
Rx
Rx
Gossen Metrawatt GmbH
49
8.15.2 Alternating Current and Frequency Measurement, Direct
Connection, – AAC and Hz
➭ First disconnect supply power from the measuring circuit or
the power consumer (1), and discharge any capacitors.
A
➭
➭
Set the rotary switch to A (A ).
A
Repeatedly press the Func softkey until the desired measuring
function is displayed.
A DC
➭
If necessary, conduct zero balancing for AAC by pressing the
Zero softkey (see description below).
➭ Safely connect the measuring instrument (without contact re-
sistance) in series to the power consumer as shown.
➭ Switch supply power to the measuring circuit back on (3).
➭ Read the display. Make a note of the measured value if the in-
strument is not being operated in the memory mode or the
transmission mode.
Func
➭ Disconnect supply power from the measuring circuit or the
power consumer (1) once again, and discharge any capaci-
tors.
A (AC+DC)
➭ Remove the test probes from the measuring point and return
the measuring circuit to its normal condition.
Improving Accuracy by means of Zero Balancing – Zero
The momentarily measured current value can be subtracted from
future measurements in all measuring ranges.
A AC Measuring Range:
A~: 10 nA ... 1 A
➭ Press the Zero softkey.
Func
Func
Func
5 ranges:
AAC
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation is imple-
mented for future measurements.
300 A / 3 mA / 30 mA /
300 mA / 1 A
➭ The value for Zero is retained when the instrument is switched
to a different measuring function. The correction or offset value
is deleted by pressing Zero once again, or when the instrument
is switched off. The value is cleared from the display.
Hz Measuring Range:
Hz: 0.01 ... 300 kHz,
4 ranges:
Zero
Hz
300 Hz / 3 kHz /
30 kHz / 300 kHz
V
m/4
Temp COIL
S+
S–
A
2
!
1
3
I > 1 A
Current
~
~
Rx
Rx
50
Gossen Metrawatt GmbH
8.15.3 Direct and Pulsating Current Measurement with Current
Clamp Sensor – ADC und A (AC+DC)
V
Voltage/Current Transformer Output
When a current clamp sensor is connected to the multimeter
(V input), all current displays appear with the correct value in
accordance with the selected transformation ratio. The only pre-
requisite is that the current sensor is equipped with at least one of
the below listed transformation ratios, and that the ratio has been
previously selected in the following menu (Clip Off).
A DC
V
Clip Off
➭
➭
➭
➭
Set the rotary switch to V or V .
Press the MENU key.
Measuring Ranges:
mA/A: see table
Press the “Setup for present measurement” softkey.
Set the Clip parameter to the desired transformation ratio (the
same ratio as selected at the current clamp sensor) as de-
scribed below in the current clamp settings menu, or select
the desired transformation ratio with the scroll keys.
Zero
Func
A (AC+DC)
➭
➭
➭
➭
The display is returned to the measurement view by pressing
the ESC key three times.
Repeatedly press the Func softkey until the desired measuring
function is displayed.
Measuring Ranges:
mA/A: see table
Connect the current clamp sensor’s measurement cables as
shown.
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
Zero
Func
Current Clamp Setup Menu
Setup for present measurement Clip
>
MENU
V
m/4
Temp COIL
S+
Off / 1:1 / 1:10 / 1:100 / 1:1000
OK
OK
S–
A
3 x > Measurement View
ESC
R
i
Transformation Ratio
Measuring Ranges
Clamp Type
Ri ~ 9 M
300 mV
3 V
1:1 1m V/1 mA
300.0 mA
3.000 A
3.000 A
30.00 A
1:10 1m V/10 mA
CP30
CP330/1100/
1800
1:100 1m V/100 mA
30.00 A
300.0 A
300.0 A
~
CP330/1100/
1800
Current
1:1000 1 mV/1 A
3,000 kA
Rx
The maximum allowable operating voltage is equal to the nominal
voltage of the current transformer. When reading the measured
value, additional error resulting from the current clamp sensor must
also be taken into consideration
(default setting: Clip = Off = voltage display).
Improving Accuracy by means of Zero Balancing – Zero
The momentarily measured current value can be subtracted from
future measurements in all measuring ranges.
➭ Press the Zero softkey.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation is imple-
mented for future measurements.
➭ The correction or offset value is deleted by pressing Zero, by
changing to another measuring function or by switching the in-
strument off. The value is cleared from the display.
Gossen Metrawatt GmbH
51
8.15.4 Alternating Current Measurement with Current Clamp
Sensor – AAC and Hz
V~
Voltage/Current Transformer Output
When a current clamp sensor is connected to the multimeter
(V input), all current displays appear with the correct value in
accordance with the selected transformation ratio. The only pre-
requisite is that the current sensor is equipped with at least one of
the below listed transformation ratios, and that the ratio has been
previously selected in the following menu (Clip Off).
AAC
Hz
Clip Off
Measuring Ranges:
➭
➭
➭
➭
Set the rotary switch to V~ or Hz.
Press the MENU key.
mA/A: see Table
Press the “Setup for present measurement” softkey.
Set the Clip parameter to the desired transformation ratio (the
same ratio as selected at the current clamp sensor) as de-
scribed below in the current clamp settings menu, or select
the desired transformation ratio with the scroll keys.
Zero
Func
Hz (A)
➭
➭
➭
➭
The display is returned to the measurement view by pressing
the ESC key three times.
Measuring Ranges:
Hz: 300 Hz/3 kHz/
Hz: 30 kHz / 300 kHz
Repeatedly press the Func softkey until the desired measuring
function is displayed.
Connect the current clamp sensor’s measurement cables as
shown.
If necessary, conduct zero balancing by pressing the Zero key
(see description below).
Func
Current Clamp Setup Menu
>
Setup for present measurement Clip
V
MENU
m/4
Temp COIL
S+
S–
A
Off / 1:1 / 1:10 / 1:100 / 1:1000
OK
OK
R
i
3 x > Measurement View
ESC
Ri ~ 9 M
Transformation Ra-
tio
Measuring Ranges
Clamp Type
300 mV
3 V
METRAFLEX 300M
WZ12C,
Z3512A
1:1
1m V/1 mA
300.0 mA
3.000 A
3.000 A
~
CP30,
Current
1:10 AM
1m V/10 mA
METRAFLEX 3000/300M
WZ11B, WZ12B,
Z3512A
30.00 A
Rx
CP330/1100/1800
METRAFLEX 3000/300M,
WZ11B, Z3512A
1:100
1m V/100 mA
30.00 A
300.0 A
300.0 A
CP330/1100/1800
METRAFLEX 3000,
WZ12C, Z3512A
1:1000
1m V/1 A
3,000 kA
The maximum allowable operating voltage is equal to the nominal
voltage of the current transformer. When reading the measured
value, additional error resulting from the current clamp sensor must
also be taken into consideration (default setting: Clip = Off = voltage
display).
Improving Accuracy by means of Zero Balancing – Zero
The momentarily measured current value can be subtracted from
future measurements in all measuring ranges.
➭ Press the Zero softkey.
➭ The value ascertained for Zero is saved and appears above the
measurement display. Automatic compensation is imple-
mented for future measurements.
➭ The correction or offset value is deleted by pressing Zero, by
changing to another measuring function or by switching the in-
strument off. The value is cleared from the display.
52
Gossen Metrawatt GmbH
The Information > Sequence design > Press Store key to adopt func-
tion window is displayed once every 5 seconds for a duration
of 1 second.
8.16 Measuring Sequences – Test Sequences
If the same sequence of single measurements will be run fre-
quently (one after the other with subsequent report generation),
it’s advisable to make use of measuring sequences (also called
test sequences).
➭
If you want to insert a manual test step, for example a visual
inspection, press the Ins Check softkey.
One sequence with up to 10 measurement steps can be created
in the METRAHIT IM XTRA and the METRAHIT IM E-DRIVE. The
measuring steps can include measuring functions as well as mea-
suring instructions. The number of test sequences can be
increased to 16 with up to 63 measuring steps (firmware
1.003.000) for the METRAHIT IM XTRA and
➭
➭
If you would like to insert a comment, press the Text softkey.
You can enter a comment for each measurement step (func-
tion, check or text), which appears at the display during the
measuring sequence, for example “measure voltage at point
XY”. Press the Comment softkey to this end.
METRAHIT IM E-DRIVE with the help of the Sequence Functions
Expert functions expansion.
Enter a text using the keyboard which appears at the display
The METRAHIT IM TECH BT does not include a measuring
sequence function, but can also be equipped with 16 test
sequences with up to 63 measuring steps by means of the
above-mentioned functions expansion.
Acknowledge your entry by pressing the Enter softkey.
The sequence’s steps are displayed once again.
➭
Individual measurement steps can be removed by selecting
the desired step with the cursor and then pressing the Delete
softkey.
Information concerning installation of the functions expansion can
Automatic test sequences can be conducted in all rotary switch
positions except for OFF.
Editing Test Sequences
➭
➭
➭
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
Note
Test sequences can be managed in the instrument,
which is described in this section.
However, we recommend using convenient Sequence
Press the Edit sequence softkey. The sequences are displayed.
Select the test sequence to be edited with the scroll keys.
Acknowledge by clicking OK. The test sequence is displayed.
You can insert a measurement step with any desired measur-
ing function after pressing the Ins Function softkey:
Press the Ins Function key, select the desired function with the
rotary switch and acknowledge your selection by pressing the
STORE key.
Creating a New Test Sequence
The Information > Sequence design > Press Store key to adopt func-
tion window is displayed once every 5 seconds for a duration
of 1 second.
➭
If you want to insert a manual test step, for example a visual
inspection, press the Ins Check softkey.
➭
➭
If you would like to insert a comment, press the Text softkey.
You can enter a comment for each measurement step (func-
tion, check or text), which appears at the display during the
measuring sequence, for example “measure voltage at point
XY”. Press the Comment softkey to this end.
Enter a text using the keyboard which appears at the display
Acknowledge your entry by pressing the Enter softkey.
The sequence’s steps are displayed once again.
➭
Individual measurement steps can be removed by selecting
the desired step with the cursor and then pressing the Delete
softkey.
Renaming a Test Sequence
➭
➭
➭
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
➭
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
Press the Edit Sequence softkey. The sequences are displayed.
Select the test sequence to be edited with the scroll keys.
Press the Rename softkey.
Press the Edit sequence softkey. The sequences are displayed.
First of all assign a name to the sequence to be created. Press
the New softkey to this end.
Change the name using the keyboard which appears at the
➭
➭
➭
➭
Enter a name using the keyboard which appears at the display
➭
Acknowledge your entry with the ENTER softkey. The name is
changed.
Acknowledge your entry by pressing the ENTER softkey.
The sequences are displayed again.
Select the new sequence with the scroll keys and ac-
knowledge by pressing the OK softkey.
Deleting a Test Sequence
➭
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
You can insert a measurement step with any desired measur-
ing function after pressing the Ins Function softkey:
Press the Ins Function key, select the desired function with the
rotary switch and acknowledge your selection by pressing the
STORE key.
Press the Edit Sequence softkey. The sequences are displayed.
Select the test sequence to be deleted with the scroll
keys.
Gossen Metrawatt GmbH
53
➭
➭
➭
Press the Delete softkey.
Running a Test Sequence
Acknowledge the security prompt.
The sequence is deleted.
Specifying Measured Value Storage for Sequences
Measured values can be saved in different ways when running a
sequence (see below):
•
Automatic:
The value is saved by pressing the STORE key and the next
sequence step is started automatically.
•
Manual:
The value is saved by pressing the STORE key. The next
sequence step isn’t started until the OK key is pressed.
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
➭
➭
➭
➭
Select any rotary switch position other than “OFF”.
Press the MENU key.
Press the Start Sequence softkey. General information concern-
ing the sequence is displayed at first:
Press the General Setup softkey.
STORE: Press the STORE key at the multimeter or on the Z270S
probe (METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE
BT only) at the end of a measurement step in order to save
one or more measured values, and the next step is started au-
tomatically.
Select the Sequence parameter with the help of the scroll
keys.
➭
➭
Switch to the submenu with the help of the scroll key.
Select the Data storage parameter with the help of the
scroll keys.
Note
➭
➭
➭
➭
Acknowledge by pressing the OK key.
Select the desired setting with the scroll keys.
Press the OK key.
If Menu > Sequence > Data Storage > Manual has been
selected, the measured value is saved but the sequence
doesn’t jump to the next measurement step automati-
cally. In this case, additionally press the OK key to start the
next step (see “Specifying Measured Value Storage for
Return to the main menu by pressing the ESC key or the MENU
key.
➭
The instrument is returned to the measuring mode after press-
ing the ESC key once more.
ESC: The sequence can be interrupted by pressing the ESC
key. Values saved up to this point in time are stored under a
name.
> General Setup Sequence
Automatic/manual
MENU
➭
➭
Press the Start softkey with red background.
Information concerning the pending measurement step is dis-
played first of all: Sequence step 1/x: measuring function XY
and measuring instructions if applicable.
2x
OK
ESC
➭
➭
➭
➭
Acknowledge this information by pressing the OK softkey with
green background.
A warning appears prompting you to select the rotary switch po-
sition which is required for the respective measuring function.
The active sequence is displayed in the status bar by means
of the SEQ symbol.
The respective measuring function is started automatically if a
voltage measurement is involved. For other measuring func-
tions, the Start softkey for the respective measuring function
must first be pressed, and subsequently the Stop softkey.
➭
➭
Press the OK key in order to save the measured value. The
next measurement step is then started.
If the last measurement step of the measuring sequence is
ended by pressing the OK softkey, the first four measurement
steps or measuring functions are displayed and stored with
value, date and time. Press the scroll key in order to display
further measurement steps.
➭
The measuring sequence is ended by pressing the STORE soft-
key. A corresponding message appears.
54
Gossen Metrawatt GmbH
Overview of the Meanings of Softkeys and Hard Keys
Key
Function
Softkeys
New
Create a new test sequence
Rename
Ins. text
Change the name of the test sequence
Enter text above the selected line*
Ins. Function Insert a measurement step with a measuring function above the selected line
Ins. Check
Delete
Insert a measurement step with a measuring instruction above the selected line
Delete a measurement step which has been previously selected with the cursor or
delete a sequence which has been previously selected with the cursor
Comment
Start
Enter a comment for the selected measurement step*
Start the measuring sequence
Start the measurement
Pause
Temporarily suspend the measurement
Temporarily suspend the measuring sequence
Terminate
Abort the measurement
Abort the measuring sequence
OK
Softkey: acknowledge instructions in the measuring sequence
Hard Keys
Sequence creation: select measurement step (1 to 10)
STORE
Sequence creation: transfer the measuring function to the sequence,
Sequence run: save the measured value for the current measurement step by
pressing the hard key at the multimeter or on the Z270S probe
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only).
OK
Sequence run: end the measurement step.
*
Gossen Metrawatt GmbH
55
Establishing a Bluetooth® Connection
9
Interface Operation and Software
Establish connection to your PC, smartphone (Android) or tablet
(Android) in the usual way for the respective system. Read the
documentation included with the device in this regard.
®
The multimeters are equipped with a Bluetooth interface by
means of which they can establish connection to a PC, a smart-
phone (Android™) or a tablet (Android™).
The following instructions are provided as an example for a PC
®
®
running Microsoft Windows 10.
®
9.1
Bluetooth
®
➭
➭
➭
®
®
The receiving device must be equipped with Bluetooth function-
®
Open the Windows start menu.
ality or be connected to a Bluetooth adapter with the following
minimum technical requirements: Bluetooth 4.2 + EDR, class 2.
Click Settings.
The Windows Settings dialog opens.
®
The following Bluetooth adapters for communication between
the METRAHIT IM XTRA BT / METRAHIT IM E-DRIVE BT and the PC have
already been successfully tested: Belkin F8T016NG, LOGI LINK
BT0007 and SITECOM CN-524 V2 001.
➭
➭
➭
Click the Devices button.
The Devices dialog appears with the Bluetooth & other devices
window.
®
In Windows , click the Add Bluetooth or other device button in
the Add Bluetooth & other devices dialog.
The Add a device dialog appears.
Activating and Deactivating the Interface
Note
Bluetooth remains (de)activated even after the instru-
ment has been switched on/off.
®
Click the Bluetooth button.
The system searches for Bluetooth devices. After some
time, the device appears.
®
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Note
If you have several multimeters, make sure that connec-
tion is established to the right multimeter!
The device name is helpful for the unequivocal identifica-
Select the Interface menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the Bluetooth parameter with the help of the scroll
keys.
➭
Click the device.
You’re prompted to enter the device’s PIN.
➭
➭
➭
Acknowledge the selected parameter by pressing the OK key.
Change the respective number with the scroll keys.
Acknowledge your change with the OK key.
➭
➭
Click the Connect button.
Connection is established and acknowledged by a confirma-
tion message.
> General Setup Memory Interface
MENU
➭
Click the Finish button.
The devices are connected.
Bluetooth
3x
On, Off
OK
OK
ESC
Configuring Interface Parameters
®
A PIN is used to protect the Bluetooth connection. The PIN has
to be entered to the remote terminal when connection is estab-
lished.
Default PIN = 1234
Note
We recommend the use of an individualized PIN in order
to assure that no third parties can gain access to your
instruments.
➭
➭
➭
➭
➭
➭
➭
➭
Press the MENU key.
Press the General Setup softkey.
Select the Interface menu with the scroll keys.
Switch to the submenu with the help of the scroll key.
Select the PIN parameter with the help of the scroll keys.
Acknowledge the selected parameter by pressing the OK key.
Change the respective number with the scroll keys.
Acknowledge your change with the OK key.
> General Setup Memory Interface
MENU
PIN
1234
OK
3x
OK
ESC
56
Gossen Metrawatt GmbH
9.2
Software for Receiving and Evaluating Data
Note
If an error message appears indicating that the instru-
ment cannot be found, check the Bluetooth connection
We recommend METRAHIT IM Data Reader software for your PC.
Alternatively, you can retrieve measured values using a terminal
program.
®
Data can be conveniently displayed and evaluated on a smart-
phone (Android) or a tablet (Android) with the METRALOG app.
Program Controls
The METRAHIT IM Data Reader is only available in English.
We recommend Sequence Manager PC software for the manage-
ment of measuring sequences.
About
Connect
Program Information
Connect to Instrument
!
Attention!
Sequence
Device
Connection Status
Green =
Connected
Always create a backup copy of your measurement
data. Any and all liability for loss of data is excluded.
Any and all liability is excluded for possible software er-
rors, in particular also resulting from interaction with
other applications.
Help
Filter
Selection List
Group Filter
9.2.1 METRAHIT IM Data Reader (PC)
METRAHIT IM Data Reader is PC software for transferring and read-
ing out measurement data from the instrument to a PC. The mea-
sured values can be subsequently saved as a CSV file.
Note
Follow the steps shown below in the specified order. Oth-
erwise it’s not possible to establish a connection between
METRAHIT IM Data Reader and the instrument.
Download & Installation
Complete information concerning current software and firmware,
as well as instrument updates and options, can be found in the
myGMC portal. Please register for free, after which you’ll have
access to the downloads and will always receive the latest infor-
mation about your instrument.
Reload Headers
Measurement
Data
Save to File
Save to File
Reload
Cancel Data Reading Measurements
Read Data from Table
Cancel Data Reading
Read Data from Table
For the METRAHIT IM Data Reader, download the Download Help for
Data Reader file and the current METRAHIT IM Data Reader ZIP file.
Displaying, Filtering and Selecting Data
After connecting your instrument, data are displayed in the Mea-
surements window.
!
Attention!
You can use the filter function if you only want to display and save
certain data. You can filter data according to groups (Group Filter)
and sequences (Sequence Filter). Select a filter criterion from the
respective selection list to this end. Available filter criteria depend
on the imported measurement data – for example all sequences
contained in the measurement data are displayed as filter criteria.
Read and follow the instructions in the Download Help for
Data Reader file. It includes all important information about
the program, such as system requirements and installa-
tion instructions.
Unpack the ZIP file and install the METRAHIT IM Data Reader in
accordance with the instructions found in the Download Help for
Data Reader file.
In order to load data for all measurements, select the measure-
ment’s row and click Read data from table. The read-in process can
be cancelled by clicking Cancel Data Reading. Select Reload headers
in order to update the data. You can load data from a single mea-
surement by double-clicking the corresponding line.
Connecting the Instrument to the PC
Connect the instrument to the PC to which the METRAHIT IM Data
®
56).
The measurement data are displayed in the Measurement Data win-
dow.
Starting the Program and Selecting the Instrument
If you’re using more than one instrument, select the current
instrument by name. Instructions on how to find your instrument’s
Data Storage
Measurement data which appear in the Measurement Data window
(see above) can be saved as a CSV file. Click the Save to file but-
ton to this end.
9.2.2 Terminal Program (PC)
!
Attention!
Do not start and use the METRAHIT IM Data Reader and the
Sequence Manager at the same time.
Read the documentation for your terminal program for further
information.
®
The programs interfere with each other’s Bluetooth
communication.
➭
➭
Start the program using the usual procedure for your operat-
ing system.
Select your instrument by name from the list at the top left and
click the Connect button.
The instrument is connected to the METRAHIT IM Data Reader.
Data are read in from the instrument to the program.
Gossen Metrawatt GmbH
57
METRAHIT IM XTRA BT and the METRAHIT IM E-DRIVE
BT, none for the METRAHIT IM TECH BT.
With Sequence Functions Expert: 16 sequences with up to
63 test steps.
9.2.3 METRALOG App (smartphone and tablet)
If you use a smartphone or a tablet with the Android operating
®
system and a Bluetooth interface, our METRALOG app provides
the following functions in combination with the multimeter:
•
Display of received multimeter measured values as:
Digital or analog values, measured value curve Y(t), measured
value logger
Note
Sequences with the identical names are possible!
Multiple sequences with identical names can be created
and managed, as well as imported and exported, at the
instrument and in the program.
•
•
Recording of measuring operations
Transmission of logs via wireless services and network ser-
vices
In order to avoid confusion, rename or delete the
•
•
•
Acoustic warning in the event that wireless connection is inter-
rupted
Trigger in the event of exceeding or falling short of an adjust-
able limit value
Download & Installation
Complete information concerning current software and firmware,
as well as instrument updates and options, can be found in the
myGMC portal. Please register for free, after which you’ll have ac-
cess to the downloads and will always receive the latest informa-
tion about your instrument.
Acoustic warning if a trigger event should occur
The METRALOG app can be obtained from the
Google Play Store (see QR code to the right) and
installed. Information regarding installation can be
found at the Google Play Store and in the docu-
mentation for your mobile device.
For the Sequence Manager, download the README.TXT file and the
current Sequence Manager ZIP file.
Complete information on working with the app can be found in its
own online help. Initial steps required after installation and for
operation are described below.
!
Attention!
Read and adhere to the README.TXT file. It includes all
important information about the program, such as sys-
tem requirements and installation instructions.
®
➭
➭
Activate Bluetooth at your measuring instrument.
Tap the app’s icon on the mobile device in order to start the
app.
➭
➭
Unpack the ZIP file.
Run the installation file.
The installation wizard appears.
➭
➭
Select multimeter from the list of receivable Bluetooth devices.
The following message appears: “Connecting to measuring
instrument via Bluetooth”.
➭
➭
Follow the instructions displayed by the installation wizard.
The software is installed on your PC.
In order to enable wireless connection, enter the same PIN
which you also entered under the multimeter’s PIN interface
parameter. After connection has been successfully estab-
lished, an analog display appears and “Measurement com-
pleted” appears at the bottom right.
Starting the Program
Start the program using the usual procedure for your operating
system.
➭
You can switch back and forth amongst digital display, Y(t)
measured value curve and analog display in the footer at the
left-hand side.
!
Attention!
Do not start and use the Sequence Manager and the
METRAHIT IM Data Reader at the same time.
➭
➭
You can start or stop a measured value recording by tapping
the REC symbol.
®
The programs interfere with each other’s Bluetooth
communication.
You can switch the display to the measured value logger over-
view by tapping the magnifying glass icon in the footer at the
right-hand side Measuring intervals can be selected here, in
order to display them graphically or transmit them.
9.2.4 Sequence Manager: Software for Test Sequences
Sequences”) can be created and managed at the instrument or in
more convenient Sequence Manager PC software. It provides the
following functions:
•
Import/export of sequences to and from a PC and the instru-
®
ment via Bluetooth
•
Sequence editing functions:
•
•
•
•
•
Create new sequences
Add and delete test steps
Copy and paste test steps
Change the order of test steps
Edit comments
•
Import/export of sequences as TXT files
Note
Observe the maximum possible number of test
sequences and test steps per instrument!
Standard: 1 sequence with up to 10 steps for the
58
Gossen Metrawatt GmbH
®
➭
➭
➭
Program Controls
The Sequence Manager is only available in English.
Start the program using the usual procedure for your operat-
ing system.
About
Read Sequences
Read Out
Program
Information
Workspace
Tools
Click the Read Sequences from Device button.
The Read Sequences from Device dialog appears.
Sequencesfrom
Instrument
Connected
Instrument
Progress Bar
➭
➭
➭
Select your instrument from the Please select the device port list.
Read from Instrument
Click the Read button.
The test sequences are imported from the device and can be
edited in the program.
The progress bar shows the read-in status.
Note
If an error message appears indicating that the port can-
®
not be connected, check the Bluetooth connection
Creating and/or Editing Sequences
With help of the appropriate tools, you can create, edit or delete
test sequences, including test steps, in the Workspace.
First of all, a new sequence has to be created or a sequence must
be selected which has been imported from the instrument. When
creating or editing a test step, select the desired measurement
from the Measurement Function list. Depending on the type of mea-
surement, one or more selection lists appear underneath from
which you select the measurement parameters. Optionally, a
comment or note concerning the test step can be entered in the
Comment field.
Export Sequences to File
Write Sequences
Progress Bar
Transfer to Instrument
Transfer Sequence File to Instrument
Transferring Sequences to the Instrument
After creating and/or editing test sequences, they can be trans-
ferred to an instrument. The sequences are then available at the
instrument.
Tools
Add new sequence
!
Attention!
Existing sequences are deleted!
Add sequence step
Edit
During transfer, all existing sequences are first deleted
from the instrument, after which the sequences from the
program are written to the instrument.
In this case as well, the name of the current instrument must be
known if more than one is in use. Instructions on how to find your
®
Delete
➭
➭
➭
Copy
Start the program using the usual procedure for your operat-
ing system.
Paste
Click the Write Sequences to Device button.
The Write Sequences to Device dialog appears.
Move up
➭
➭
Select your instrument from the Please select the device port list.
Click the Write button.
The progress bar shows the transmission status.
Move down
Expand all items
➭
The test sequences are exported to the instrument and can
be edited in the program.
Note
If an error message appears indicating that the port can-
®
not be connected, check the Bluetooth connection
Collapse all items
Reading in Sequences from the Instrument
If you want to edit test sequences which are stored at the instru-
ment, they have to be read in to the program.
If you’re using more than one instrument, the current instrument
has to be selected by name. Instructions on how to find your
Gossen Metrawatt GmbH
59
Saving Sequences as a File
Test sequences can be saved as a TXT file for use as a backup
copy, as well as for subsequent transfer to other instruments
(see below).
All sequences from the current workspace are always exported.
➭
Click the Export Sequences to File button.
The save dialog appears.
➭
➭
➭
Enter a memory location and a filename.
Confirm that the sequences should be saved.
The file is saved to your PC.
Importing Sequences from a File
Test sequences which have been saved as a TXT file (see above)
can be imported to the program in order to edit them or transfer
them to an instrument.
➭
Click the Import Sequences from File button.
The selection dialog appears.
➭
➭
➭
Select a test sequence file.
Confirm that the file should be opened.
The test sequences are imported to the program. The se-
60
Gossen Metrawatt GmbH
10 Characteristic Values
Intrinsic Uncertainty at Reference Conditions
(... % rdg. + ... d)
Measur-
ing
Function
(input)
Resolution at
Upper Range Limit
Overload
Input Impedance
Capacity 2
Measuring Range
30,000
3000
30,000
1, 11
~
30,000
1, 11
30,000
10 V
100 V
1 mV
3000
~ /
Value Time
10
300 mV
9 M
9 M
9 M
9 M
9 M // < 50 pF
9 M // < 50 pF
9 M // < 50 pF
9 M // < 50 pF
0.15 + 10
1000 V
DC
AC
3
30
V
V
V
0.15 + 10
0.15 + 10
0.2 + 20
0.5 + 30
1.0 + 30
1, 11
RMS
Sinusoi-
dal
Cont.
V
300
10 mV
1000
V
100 mV
9 M
9 M // < 50 pF
0.2 + 20
0.25 + 10
0.15 + 10
6)
1, 11
Voltage drop at approx. range limit
~
1 + 30
300 A
mA
10 nA
100 nA
1 A
10 A
100 A
Measurement input
70 mV
165 mV
190 mV
450 mV
3
0.3 A
1 A
Cont.
5 min
30 mA
1.0 + 30
A
0.5 + 30
300 mA
1
A
1.2
V
1, 11
~
0.5 + 30
1, 11
Factor: 1:1/10/100/1000
Input Impedance
6
0.3/3/30/300
A
300 mV
1.0 + 30
Measurement input
A
Voltage measurement input approx. 9 M
10
0.15 + 10
@ VAC
VDC
/
(
V socket)
3, 30, 300, 3 k
A
3 V
Plus current transformer clamp error
1000 V Max. 10 s
(... % rdg. + ... d)
Meas. current at
range limit
Open-circuit voltage
3000
3 m
30 m
300 m
30 m
0.001 m
0.01 m
0.1 m
0.01 m
0.1 m
1 m
2.8 … 3.8 V
2.8 … 3.8 V
2.8 … 3.8 V
> 4 V
1 A
1 A
1.0 +20
m @
1 A pulse
(4-wire)
m@
200 mA
(4-wire)
0.6 V
Cont.
14
0.5 + 7
1 A
200 mA
200 mA
200 mA
0.6 V
16
300 m
> 4 V
0.5 + 7
Cont.
Cont.
Cont.
14
3
> 4 V
m@
20 mA
(4-wire)
0.6 V
14
30
10 m
1 m
> 4 V
> 4 V
> 4 V
20 mA
200 mA
20 mA
0.5 + 7
R
(2-wire)
@ 200 mA: 3
2.5 +1010
2.5 +1010
Lo
18
0.6 V
15
@ 20 mA: 30
10 m
17
EN61557
10
300
3
k
10 m
100 m
< 1.4 V
< 1.4 V
< 1.4 V
Approx. 300 A
Approx. 100A
Approx. 10 A
Approx. 1 A
Approx. 0.2 A
Approx. 0.03A
0.2 + 30
0.15 + 1010
0.15 + 10
0.15 + 10
0.5 + 10
1000 V D
C
AC
RMS Max. 10 s
Sinusoi-
dal
(2-wire)
30 k
300 k
3 M
1
10
< 1.4
< 1.4
< 1.4
V
100
V
30 M
1 k
V
2.0 + 10
300
100 m
1 mV
Approx. 3 V
Approx. 8 V
1 + 5
Approx. 1 mAconst.
3
4,5 V
0.5 + 2
Discharge
resistance
U0 max
(... % rdg. + ... d)
4 10
30 nF
10 pF
10 M
1 M
100 k
12 k
0.7 V
0.7 V
0.7 V
0.7 V
0.7 V
1.5 + 10
4
1000 V
DC
AC
RMS
Sinusoi-
dal
300 nF
100 pF
1 + 6
4
F
3
F
1
nF
1 + 6
Max. 10 s
4
30 F
300 F
10 nF
1 + 6
4
100 nF
3
k
5 + 6
5
(... % rdg. + ... d)
fmin
6
300 Hz
0.01 Hz
0.1 Hz
1 Hz
Hz (V)
Hz(A
1000 V Max. 10 s
:
Hz (V)/
Hz (A)
)6:
3
kHz
1 Hz,
8
0.05 + 5
30 kHz
Hz (A
)
7
300 kHz
10 Hz
20 Hz,
Hz (A):
13
Resolution
0.1%
Voltage MR
Frequency MR
15 Hz ... 1 kHz,
> 1 kHz ... 4 kHz,
15 Hz ... 1 kHz,
(... % MR + ... d)
0.2% rdg. + 8 d
10.0 ... 90.0
10.0 ... 90.0
5.0 ... 95.0
1000 V
DC AC
RMS
3 V AC
0.2% MR/kHz + 8 d
0.2% rdg. + 8 d
18
%
Cont.
Sinusoi-
dal
30 V AC
15.0 ... 85.0
> 1 kHz ... 4 kHz,
0.2% MR/kHz + 8 d
6)
RPM 18
30 … 30,000
1 RPM
9
(... % rdg. + ... K)
– 200 ...
+850 C
– 200 ...
+850 C
– 250 ...
Pt 100
0.5 + 1.5
1000 V
DC/AC
RMS Max. 10 s
Sinusoi-
dal
Pt 1000
K
0.1 C
0.5 + 1.5
1 + 5
C / F
(NiCr-Ni) +1372 C
1
2
3
4
5
6
10
At 0 ... +40 C
Display up to 4.5, “OL” for higher values.
With active ZERO function
11
Accuracy applies as of 1% MR. Values < 50 digits are suppressed at the zero point due to the TRMS
transformer.
12
13
14
15
16
17
10 minute cool-down period
Applies to measurements at film capacitors
Required signal range: 30% to 100% of the voltage measuring range
The integrated FF1A/1000V fuse blows in the event of overloading.
The integrated FF0.315A/1000V fuse blows in the event of overloading.
For 30 m and 300 m measuring ranges with active TComp function
Lowest measurable frequency for sinusoidal measuring signals symmetrical to the zero point
Overload capacity of the voltage measurement input:
6
Power limiting: frequency x voltage max. 6 x 10 V x Hz @ U > 100 V
7
8
Overload capacity of the current measurement input: see current measuring ranges for maximum
current values
A test current of 200 mA must be selected for the 0.2 to 2 measuring range in order to check
protective measures in accordance with the standard.
Input sensitivity, sinusoidal signal: 10% to 100% of the voltage or current measuring range, restric-
tion in mV measuring range: 30% rdg.
The voltage measuring ranges with max. 10 kHz apply in the A measuring range.
18
METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only
9
Key: d = digit(s), MR = measuring range, rdg. = reading (measured value)
Plus sensor deviation
Gossen Metrawatt GmbH
61
Insulation Measurement
Influencing Quantities and Influence Error
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT only)
Intrinsic Uncer-
tainty at Reference
Conditions
Influencing
Quantity
Sphere
of Influence
Measured Qty./
Influence Error
(...% rdg. + ... d)/10 K
Measuring Range 1
Nominal Voltage
UISO
Measuring Range Resolution
V
0.2 + 5
0.4 + 5
0.5 + 5
1 + 5
(% MR + d)
V
1
3 ... 1000 V
300 k2
3 M
1 V
Ri=1M
3 + 3
300 ... 3 M
30 M
mA/A
50, 100, 250, 500, 1000 V
50, 100, 250, 500, 1000 V
50, 100, 250, 500, 1000 V
50, 100, 250, 500, 1000 V
250, 500, 1000 V
0.1 k
1 k
2 + 10
2 + 10
2 + 10
5 + 10
5 + 10
0 C ... +21 C
and
+25 C... +40 C
Temperature
0.5 + 5
0.8 + 5
2 + 5
30 M
300 M
3000 M
10 k
100 k
1 M
mA/A
30 nF ... 300 F
Hz
0.2 + 5
0.5 + 5
1
2
TRMS interference voltage measurement (V
) with 1 M input resistance,
C/F (Pt100/Pt1000)
AC+DC
frequency response width: > 65 Hz ... 500 Hz, accuracy: 3% + 30 digits
Current for the M measurement with U is limited to 1 mA. And thus when measuring small
1
ISO
deviates from U , i.e. U
With zero balancing
insulation resistances, U
is correspondingly smaller.
Actual
Set
Actual
Example: at R 200 k max. 200 V
ISO
Frequency Influence for V / V
AC
Voltage Ranges
AC+DC
Deviation1
Measuring Nominal Open- Nomi- Short- Acoustic
Circuit Signal for
Cur-
Overload Capacity
2
2
Function Voltage Circuit nal
UN Voltage Cur-
300 mV range
(...% MR + ... d)
3 V, 30 V, 300 V range
(...% MR + ... d)
1000 V range
(...% MR + ... d)
Value
Time
Frequency Range
Uomax. rent IN rent Ik
15 Hz ... 45 Hz,
> 65 Hz ... 1 kHz,
2 + 30
0.5 + 30
2 + 30
2 + 30
0.5 + 30
1.5 + 30
1.5 + 30
5 + 30
2 + 30
Uinterference
M@UISO
/
U > 1000
V
1 + 30
—
50
—
—
—
1000 V
Cont.
10 s
> 1 kHz ... 10 kHz,
> 10 kHz ... 20 kHz,
> 20 kHz ... 50 kHz,
> 50 kHz ... 100 kHz,
10 + 30
1.2 x 1.0 mA < 1.4 U > 1000 1000 V
3 + 30
–
–
–
100
250,
UINS
1.12 x
UIso
mA
V
3 + 30
M@UISO
10 + 30
10 + 30
500 V
1000 V
1
2
For sinusoidal input signals > 10% to 100% of the range (mV range: as of 30% of the range), at 1% to
10% of the range: f < 50 kHz, intrinsic error increased by 0.2% of the upper range limit.
Overload capacity of the voltage measurement input:
Inter-Turn Short Circuit Test (only METRAHIT IM XTRA BT or METRAHIT IM
E-DRIVE BT and optional COIL adapter)
6
Power limiting: frequency x voltage max. 6 x 10 V x Hz @ U > 100 V
Intrinsic Uncer-
tainty at Reference
Conditions
Frequency Influence for I / I
Current Measuring Ranges
Influence Error 1
AC AC+DC
Nominal Voltage
UISO
Measuring Range
Resolution
3+ 30 > 100 d
(% MR + d)
300 A to 300 mA
(...% MR + ... d)
1 A range
(...% MR + ... d)
Frequency Range
1
0.3 V ... 1000 V
10.0 ... 30.9 µs
31 ... 250 µs
Ri=1M
0.1 [µs]
1 [µs]
15 Hz ... 45 Hz,
> 65 Hz ... 1 kHz,
> 1 kHz ... 2 kHz,
> 2 kHz ... 5 kHz,
> 5 kHz ... 10 kHz,
2 + 30
1 + 30
1 + 30
1 + 30
5 + 30
2 + 30
1 + 30
1 + 30
3 + 30
5 + 30
1% MR 10 d2
1000 V
1
2
TRMS interference voltage measurement (V
frequency response width: > 65 Hz ... 500 Hz, accuracy: 3% + 30 digits
) with 1 M input resistance,
AC+DC
The time value may vary by up to 10% for different COIL adapters. This is entirely without conse-
quence if you perform measurements with the same COIL Adapter and compare them.
1
For sinusoidal input signals > 10% to 100% of the range.
Inductance measuring ranges of optional COIL Adapters:
Influencing
Quantity
Sphere
of Influence
Measured Qty./
Measuring Range
•
•
COIL Adapter XTRA (Z270M): 10 µH to 5 H
COIL Adapter 50 mH (Z270F): 10 µH to 50 mH
Influence Error 1
1 ... 3
1% rdg.
Crest Factor CF
V
, A
> 3 ... 5
3% rdg.
Internal Clock
Time format
Resolution
Accuracy
1
Except for sinusoidal waveform
DD.MM.YYYY hh:mm:ss
0.1 s (measured values timestamp)
1 minute per month
Influencing
Quantity
Sphere
of Influence
Measured Quantity
V, A, , F, Hz, C
Ditto
Influence Error
Temperature influence 50 ppm/K
75%
3 days
instrument off
Relative
Humidity
1 x intrinsic uncertainty
in intrinsic uncertainty
Included
Battery Voltage
—
Reference Conditions
Influencing
Quantity
Measured Qty./
Measuring Range
Ambient temperature
Relative humidity
+23 C 2 K
Sphere of Influence
Damping
40% 75%
45 Hz 65 Hz
Sinusoidal
Interference quantity max. 1000 V
V
> 90 dB
> 90 dB
Meas. quantity frequency
Meas. quantity waveform
Supply voltage
Common Mode
Interference
Voltage
3 V
,
Interference quantity max. 1000 V
50 Hz ... 60 Hz sinusoidal
30, 300 V
1000 V
> 150 dB
> 150 dB
4.0 V 0.1 V
Interference quantity: V
,
respective nominal value of the measuring
range, max. 1000 V , 50 Hz ... 60 Hz
sinusoidal
Series Mode
Interference
Voltage
V
V
> 50 dB
> 50 dB
Interference quantity max. 1000 V
62
Gossen Metrawatt GmbH
Response Time (after manual range selection)
Power Supply
Measured Qty./
Measuring Range
Digital Display
Settling Time
Jump Function
of the Measured Quantity
Battery pack
3.7 V, 4000 mAh, LiPo
(approx. 25% self-discharging per year)
V
A
, V
, A
From 0 to 80%
of upper range limit value
1.5 s
Operating time
approx. 20 hours (without M
mea-
surement / R / R 4-wire measurement)
ISO
300 ... 3 M
2 s
Lo
Battery indicator
Battery capacity display via battery sym-
bol: , querying of
momentary charge level via menu function
30 M, M@U
Continuity
Max. 5 s
< 50 ms
Max. 3 s
1.5 s
ISO
From to 50%
of upper range limit value
C (Pt 100)
Power OFF function The multimeter is switched off automatically:
– when battery voltage
drops to below approx. 3.6 V
30 nF ... 300 F
Max. 5 s
1.5 s
From 0 to 50%
of upper range limit value
>10 Hz
– if none of the keys or the rotary switch
are activated for an adjustable duration
of 10 to 59 min. and the multimeter
is not in the continuous operating mode
Display
Rechargeable battery packs can only be recharged externally.
TFT color graphic display (55 x 36 mm) with analog and digital
display including unit of measure, type of current and various spe-
cial functions
Nominal
DUT
Operating
Measuring Voltage UN Resistance Time in
Number of Possible
Measurements with Nom.
Current per EN 61557
Function
Hours
20 1
Background Illumination
V
Activated background illumination can be regulated by means of
a light sensor.
V
15 1
RISO
100 V
100 V
500 V
1000 V
1 M
100 k
500 k
2 M
5
300
60
Analog Bar Graph
Scaling
Linear
20
Polarity display
Sampling rate
With automatic switching
1
Times 0.7 for interface operation
40 measurements per second and display
refresh
Electromagnetic Compatibility (EMC)
Digital Measured Value Display
Interference emission EN 61326-1:2013 class B
Resolution /
character height
320 x 480 dots, 12 mm
Number of places
31000 / 3100
4¾-place in the V, A, Hz and measuring
functions depending on parameter setting
Interference immunity EN 61326-1:2013
Short-term measured value deviation of up to 10% may occur during electromag-
netic interference thus reducing the specified operating quality.
Overflow display
Polarity display
Sampling rate
“OL” is displayed for 31,000 digits
or 3100 digits
“–” (minus sign) is displayed
if plus pole is connected to “”
Ambient Conditions
10 and 40 measurements per second with
the Min-Max function except for the capaci-
tance, frequency and duty cycle measuring
functions
Accuracy range
0 C ... +40 C
Operating temperature
(storage temp. with batt.)10 C ... +50 C
20 C ... +50 C with rubber holster
Storage temperature 25 C ... +70 C (without battery)
Refresh rate
2 times per second, every 500 ms
Relative humidity
40 ... 75%, no condensation allowed
Elevation
to 2000 m
Electrical Safety
Place of use
Indoors, except within specified ambient
conditions
Protection category II per EN 6 010-1
Measuring category CAT III CAT IV
600 V
Nominal voltage
Pollution degree
Test voltage
1000 V
2
Data Interface
7.4 kV~ per EN 61 010-1
Type
Bluetooth 4.2
Frequency band
Transmitting power
Functions
2.402 ... 2.480 GHz,
Max. 91 mW
Fuses
– Query measuring functions
and parameters
– Query momentary measurement data
Current measuring
ranges &
F1: FF 1 A/1000 V AC/DC,
6.3 x 32 mm
4-Wire m
measuring ranges
Fuse with breaking capacity of 30 kA at
1000 V AC/DC,
protects the current measurement
input in the 300 A to 1 A ranges
F2: FF 0.315 A / 1000 V
2-Wire m
measuring ranges
6.3 x 32 mm
(METRAHIT IM XTRA BT and
METRAHIT IM E-DRIVE BT
only)
Fuse with breaking capacity of 30 kA at
1000 V AC/DC
Gossen Metrawatt GmbH
63
Internal Measured Value Storage
Memory capacity
64 MBit for approx. 300,000 measured
values with indication of date and time
Mechanical Design
Housing
Impact resistant plastic (ABS)
Dimensions
235 x 105 x 56 mm
(without rubber holster)
Weight
approx. 0.7 kg with battery pack
Protection
Housing: IP 52
(pressure equalization via the housing)
Table Excerpt Regarding Significance of
IP Codes
IP XY
(1st digit X)
Protection Against
IP XY
Protection Against
Water Ingress
Foreign Object Ingress (2nd digit Y)
0
1
2
3
4
5
Not protected
50.0 mm
12.5 mm
2.5 mm
1.0 mm
Dust protected
0
1
2
3
4
5
Not protected
Vertically falling droplets
Dripping (15 angle)
Spraying water
Splashing water
Jet-water
Applicable Regulations and Standards
EN 61010-1
Safety requirements for electrical equipment for measure-
ment, control and laboratory use –
Part 1: General requirements
EN 61010-2-033
Safety requirements for electrical equipment for measure-
ment, control and laboratory use – Part 2-033: Particular re-
quirements for hand-held multimeters and other meters for
domestic and professional use, capable of measuring mains
voltage
EN 61326-1
EN 60529
Electrical equipment for measurement, control and laboratory
use – EMC requirements – Part 1: General requirements
Test instruments and test procedures
– degrees of protection provided by enclosures (IP code)
EN 61557-1 Electrical safety in low voltage distribution systems up to
(METRAHIT IM XTRA BT 1000 V AC and 1500 V DC – Equipment for testing, measur-
and METRAHIT IM E-
DRIVE BT only)
ing or monitoring of protective measures
Part 1: General requirements
EN 61557-2
Part 2: Insulation resistance
(METRAHIT IM XTRA BT
and METRAHIT IM E-
DRIVE BT only)
EN 61557-4
Part 4: Resistance of earth connection and equipotential
(METRAHIT IM XTRA BT bonding
and METRAHIT IM E-
DRIVE BT only)
64
Gossen Metrawatt GmbH
If fuses with other blowing characteristics, other current
ratings or other breaking capacities are used, the opera-
tor and the instrument are placed in danger.
11 Maintenance and Calibration
11.1 Displays – Error Messages
Message
FUSE
Function
Meaning
➭
Replace the fuse compartment cover. In doing so, insert the
side with the guide hooks first.
Current measurement Blown fuse
In all operating modes Battery voltage has fallen below 3.3 V
➭
➭
➭
Retighten the screw for the fuse compartment cover.
Replace the rubber holster.
0L
Measurement
Indicates overflow
Dispose of the blown fuse with household trash.
11.2 Fuses
Two measuring range inputs in the instrument are equipped with
one fuse each:
11.3 Housing Maintenance
No special maintenance is required for the housing. Keep outside
surfaces clean. Use a slightly dampened cloth for cleaning. In par-
ticular for the protective rubber surfaces, we recommend a moist,
lint-free microfiber cloth. Avoid the use of cleansers, abrasives
and solvents.
F1 = current measuring function
F2 = Rlo measuring function
(METRAHIT IM XTRA BT and METRAHIT IM E-DRIVE BT
only)
Maximum permissible voltage (= nominal voltage of the fuse) is
1000 V AC/DC each, and minimum breaking capacity is 30 kA
each.
11.4 Measurement Cables
Inspect the measurement cables for mechanical damage at regu-
lar intervals.
Both fuses are tested automatically:
•
•
•
When the instrument is switched on with the rotary switch in
the A position
!
Attention!
When the instrument is already on and the rotary switch is turned to
the A position
Even in the case of minimal damage to the test leads, we
recommend sending them to GMC-I Service GmbH
without delay.
In the active current measuring range when voltage is applied
If a fuse is blown or if no fuse has been inserted
the “FUSE” symbol appears at the display. The
respective fuse interrupts the associated mea-
suring ranges. All other measuring ranges
remain functional.
11.5 Recalibration
The measuring tasks performed with your instrument, and the
stressing it’s subjected to, influence aging of its components and
may result in deviation from the specified levels of accuracy.
In the case of strict measuring accuracy requirements, as well as
in the event of use at construction sites with frequent stress due
to transport and considerable temperature fluctuation, we recom-
mend a relatively short calibration interval of once per year. If your
instrument is used primarily in the laboratory and indoors without
considerable climatic or mechanical stressing, a calibration inter-
val of once every 2 to 3 years is sufficient as a rule.
Replacing the Fuse
!
!
Attention!
If a fuse should blow, eliminate the cause of overload be-
fore placing the instrument back into service!
During recalibration* at an accredited calibration laboratory
(DIN EN ISO/IEC 17025), deviations from traceable standards
demonstrated by your measuring instrument are documented.
Ascertained deviations are used to correct display values during
later use of the instrument.
Attention!
Disconnect the instrument from the measuring circuit be-
fore opening the fuse cover in order to replace the fuse!
We would be happy to perform DAkkS or factory calibration for
you at our calibration laboratory. Further information is available
on our website:
➭
➭
➭
Switch the instrument
off.
Remove the rubber hol-
ster if applicable.
cates and Declarations DAkkS Calibration Center Calibra-
tion Questions and Answers).
Set the instrument face
down onto the working
surface.
Recalibration of your instrument at regular intervals is essential for
the fulfillment of requirements according to quality management
systems per DIN EN ISO 9001.
➭
➭
Loosen the screw in the
fuse compartment
cover (see figure at
right).
Note
The test instrument should be calibrated at regular inter-
vals in a calibration laboratory accredited in accordance
with DIN EN ISO/IEC 17025.
Lift off the cover with
the screw and set it
aside.
➭
➭
Pry the blown fuse out
using the flat side of the fuse cover.
*
Examination of the specification, as well as adjustment, are not included in calibration.
However, in the case of our own products, any required adjustment is performed and
adherence to the specification is confirmed.
Insert a new fuse. Make sure that the fuse is centered, i.e. be-
tween the tabs at the sides.
!
Attention!
Use only the specified fuse type! The fuse must have a
The use of repaired fuses or short-circuiting the fuse
holder is prohibited.
Gossen Metrawatt GmbH
65
12 Accessories
13 Returns and Environmentally Sound Disposal
This instrument is subject to directive 2012/19/EC on Waste Elec-
trical and Electronic Equipment (WEEE) and its German national
equivalent implemented as the Waste Electrical and Electronic
Equipment Act (ElektroG) on the marketing, return and environ-
mentally sound disposal of electrical and electronic equipment.
The device is a category 9 product (monitoring and control instru-
ment) in accordance with ElektroG (German Waste Electrical and
Electronic Equipment Act).
12.1 General
The extensive accessories available for our instruments are
checked for compliance with currently valid safety regulations at
regular intervals, and are expanded as required for new applica-
tions.
You’ll find the right product-specific and recommended universal
accessories for your instrument with all the information you need
(description, order number, etc.)
The symbol at the left indicates that this device and its
electronic accessories must be disposed of in accor-
dance with applicable legal regulations, and not together
with household trash. In order to dispose of the instru-
ment, bring it to a designated collection point or contact our prod-
•
•
in the data sheet for your instrument.
12.2 Technical Data for Measurement Cables
(included with KS17-2 cable set and Z270S probe)
Electrical Safety
This instrument is also subject to directive 2006/66/EC on batter-
ies and accumulators and waste batteries and accumulators and
its German national equivalent implemented as the Battery Act
(BattG) on the marketing, return and environmentally sound dis-
posal of batteries and accumulators.
Maximum rated voltage
Measuring category
600 V 1000 V 1000 V
CAT IV CAT III CAT II
Maximum rated current
With safety cap attached
Without safety cap
1 A
1 A
16 A
—
—
—
The symbol at the left indicates that batteries and
rechargeable batteries must be disposed of in accor-
dance with applicable legal regulations. Batteries and
rechargeable batteries may not be disposed of with
household trash. In order to dispose of the batteries or recharge-
able batteries, remove them from the instrument and bring them
to a designated collection point.
Observe the measuring instrument’s maximum values for electrical
safety!
Ambient Conditions (EN 61010-031)
Temperature
-20 C ... + 50 C
50 ... 80%
Relative humidity
Pollution degree
Segregated disposal and recycling conserves resources and pro-
tects our health and the environment.
2
Current and further information is available on our website at
Use of KS17-2 and Z270S
!
Attention!
Measurements per DIN EN 61010-031 may only be per-
formed in environments in accordance with measuring
category III with the safety cap attached to the test probe
at the end of the measurement cable.
In order to establish contact inside 4 mm jacks, the safety caps
have to be removed by prying open the snap fastener with a
pointed object (e.g. the other test probe).
66
Gossen Metrawatt GmbH
15.3 Repair and Replacement Parts Service
Calibration Center * and Rental Instrument Service
15 Addresses
15.1 Product Support
If required please contact:
Technical Queries
(use, operation, software registration)
GMC-I Service GmbH
Service Center
Beuthener Str. 41
If required please contact:
90471 Nürnberg · Germany
Phone: +49-911-817718-0
Gossen Metrawatt GmbH
Product Support Hotline
Fax:
+49-911-817718-253
Phone:
Fax:
e-mail:support@gossenmetrawatt.com
+49-911-8602-0
e-mail: service@gossenmetrawatt.com
+49 911 8602-709
This address is only valid in Germany.
Please contact our respective representatives or subsidiaries for
service in other countries.
15.2 Recalibration Service
We calibrate and recalibrate all instruments supplied by Gossen
Metrawatt GmbH, as well as other manufacturers, at our service
center, for example after one year within the framework of your
test equipment monitoring program, as well as prior to use etc.
*
DAkkS calibration laboratory for electrical quantities, registration no.
D-K-15080-01-01, accredited per DIN EN ISO/IEC 17025
Accredited quantities: direct voltage, direct current value, direct current resistance,
alternating voltage, alternating current value, AC active power, AC apparent power,
DC power, capacitance, frequency, temperature
Competent Partner
Gossen Metrawatt GmbH is certified in accordance with
DIN EN ISO 9001.
Our DAkkS calibration laboratory is accredited by the Deutsche
Akkreditierungsstelle GmbH (national accreditation body of the
Federal Republic of Germany) under registration number
D-K-15080-01-01 in accordance with DIN EN ISO/IEC 17025.
We offer a complete range of expertise in the field of metrology:
from test reports and factory calibration certificates right on up to
DAkkS calibration certificates.
Our spectrum of offerings is rounded out with free test equipment
management.
As a full service calibration laboratory, we can calibrate instru-
ments from other manufacturers as well.
© Gossen Metrawatt GmbHH
Prepared in Germany • Subject to change, errors excepted • PDF version available on the Internet
Alle Handelsmarken, eingetragenen Handelsmarken, Logos, Produktbezeichnungen und Firmennamen sind das Eigentum ihrer jeweiligen Besitzer.
All trademarks, registered trademarks, logos, product names and company names are the property of their respective owners.
Phone: +49 911 8602-0
Fax:
Gossen Metrawatt GmbH
Südwestpark 15
90449 Nürnberg • Germany
+49 911 8602-669
e-mail: info@gossenmetrawatt.com
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