MONARCH INSTRUMENT
Instruction Manual
Phasar-Tach
Phasar-Tach-R
Portable Tachometers
15 Columbia Drive
Amherst, NH 03031-2334 USA
Phone: (603) 883-3390
Fax: (603) 886-3300
© Monarch Instrument 2002 all rights reserved
E-mail: [email protected]
1071-4860-122
TABLE OF CONTENTS
DECLARATION OF CONFORMITY
SPECIFICATIONS ................................................................ 1
OVERVIEW .......................................................................... 2
OPERATION ......................................................................... 2
As Manufacturer:
Monarch Instrument
Division of Monarch International Inc.
15 Columbia Drive, Amherst NH 03031 USA
USING THE PHASAR-TACH WITH A REMOTE OPTICAL
SENSOR (ROS-5P)............................................................... 3
declares under Monarch’s sole responsibility that the product:
Name:
Model:
Hand Held Tachometer
Phasar-Tach
CALIBRATIONAND SELF-TEST.......................................... 3
BATTERIES .......................................................................... 5
CLEANING ........................................................................... 5
OPTIONS AND ACCESSORIES ........................................... 6
to which this declaration relates is in conformity with the following standards:
EMC:
EN50082-2:1995, Heavy Industrial
EN55011:1991 Group 1, Class B
and therefore conforms with the requirements of Council Directive
89/336/EEC relating to electromagnetic compatibility. The testing of this product
was performed by Curtis Straus Laboratories, MA in November of 1997.
(File 970573-2).
17th November 1997
Manufacturer (Amherst,NH)
Alture)
SPECIFICATIONS
OPTIONS AND ACCESSORIES
This product is designed for indoor or outdoor use under the following
conditions (per IEC1010-1):
ROS-5P*
EC-25P
R-5B
Remote Optical Sensor with 8 foot [2.4 m] cable and
mounting bracket
Speed Range:
Accuracy:
Resolution:
Display:
5 RPM to 100,000 RPM
± 1 RPM or .01% of reading
1 RPM
6-digit 0.45” high liquid crystal
Twice per second
25 foot [7.6 m] extension cable for remote sensors with
male/female 1/8 inch [3.2 mm] phone plug connectors
Recharger, 115 Vac - 50-60 Hz, with 4 “AA” NiCad
batteries
Display Update:
R-6B
Recharger, 230 Vac - 50-60 Hz, with 4 “AA” NiCad
batteries
On-Target Indication: Target (Bullseye) on lower left of display
Operating Distance: Range: 1 inch [25.4 mm] to 3 feet [0.9 m] for LCD
models and up to 15 feet [4.6 m] for Laser equipped
models from leading edge of reflective tape
B-4
Four “AA” rechargeable NiCad batteries
Nylon Padded Carrying Case
CC-1
CC-2
T-5
Angle: Up to 45° from perpendicular to leading
edge of reflective tape
Plastic Latching Carrying Case
Power-On Switch:
Optical System:
Pistol grip trigger - may be locked on with latching
push-button for longer duration measurements
Auto hold of last measurement for 90 seconds
Visible light source - incandescent lamp or laser
WARNING: Do not view the laser beam
directly as it could be
hazardous to the eyes. Do not
point the laser beam into
another person’s eyes. Do not
view the laser beam with
telescopic devices.
Reflective Tape - 5 foot [1.5 m] roll, ½ inch [12.7 mm]
wide
CAL-NIST
N.I.S.T. Traceable Certificate of Calibration
AVOID EXPOSURE
LASER RADIATION IS EMITTED
FROM THIS APERTURE
*NOTE: Sensors are available with other cable lengths of 15, 30, 50 or 100
feet [4.6, 9.1, 15.2 or 30.5 m]
LASER RADIATION
AVOID DIRECT EYE EXPOSURE
PEAK POWER
WAVELENGTH
3mw
650nm
CLASS IIIA LASER PRODUCT
Time Base:
Crystal controlled
Power Source:
4 “AA” batteries; Recharger socket provided for
optional rechargeable batteries
Recharger Input:
Temperature:
Max input 7.8 Vdc @ 50mA
41 °F [5 °C] to 104 °F [40 °C]
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Humidity:
Maximum relative humidity 80% for temperature
up to 88 °F [31 °C] decreasing linearly to 50%
relative humidity at 104 °F [40 °C]
BATTERIES
The Tachometer operates from four ‘AA’ size batteries which are located
under the hinged top of the instrument. To access these batteries, grip the
tapered cover at the optical lens end of the instrument and pull up. The
cover is hinged at the display end of the instrument and pivots fully out of
the way. It may also be convenient to keep a spare supply of reflective tape
in the free area underneath this cover.
Dimensions (LxWxH):6.13” x 3.25” x 1.75 “ plus 4.75” handle
[155.7 mm x 82.6 mm x 44.5 mm x 120.7 mm]
1.25 lbs [0.57 kg]
Weight:
OVERVIEW
The instrument will provide six to eight hours of continuous operation on a
single set of batteries, depending on the type used. The instrument is
provided with a built-in charging network, which works in conjunction with
the optional NiCad batteries. The optional recharger plugs into the single
jack located next to the optical lens at the front end of the instrument.
Fourteen to sixteen hours is required for a complete recharge. When the
battery voltage in the Phasar-Tach is getting low, the display will blink
“LO BAT” to indicate that the batteries need to be replaced.
Each Phasar-Tach model combines the accuracy and safety of a non-contact
optical tachometer with the convenience and ease of operation of a pistol
grip instrument. The instrument provides non-contact measurement of
rotational speed to an accuracy of .01% of reading. It reads RPM directly to
the nearest RPM, and a ‘on-target’ indicator is provided to verify the
instrument is properly aligned on a target and receiving valid information.
OPERATION
NOTE: Only use model R-5B (115 Vac) or R-6B (230 Vac) rechargers
with NiCad batteries. Do not attempt to charge non-rechargeable
batteries.
The Tachometer measures rotational speed from a single pulse per revolution.
This pulse is supplied by marking the rotating shaft with reflective tape in
an easily accessible location. The Tachometer is equipped with a built-in
incandescent or laser light source providing a beam which is aimed at the
reflective tape located on the rotating shaft. The pulse from the reflective
tape is received back through a single lens reflex optical system and detected
by a photocell inside the instrument. The Tachometer then computes the
rotational speed and displays it to a resolution of 1 RPM.
ALWAYS DISPOSE OF BATTERIES INASAFEAND RESPONSIBLE
MANNER.
CLEANING
To clean the instrument, wipe with a damp cloth using mild soapy solution.
To operate the Phasar-Tach, simply aim it at the reflective tape while
holding it at a distance of 1 inch [25.4 mm] to 3 feet [0.9 m] for incandescent
lamp units or up to 15 feet [4.6 m] for laser units (observe laser safety
precautions). Squeeze the pistol grip trigger, and read the indicated speed.
The on-target indicator must be on. The display is updated twice per
second.
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For longer duration measurements, the trigger latch on the side of the pistol
grip handle can be depressed after pulling the trigger, and the instrument
may be mounted on the 1/4-20 threaded bushing at the base of the handle.
Remote Optical Sensor can be used for measurements. The ROS-5P operates
3 feet [0.9 m] and ±45° from the reflective tape.
NOTE: The standard ROS-5P cable length is 8 feet [2.4 m]. Longer cables
When the trigger is released, the Tachometer will hold the last measurement
taken and display it for up 90 seconds.
up to 100 feet [30.5 m] are available.
On very small shafts, the Phasar-Tach will work down to a reflective tape
size of approximately 1/8 inch [3.2 mm] square. However, with this small
tape size, it would be necessary to operate the instrument very close to the
rotating shaft and insure it is held steady. For normal operation, a tape size
of approximately 1/2 inch [12.7 mm] square or larger is recommended, and
on very large diameter shafts or for very high-speed applications, a larger
size piece of tape may be required. It is also recommended that the reflective
tape be viewed just slightly off the perpendicular. The Tachometer will
operate at angles from 0 to 45 degrees, but best results are obtained by
aiming the instrument at the reflective tape at approximately a 10 to 20
degree angle. This insures that only pulses from the reflective tape are
received by the tachometer and minimizes the problem of interference from
a highly polished surface or varying ambient lighting.
Remote/Internal
Switch
Recharger Jack
Internal Optics
Lens
Figure 1 Phasar-Tach LCD-R
with Optional Remote Sensor (ROS-5P)
USING THE PHASAR-TACH WITH AN REMOTE OPTICAL
SENSOR (ROS-5P)
CALIBRATIONAND SELF-TEST
The -R version of the tachometer has a provision for using the optional
ROS-5P Remote Optical Sensor. In addition to the standard built-in optics,
a 1/8 inch [3.5 mm] phone plug is provided on the front panel to accept an
ROS-5P Remote Optical Sensor. Atoggle switch on the optics panel selects
internal or remote operation.
The Tachometer is a crystal controlled digital instrument that requires no
calibration. However, the accuracy of the instrument can be checked at any
time by aiming it at an old style fluorescent light and observing 7200 ±2
RPM. In countries with 50 Hz. power line frequency, the display will read
6000 ±2 RPM.
For applications requiring the ROS-5P Remote Optical Sensor, move the
Remote/Internal switch to the remote position to disable the internal optics
of the Tachometer. When the trigger is pulled or latched, the ROS-5P
NOTE: The Tachometer will not read on energy-efficient fluorescent lights.
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