Mitutoyo Crib Toy 99MBH001B1 Series No 179 User Manual

No.99MBH001B1  
SERIES No.179  
Digi-Derm  
Digital coating  
thickness gage  
User’s Manual  
Read this User's Manual thoroughly  
before operating the instrument. After reading,  
retain it close at hand for future reference.  
1 INTRODUCTION  
CONVENTIONS USED IN USER'S MANUAL  
On Various Types of Notes  
The following types of notes are provided to help the operator obtain reliable  
measurement data through correct instrument operation.  
IMPORTANT An important note is a type of note that provides information  
essential to the completion of a task. You cannot disregard  
this note to complete the task.  
An important note is a type of precaution, which if neglected  
could result in a loss of data, decreased accuracy or  
instrument malfunction/failure.  
NOTE A note emphasizes or supplements important points of the  
main text. A note supplies information that may only apply in  
special cases (e.g.. Memory limitations, equipment configura-  
tions, or details that apply to specific versions of a program).  
TIP A tip is a type of note that helps the user apply the techniques  
and procedures described in the text to their specific needs.  
It also provides reference information associated with the topic  
being discussed.  
Mitutoyo assumes no liability to any party for any loss or damage,  
direct or indirect, caused by use of this instrument not conforming  
to this manual.  
Information in this document is subject to change without notice.  
© Copyright Mitutoyo Corporation. All rights reserved.  
ii  
WARRANTY  
In the event that the Mitutoyo Digi-Derm should prove defective in workman-  
ship or material, within one year from the date of original purchase for use, it  
will be repaired or replaced, at our option, free of charge upon its prepaid  
return to us.  
This warranty shall not apply if the product has been subject to fair wear and  
tear, abuse through misuse or improper use/handling/storage/maintenance/  
service/repair or through adaptation/modification by the original purchaser or  
any third party without prior written consent of Mitutoyo or as a result of  
damage by an actual disaster or circumstances beyond the control of Mitutoyo.  
To obtain service under this warranty the product must be returned to the  
nearest Mitutoyo Service Center. Any postage, insurance, or shipping charges  
incurred in returning the product for service are the responsibility of the  
purchaser.  
*
This warranty is not transferable and is only valid within the country of the  
original purchase.  
*
You may have additional rights under the laws of country of original  
purchase that do not allow the exclusion of implied warranties or the  
exclusion or limitation of certain damages. If these laws apply, Mitutoyo's  
limitations and exclusions may not apply to you.  
iii  
1 INTRODUCTION  
CONTENTS  
CONVENTIONS USED IN USER'S MANUAL ......................... i  
WARRANTY ........................................................................... iii  
1 INTRODUCTION .............................................................. 1-1  
1.1 Preface ................................................................................. 1-1  
1.2 Application ............................................................................ 1-1  
1.3 Nomenclature and Function ................................................. 1-2  
2 OPERATION..................................................................... 2-1  
2.1 Setting Power Source ........................................................... 2-1  
2.2 Calibration ............................................................................ 2-2  
2.2.1 Zero adjustment..................................................................... 2-2  
2.2.2 Gain adjustment .................................................................... 2-3  
2.2.3 Notes on calibration .............................................................. 2-4  
2.3 Measurement ........................................................................ 2-5  
2.3.1 Measurement method ............................................................ 2-5  
2.3.2 Holding displayed value ....................................................... 2-6  
2.3.3 Outputting displayed value ................................................... 2-6  
2.3.4 Rod stand .............................................................................. 2-6  
2.3.5 Over indication ...................................................................... 2-6  
3 SPECIFICATION AND SAFE-KEEPING .......................... 3-1  
3.1 Specifications ....................................................................... 3-1  
3.1.1 General specifications ........................................................... 3-1  
3.1.2 Output specifications ............................................................ 3-2  
3.2 Safe-keeping ........................................................................ 3-4  
SERVICE NETWORK  
iv  
v
1 INTRODUCTION  
INTRODUCTION  
1
1.1 Preface  
The Mitutoyo Digi-Derm is a coating thickness gage of non-destructive  
type with a digital display. If it is connected to the Digimatic Mini-  
processor, measurements can be printed and processed. Read this op-  
eration manual carefully before use.  
1.2 Application  
1) No.179-741, 179-745 & 179-746  
Capable of measuring the thickness of the following types of non-  
magnetic plating, films, etc. applied to magnetic materials (Iron,  
Nickel, Cobalt, etc.):  
Plating: Gold, Copper, Zinc, Tin, Chromium, Lead, Cadmium, etc.  
Paint: Oil-based paint, Lacquer, Synthetic resin, Metallic-coating,  
Rubber paint, etc.  
Lining: Resin, Rubber, Tar, Glass, etc.  
Parkerizing, Metal spraying, Oxide film, and other special film  
Film:Metal, Resin, Rubber, Paper or any other non-magnetic film  
can be measured using steel base metal as the reference.  
2) No.179-755 & 179-756  
Capable of measuring the thickness of the following types of non-  
conductive plating, films, etc. applied to non-magnetic materials  
(Brass, Copper, Aluminum, etc.):  
Paint: Oil-based paint, Lacquer, Synthetic resin, Rubber paint, etc.  
Lining: Resin, Rubber, Tar, Glass, etc.  
Oxide film, and other special film  
Film: Resin, Rubber, Paper or any other non-conductive film can  
be measured using Copper, Brass, or Aluminum base metal as the  
reference.  
1 - 1  
MANUAL No. 99MBH001B  
1.3 Nomenclature and Function  
1) Main unit  
Zero adj. volume  
Display  
Gain adj. volume  
Probe cable  
Power sw.  
Data output  
connector or  
Analog output  
connector  
Inch/mm  
conversion  
sw.  
(179-741)  
Hold key  
Print key  
(except for 179-741)  
AC adaptor jack  
Battery lid  
Rod stand  
(Rear view)  
MANUAL No. 99MBH001B  
1 - 2  
1 INTRODUCTION  
2) Probe  
Stopper  
Cable  
Knurled sleeve  
Bobbin case  
Core  
Fig. 1  
Zero adj. volume  
Used to set the display to zero.  
Gain adj. volume  
Used to adjust the Digi-Derm to indicate precisely the thickness of  
calibration film.  
Print key  
Used to output the displayed value to the connected Digimatic Mini-  
processor. (except for 179-741)  
Hold key  
Holds and releases the displayed value alternately.  
Inch/mm conversion sw.  
Converts the displayed mm values to inch values and vice versa.  
MANUAL No. 99MBH001B  
1 - 3  
MANUAL No. 99MBH001B  
1 - 4  
2 OPERATION  
OPERATION  
2
2.1 Setting Power Source  
The Digi-Derm operates from either dry batteries or AC power source.  
Perform the following setup with the Digi-Derm turned OFF.  
1) Dry Batteries  
Use four pieces of R6 (SUM-3). First, remove the battery lid on the  
bottom of the case by pushing it in the arrow-marked direction, then set  
the batteries over the ribbon in the proper polarity (+/-). Pulling the  
ribbon removes the batteries.  
Ribbon  
Fig. 2  
When the low battery indication "ERR" is displayed or "three  
decimal point indications" are turned on during operation, replace  
the batteries with new ones.  
2) AC Power Source  
Connect the AC adaptor (Optional) to the AC adaptor jack of the  
Digi-Derm, then to the AC power outlet.  
2 - 1  
MANUAL No. 99MBH001B  
2.2 Calibration  
Be sure to perform calibration before measurement. Calibration in-  
cludes two adjustment: zero adjustment and gain adjustment. The fol-  
lowing is a calibration procedure using the provided reference speci-  
men as the base metal.  
2.2.1 Zero adjustment  
(1)Turn the Zero and Gain adj. volume to the approximate center of  
each range.  
(2)While setting the probe to the specimen surface, turn the Zero adj.  
volume until the display becomes zero. When applying the  
probe,hold the knurled sleeve of the probe with your fingers and  
ensure that the probe is perpendicular, its end completely level  
with the specimen surface.  
The probe should be applied to a point where a measurement is to be  
actually performed.  
ZERO  
(EX.: metric)  
Reference specimen  
Fig. 3  
(3)Apply the probe to the same point on the specimen as in (2) sev-  
eral times in succession, then check that zero is displayed each  
time.  
MANUAL No. 99MBH001B  
2 - 2  
2 OPERATION  
2.2.2 Gain adjustment  
Perform gain adjustment after zero adjustment.  
(1)Place the provided calibration film on the reference specimen.  
For accurate measurement, use a calibration film of thickness as  
close to that of the coating to be measured as possible.  
(2)Applying the probe on the calibration film, turn the Gain adj. vol-  
ume until the Digi-Derm indicates exactly the thickness as desig-  
nated on the film. Refer to 2.2.1 (2) for the way the probe is ap-  
plied.  
The probe should be applied to the same point as used for "Zero  
Adjustment".  
SPAN  
(EX.: metric)  
Calibration film (Ex.: 100µm)  
Reference specimen  
Fig. 4  
(3)Remove the calibration film, then check the zero point (refer to  
2.2.1 (3)). Place the film on the specimen again, apply the probe  
to the film surface at the same point as applied at (2) several  
times, then check that the correct film thickness is displayed each  
time.  
2 - 3  
MANUAL No. 99MBH001B  
2.2.3 Notes on calibration  
Although the provided reference specimen was used as a base metal in  
the above example to explain calibration procedures, use a base metal  
identical in material, shape, and thickness with that of the workpiece  
for calibration, for improved accuracy in measurement. If such a base  
metal is not available, use one as similar in these three characteristics  
as possible to the workpiece to be actually measured.  
About the base metal size  
For a flat-surface base metal, more than 30 x 30mm is recom-  
mended to use for reliable calibration, although the portion of  
φ5mm (.2") [for 179-741, 179-745 & 179-746 ] or φ8mm (.3")  
[for 179-755 & 179-756] can be measured.  
1) Material  
The material of the base metal used for calibration should be as similar  
to that of the workpiece as possible.  
2) Shape  
The shape of the base metal used for calibration should be as similar  
to that of the workpiece as possible. Calibration should be performed  
at a point where measurement is to be actually performed.  
Ex.:  
When taking measurement at point A, calibrate at point A'. The same is  
true with the other points in Fig. 5.  
Coating  
B
B'  
A
A'  
C
C'  
D
D'  
Base metal  
Workpiece  
Fig. 5  
3) Thickness  
The thickness of the base metal used for calibration should be as simi-  
lar to that of the workpiece as possible. But a base metal of over 1mm  
in thickness hardly affects thickness measurement.  
MANUAL No. 99MBH001B  
2 - 4  
2 OPERATION  
2.3 Measurement  
2.3.1 Measurement method  
If calibration is complete, the Digi-Derm is ready for measurement. It  
will indicate the coating thickness on the point where the probe is ap-  
plied. For accurate measurement, the probe should be applied to the  
same point as that where calibration was performed.  
Calibration the Digi-Derm regularly at appropriate intervals.  
1) Measurement on a curved or round surface  
The V-grooves of a probe allow exact measurement on a curved or  
round surface. For measurement on such surface, calibrate the Digi-  
Derm first in the same conditions as those in which measurement is to  
be performed, i.e., using a base metal of the same material, shape and  
thickness as that of the workpiece.  
V-groove  
O
R
R
Fig. 6  
2) Other notes on measurement  
If surface roughness of the base metal is over 3µm Rmax., or the coat-  
ing thickness is not uniform, the coating thickness should be deter-  
mined as the arithmetical average of several points on the same surface.  
2 - 5  
MANUAL No. 99MBH001B  
2.3.2 Holding displayed value  
Pressing the Hold key with the probe applied on the measured surface  
holds the display with "H" or "" (179-741) sigh indication. The  
analog output is not held in the HOLD state (179-741). To release the  
Digi-Derm from HOLD state, press the key again.  
2.3.3 Outputting displayed value  
If data print-out and processing are needed, connect the Data output  
connector on the Digi-Derm to the Digimatic Mini-processor* (op-  
tional) with the cable No. 936937 (optional). To output the displayed  
value to the processor, press the Print key on the Digi-Derm (except  
for 179-741) or the data entry key on the processor. Data output can  
also be performed in the HOLD state.  
*179-741 additionally requires the A/D converter.  
2.3.4 Rod stand  
You can raise the rod stand folded in the bottom of the Digi-Derm so as  
to incline the front panel. Since the rod stand can easily become de-  
tached, don't use this stand as a carrying handle or for any purpose  
other than as a stand.  
2.3.5 Over indication  
If "OVER" or "Initial display" (179-741) is displayed when the  
probe is placed on the measured surface, this means that the thickness  
is exceeding the measuring range of the Digi-Derm.  
T > Measuring range  
T
Coating  
Base metal  
Fig. 7  
MANUAL No. 99MBH001B  
2 - 6  
3 SPECIFICATION AND SAFE-KEEPING  
SPECIFICATION AND  
SAFE-KEEPING  
3
3.1 Specifications  
3.1.1 General specifications  
Code No.  
179-741  
179-745  
179-746  
179-755  
179-756  
Workpiece  
Non-magnetic coating on  
magnetic material  
Non-conductive coating on  
on non-magnetic material  
Range  
1.500mm (.05900")  
1.000mm (.03930")  
Resolution  
Accuracy (range)  
0.001mm/.00005"  
3µm 1 digit  
(0-0.1mm)  
2µm 1 digit  
(0-0.1mm)  
2µm 1 digit  
(0-0.1mm)  
±3%±1 digit  
(0.1-1.1mm)  
±4%±1 digit  
(1.1-1.5mm)  
±2%±1 digit  
(0.1-1.1mm)  
±3%±1 digit  
(1.1-1.5mm)  
±2%±1 digit  
(0.1-1.0mm)  
Display  
Output  
3.5-digit LCD  
6-digit LCD  
Analog output  
(1V/fullscale)  
Digimatic Code Output format  
(For connection with M-SPC system)  
Min. measuring area  
φ5mm (.2")  
Convex: 3mm (.12")  
Concave: 25mm (.98")  
φ8mm (.3")  
Min. radius of  
curvature  
Convex: 7mm (.28")  
Concave: 25mm (.98")  
Min. thickness of  
base metal  
0.3mm (.012")  
Power supply  
Power consumption  
Battery life  
Two-way, four dry batteries of SUM-3 or AC adaptor (6V DC)  
Approx.120mVA  
Approx. 80 hours under continuous service (When battery  
voltage is down,the message "ERR" will be displayed.  
Operation temperature  
0 - 40°C  
Dimensions  
Digi-Derm: 180(H) x 100(W) x 44(D) mm (7.1 x 3.9 x 1.7")  
Detector: φ15 x 43(L) mm (.6 x 1.7")  
Weight  
500g (1.1lbs.), includes batteries  
3 - 1  
MANUAL No. 99MBH001B  
Code No.  
179-741, 179-745, 179-746  
179-755, 179-756  
Standard  
accessories  
SUM-3 ....................................4  
Carrying case .........................1  
Case for films .........................1  
Base metal, SPC (No. 933038) ...... 1  
Calibration film set (No. 945014)  
Base metal, ALP (No. 937305) ..... 1  
Calibration film set (No. 945049) . 1  
1
25µm  
50µm  
(No.527599)  
(No.527600)  
25µm  
50µm  
(No.527599)  
(No.527600)  
100µm (No.527601)  
250µm (No.527602)  
500µm (No.527603)  
1000µm (No.527604)  
100µm (No.527601)  
250µm (No.527602)  
500µm (No.527603)  
1000µm (No.527604) ....... 1ea.  
1500µm (No.685013) ....... 1ea.  
Optional  
AC adaptor  
accessories  
No.528041  
For 100V AC.  
No.528041A For 120V AC.  
No.528041D For 220V AC with West German AC plug.  
No.528041E For 240/220V AC without an AC plug  
No.936937  
No.732135  
Connection cable for M-SPC  
Probe for small hole  
(For 179-741, 179-745 & 179-746 only)  
3.1.2 Output specifications  
1) Connector pin assignment  
9
7
5
3
4
1
10  
8
6
2
Fig. 8  
Pin No. Signal I/O  
Description  
1
2
3
4
5
GND  
DATA  
CK  
---  
O
O
O
I
Ground  
Measurement data  
Clock for transmission  
Ready for transmission  
Request for data transmission  
Not used  
RD  
REQ  
6 - 10 NC  
---  
MANUAL No. 99MBH001B  
3 - 2  
3 SPECIFICATION AND SAFE-KEEPING  
2) Data format  
d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13  
MSD  
LSD  
All "F" (1111)  
decimal point  
3 (1100)  
Unit  
Ordinary  
measurement  
"F" (1111)  
Sign  
+: 0 (0000)  
: 8 (0001)  
Measurement  
mm: 0 (0000)  
inch: 1 (1000)  
-
Fig. 9  
Data consists of 13 digits (d1 thru d13); each digit consists of 4 bits.  
Data output to a linked data processor or other peripheral is effected via  
pin No.2 from d1 to d13 in bit serial, from the LSB (20) to the MSB (23)  
for each digit.  
3) Timing chart  
Using Print key of Digi-Derm  
RD  
20msec or more  
REQ  
0.6sec  
or less  
2sec or less  
CK  
T0  
T1  
T2  
T
DATA  
50  
50µsec or more  
50  
Fig. 10  
Using request signal for dmata transmission from the peripheral with-  
out using Print key of Digi-Derm  
RD  
H
2msec or more  
REQ  
2sec or less  
CK  
DATA  
Fig. 11  
3 - 3  
MANUAL No. 99MBH001B  
3.2 Safe-keeping  
For long service life of Digi-Derm, observe the following maintenance  
points:  
Keep the Digi-Derm clean and avoid moisture in the storage loca-  
tion.  
Do not apply excessive force or shocks to the Digi-Derm.  
Turn the Digi-Derm OFF after use.  
Remove the batteries from the Digi-Derm when the Digi-Derm is  
to be left unused for a long period.  
Avoid rubbing or excessive pressing of the measuring face of the  
probe to prevent scratches or deformation. Wear on the measuring  
face degrades measuring accuracy. Check the accuracy of your  
Digi-Derm in the following manner: 1) prepare two calibration  
films of different thickness (e.g.: 50µm and 100µm); 2) calibra-  
tion the Digi-Derm on the provided reference specimen with one  
calibration film (e.g.: 100µm); and 3) make sure that the measure-  
ments of the other film (e.g.: 50µm) are as accurate as laid out in  
"Specification".  
MANUAL No. 99MBH001B  
3 - 4  
3 SPECIFICATION AND SAFE-KEEPING  
3 - 5  
MANUAL No. 99MBH001B  

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