M&A INSTRUMENTS CM8826FN Installation manual

The model ofthis gauge is
F type , only 1 F probe
N type , only 1 N probe
F & N typ e, 1 F & 1 N pr obe
Please read only the related parts in the
manual.
case assures maintenance free performance
for many years.
2SPECIFICATIONS
Display 4 digits, 10 mm LCD
Range 0~1250 um/0~50mil
Resolution 0.1 um (0~99.9um)
1 um (over 100um)
Accuracy 1~3%n or 2.5 um or 0.1mil
(Whichever is the greater)
PC interface: with RS-232C interface
RS-232C cable & software: not included
(The above are optional accessories)
Power supply 4x1.5 AAA(UM-4) battery
Operating condition: Temp. 0~50 ,
Humidity <80%
Size 126x65x27 mm (5.0x2.6x1.1 inch)
Weight: about 120 g if 1 probe
about 160g if 2 probes
not including batteries
Accessories
Carrying case ...................1 pc.
Operation manual ............ 1 pc.
F probe (if F type) ............1 pc.
N probe (if N type).... ........1 pc.
Calibration foils...............1set
Substrate Iron ............1 pc.
( if F type)
Substrate (Aluminium)......1 pc.
(If N type)
DIGITAL COATING
THICKNESS GAUGE
if 'Fe' on the Display and take the aluminium
substrate if 'NFe' on the Display. Place the probe
(3-1) on the substrate steadily. Press the zero
key (3-3) and '0' will be on the Display before
lifting the probe. If pressing the ZERO key but
the probe is not placed on the substrate or an
uncoated standard, the zero adjustment is
invalid.
5.2 Select an appropriate calibration foil according
to your measurement range.
5.3 Place the standard foil selected onto the substrate
or the uncoated standard.
5.4 Place the sensor (3-1) mildly onto the standard
foil and lift. The reading on the display is the
value measured. The displayed reading can be
corrected by pressing the plus key (3-4) or minus
key (3-5) while the probe is away from the
substrate or the measuredbody.
5.5 Repeat step 5.4 untilthe result is correct.
6. BATTERY REPLACEMENT
6.1 When it is necessary to replace the battery, the
battery symbol ' ' will appear onthe Display.
6.2 Slide the Battery Cover ( 3-8) away from the
instrument and remove thebatteries.
6.3 Install the batteries (4x1.5v AAA/UM-4)
correctly into the case.
6.4 If the instrument is not to be used for any
extended period , remove batteries.
7. CONSIDERATIONS
7.1 In order to weaken the influence of the measured
material on the accuracy of measurement, it is
recommended that the calibrations should be
done on the uncoated material to be measured.
7.2 Probes will eventually wear. Probe life will
- +- +
5
2
10. Notes
10.1 Settings includes restoring factory setting, unit
setting, S/C setting, which should be done within
6 seconds at every stage. or the gauge will quit
itself and keepits status before.
10.2 It is strongly recommended that no changes
should be made to the value of Ln (controlled
by power key, It takes about 11 seconds from
starting depressing Power key. Its value can be
changed by plus/minus key after displaying Ln
and releasing the power key. Store its value and
quit by pressing Zero key.) which will seriously
affect the accuracy. Its value can be adjusted
by professional persons only under the cases of
replacing a new probe or making the gauge more
accurate. Generally, the larger the value of Ln, the
smaller the reading on a same thickness. A little
variation of valueof Ln willcause a great change in
reading at high end (e.g. at 500 um/20mil). The
rules to adjustthe valueof Ln are asfollow:
A. Reading at low end canbe adjusted tothe exact
value by the plus orminus key.
B. To enlarge the Ln if readings at low end ( e.g. at
51 um) is ok but reading at high end (e.g. at
432um) is too large. On the contrary, to decrease
the Ln if reading at low end ( e.g. at 51 um) is ok
but reading at high end (e.g. at 432um) is too
small .
C. Repeat procedures from A to B till the readings
on the every standard foil are satisfying the
accuracy.
7

3. FRONT PANELDESCRIPTIONS
4 MEASURING PROCEDURE
4.1 Connect the probe to the gauge.
4.2 Press the power key (3-6) to switch on the
gauge and '0'displays on theDisplay (3-2).
The gauge will restore the state of last
operation itself , with a symbol 'Fe' or 'NFe'
indicating on the Display.
4.3 Place the probe (3-1) onto a coating layer
3
3-1 Probes
3-2 Display
3-3 Zero Key
3-4 Plus Key
3-5 Minus Key
3-6 Power key (multi functional )
3-7 um/mil conversion key (shortcut key)
3-8 Battery Compartment/Cover
3-9 Jack forRS232C interface
1
1. FEATURES
* It meets the standards of both ISO2178 and
ISO-2361as well as DIN, ASTM and BS.
Suitable for the laboratory and for use in
harsh field conditions.
* The F probes measure the thickness of non-
magnetic materials (e.g. paint, plastic,
porcelain enamel, copper, zinc, aluminium,
chrome etc.) on magnetic materials (e.g.
iron, nickle etc.) . often used to measure the
thickness of galvanizing layer, lacquer
layer, porcelain enamel layer, phosphide
layer, copper tile, aluminium tile, some
alloy tile, paper etc.
* The N probes measure the thickness of non-
magnetic coatings on non-magnetic metals.
It is used on anodizing, varnish, paint,
enamel, plastic coatings, powder, etc.
applied to aluminum, brass, non-magnetic
stainless steel, etc.
* Automatic probe recognition.
* Manual or automatic shut down.
* Two measurement mode:
Single and Continuous
* Wide measuring range and high resolution.
* Metric/Imperial conversion.
* Digital display gives exact reading with no
guessing or errors.
* The use of durable, long-lasting components,
including a strong, light weight ABS-plastic
depend on the number of measurements taken and
how abrasive the coating is. Replacement of a
probe can be fitted by qualified persons only.
8. RESTORE FACTORY SETTINGS
8.1 When to restore?
It is recommended to restore factory settings in
the one of following cases.
A. The gaugedoes not measure anymore.
B. Measurement accuracy is degraded caused
by environmental conditions changedgreatly.
C. Replacement of anew probe.
8.2 How torestore?
Restore factory settings includes 'Fe' setting
and 'NFe' setting. You can restore one of them or
both of them respectively. Please follow
procedures below to restore factory settings.
8.2.1 Please note the symbol on the display is 'Fe' or
'NFe'. If 'Fe' is on the display, the operation
below is restoring thefactory setting for 'Fe' type.
and If 'NFe' is on the display, the operation
below is restoring the factory setting for 'NFe'
type.
8.2.2 Depress Power key and not release it till 'CAL'
appears on the Display. It is about 5 seconds from
starting depressing Power key.
8.2.3when F:H or nF:H is on Display, lift the probe
to more than 5 centimeters. Then press the Zero
key again and the gauge return to measurement
state. The factory setting is restored. Remember,
to restore factory settingshould be done within 6
seconds at every stage. Or the gauge will quit
itself and restorationis invalid.
6
4
to be measured. The reading on the Display is the
thickness of the coating layer. The reading can be
corrected by pressing the plus key (3-4) or
minus key (3-5) while the probe is away from
the substrate or the measured body.
4.4 To take the next measurement,just lift the probe
(3-1) to more than 1 centimeter and then repeat
the step 4.3.
4.5 If suspecting the accuracy of measurement, you
should calibrate the gauge before taking the
measurements. For the calibration procedures,
please refer to the calibration part 5.
4.6 Thegauge can be switched off by pressing the
Power key (3-6). On the other side, the gauge
will power itself off about 50 seconds after the
last operation.
4.7 To change the measurement unit 'um' or 'mil' by
A. Depressing the shortcut key (3-7) or
B. Depressing Power key and not releasing it
till 'UNIT' on the Display and then pressing
Zero key (3-3). It is about 7 seconds from
starting depressing Power key.
4.8 To change measurement mode from the single
to continuous or vice visa, just depressing
The Power key and not releasing it till 'SC'
on the Display andthen pressing Zero key (3-3).
The symbol ' ' represents continuous mode
and 'S' represents single mode. It is about 9
seconds from starting depressingPower key.
5. CALIBRATION
5.1 Zero adjustment
Zero calibration for 'Fe' and 'NFe' should be
carried out separately. Take theiron substrate
3-5
3-1
3-2
3-4
3-7
3-6
3-8
3-3
3-9