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TC-BA-e-1712
d) If an accuracy of measurement is suspected, we recommend calibrating the in-
strument before measuring, as described in part 5.
e) The instrument can be switched off by pressing the Power- key 3-6. Or it will
switch itself off 50 seconds after the last key operation.
f) The measurement unit can be indicated in `µm` or `mil`. To convert:
- by pressing the conversion key 3-7
or
by pressing the Power- key 3-6 and without
releasing it until `UNIT` appears on the display. Then the Zero- key 3-3 has to be
pressed. Measurement unit changes when the Power- key is released. All in all, this
operation lasts about 7 seconds (from starting to press the Zero-key or / to press the
Power-key).
g) To change the measurement mode from `single` to `continuous` or the other way
round, the Power- key 3-6 respectively Zero-key 3-3 has to be pressed and not re-
leased until `SC` appears on the display. Then the Zero- key 3-3 has to be pressed.
Symbol
((•))
indicates the continuous mode and `S` indicates the single mode. This
operation lasts 9 seconds (from starting to press the Power- key 3-6).
5 Zero- Adjustment (Calibration)
a) Zero- adjustment for `Fe` (=F) and `NFe` should be carried out separately.
The Zero-plate of iron has to be chosen, if `Fe` is displayed and zero-plate of alumi-
num has to be chosen if `NFe` is displayed.
Sensor 3-1 has to be placed carefully onto the appropriate base plate or another un-
coated base material. The Zero- key 3-3 has to be pressed without lifting the sensor.
`0` appears on the display.
Attention: The adjustment is invalid, if the sensor is not placed directly on the
base plate or another uncoated material.
b) An appropriate standard foil has to be selected, according to the measurement
range of the coating to be measured.
c) The selected standard foil has to be placed onto the base plate (zeroing –plate
included in delivery) or an uncoated material for all outstanding tests.
d) The sensor 3-1 has to be pressed carefully onto the middle of the adjustment foil
and then lifted. The reading on the display is the coating thickness value measured.
This can be corrected by pressing the Plus- key 3-4 or the Minus- key 3-5 while the
sensor is removed from the base plate or the measured base material.
e) Step d) has to be repeated until the required accuracy is achieved and the result is
correct.
