
© ElektroPhysik
MiniTest 725, MiniTest 735, MiniTest 745
31 / 85
6.4.3 Manual calibration
In measure mode, press function key CAL to call the calibration mode.
6.4.3.1 Calibrating FN sensors
If a the measuring method “Auto-F/N” has been defined for a batch you
may calibrate for both, the ferrous and the non-ferrous base. In this
case, the calibration procedure will be performed twice. You will
automatically be asked to select the first base for which you wish to
calibrate. Use arrow up and down keys to make your selection and
press OK to confirm. After the calibration for your selected base has
been completed, you will be asked to choose the next one. Use arrow
up/down keys to make your selection and press OK to confirm. Perform
calibration accordingly. After this you will be asked again to select a
base. If calibration for both bases has been completed, you can quit
calibration by pressing “ESC”. You will go back to the measure mode.
6.4.3.2 Zero point calibration
Start calibration and put the sensor on the blank/uncoated calibration
sample. Wait for the signal to sound and lift sensor. Please observe the
instructions in section 6.1 General.
Repeat this procedure several times (approx. 3 to 10 times) on the
same measuring spot. The average
will be shown. Evaluation of
average is to increase accuracy of calibration. Accuracy will increase
with an increasing number of readings. Press OK to confirm zero
calibration. Press OK once again to complete the calibration procedure.
You will be asked to calibrate on the first precision standard. Press OK
to jump this step.
A list will appear to show you the points that have been calibrated.
Press OK to go back to the measure mode. In the Auto F/N calibration
you will go back to the base selection.