13
Measurement on reference hardness block N
o
2 (step 3)
–repeat the actions described in the
previous paragraph.
Correction (step 4)
–Repeat the actions described in step 2. When you have completed the correction,
press the
Ð
button to complete and save the new calibration. Pushing the
Ð
button will lead to the
completion of the steps and going out from ‘Calibration’ mode.
Verification of the hardness tester readings after the conducted calibration
Measure the hardness of reference hardness block N
o
1 (not less than 5 measurements) and compute its
mean value. The obtained value should be within acceptable tolerances for the scale.
If the obtained value exceeds the tolerance of the nominal value then you need to perform
‘CLEAR
CALIBRATION
’ function and repeat the CALIBRATION’ procedure.
‘Clear Calibration’ Operation
Hardness tester calibration by users requires highly skilled professional personnel. If you failed to
introduce the correction to the hardness tester calibration for the second time or if you doubt the results
of the conducted ‘Calibration’ operation, it is recommended to perform ‘clear cal.’ Operation.
To clear calibration correction introduced independently, perform the following steps:
•
select the scale
•
enter ‘Calibration’
•
enter the code;
•
Push
Î
button
NOTE
: By performing the Clear Cal, the unit will automatically default to the factory preset calibration.