Manual
18
8.4
Print setup
Here you can print out all measured data or certain data slot. This works just as deletion or part-deletion
works.
9
Calibration
9.1
Reasons to calibrate
-
If the readings are stable in the process of reviewing the durometer with the reference block, but
the nominal value of the reference hardness block is different.
-
After a long storage (more than 3 month)
-
After intense using (more than 200.000 measures with the probe
-
When operating conditions have changed considerably (ambient temperature, humidity)
9.2
Preparations
For a Rockwell C (HRC) calibration you need two different calibration standards:
-
25 ± 5 HRC
-
65 ± 5 HRC
Note: If you do not use the whole measuring range of Rockwell C (e.g. only from 20 … 40 HRC) you may
also use a 25 ± 5 and 45 ± 5 HRC calibration standards. The same goes for Vickers.
Note: In special cases, only one block per calibration is necessary.
9.3
Calibration procedure
9.3.1
Calibration with two calibration standards
Press “MENU” in the main menu. Move to “test setup” and choose the “Calibration setup”. Insert the
pa
ssword (“888888” is the preset standard) and press “ENTER”. You will now see the following display:
Choose by using the arrow keys one free storage slot.
Then press “MAT”. Now you need to perform six
measurements on the soft calibration standard. After
doing so the mean value will be shown at “TEST-L”.
Press “MAT” again and the right-arrow key afterwards. Now you have to make six measurements on the
harder block. The mean value will be displayed at “TEST-H”.
Now press the “MENU” key to enter the nominal value of the calibration standards. Use the arrow keys to
do so. With the “SCALE” key you can set how much the value should be increased or decreased. Press
“MENU” to finish the calibration. The new settings are saved and will be set automatically.
Note: If there is an arrow upwards or downwards displayed during the calibration, the measured value is
above or below the hardness scale.
