5-4 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Operation Calibrating the instrument
– Press m until the function VEL is displayed.
– Simultaneously press d u.
The unit is switched over. The displayed value is con-
verted.
5.2 Calibrating the instrument
Before you are able to measure the thickness you
must calibrate the instrument on the material to be
tested.
You have the following possibilities:
• Sound velocity of the material is known; 1-point
calibration is automatically carried out
• Sound velolcity is unknown; 1-point calibration with
a calibration block of known thickness
• 2-point calibration with precision measurements
within a narrow thickness range using a calibraton
block having two known thickness steps (or two
corresponding calibration blocks).
H Note:
You need not calibrate the instrument to the connected
probe because the instrument automatically carries
out a zero point compensation. This applies to all
types of probes in Chapter 2, Scope of supply and
accessories.
5-4 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Operation Calibrating the instrument
– Press m until the function VEL is displayed.
– Simultaneously press d u.
The unit is switched over. The displayed value is con-
verted.
5.2 Calibrating the instrument
Before you are able to measure the thickness you
must calibrate the instrument on the material to be
tested.
You have the following possibilities:
• Sound velocity of the material is known; 1-point
calibration is automatically carried out
• Sound velolcity is unknown; 1-point calibration with
a calibration block of known thickness
• 2-point calibration with precision measurements
within a narrow thickness range using a calibraton
block having two known thickness steps (or two
corresponding calibration blocks).
H Note:
You need not calibrate the instrument to the connected
probe because the instrument automatically carries
out a zero point compensation. This applies to all
types of probes in Chapter 2, Scope of supply and
accessories.
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