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TN_US-BA-e-2020
4.3.1 Calibration with known material thickness
Note: This procedure requires a sample of the material to be measured, the exact
material thickness of which, e.g. on any
species was measured before.
1. The zero setting is made.
2. The sample material is provided with coupling gel.
3. The ultrasonic probe is pressed onto the piece of material. A material thickness
value is now read on the display and the coupling symbol appears.
4. As soon as a stable reading value is reached, the ultrasonic probe is lifted off
again. If the thickness of the material just detected changes from the value that
existed during coupling, step 3. must be repeated.
5. The key is pressed and thus the calibration mode is activated. The MM (or IN)
symbol should start flashing.
6. With the and keys you
can now adjust the required material thickness (that
of the material pattern).
7. The key
is pressed again and the M/S (or IN/ µS) should start flashing. The
display will now show the sound velocity value previously calculated based on
the material thickness.
8. To exit the calibration mode, press the key to return to the measuring mode.
From now on measurements can be made.
