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TO-BA-e-2020
5.4.3 Two-point calibration
Note:
This method requires two known thickness points on the test piece, which are
representative for the range to be measured.
1. The "
Probe
Zero" function must first be performed on the standard plate of the
instrument.
2. Apply the coupling agent to the test sample.
3. Press the transducer against the sample at the first / second calibration point
and ensure that the transducer is flat against the surface of the sample. The
display should show a (possibly incorrect) thickness value and the link status
indicator should be steady.
4. After you have achieved a stable measured value, remove the transducer. If the
displayed thickness differs from the value displayed during transducer coupling,
repeat the step in section 3.
5. Press the or
key to
display the Input Nominal
Thickness
dialog box. See
the figure at the right.
6. Press F1 / F2 and or
to enter the thickness value until it matches the
thickness of the sample. Then press
to calibrate the second point (see the
following figure):
