Courtesy of Electromatic/Checkline
NOTE: This procedure requires two samples with ”known”
thickness values are available during this calibration. The two samples should
be at the high and low portions of the expected range thickness that will be encountered.
1. Turn on the gauge.
2. Perform a Probe-Zero
3. Apply couplant to the sample piece.
4. Press the transducer against the sample piece at
the first/second calibration point, making sure that the transducer sits flat
against the surface of the sample. The display should show some (probably
incorrect) thickness value, and the Stability Indicator should have nearly all
its bars on.
5. Having achieved a stable reading, remove the
transducer. If the displayed thickness changes from the value shown while the
transducer was coupled, repeat step 4.
6. Press the CAL key. The IN (or MM) symbol should
7. Use the UP and DOWN arrow keys to adjust the
displayed thickness up or down until it matches the thickness of the sample
8. Press the PROBE-ZERO key. The display will flash
1OF2. Repeat steps 3 through 7 on the second calibration point.
9. Press the PROBE-ZERO key again and the display
will now show the sound velocity value it has calculated based on the two known
thickness values that were entered.
10. The gauge is now ready to perform measurements
within this range on that material.