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4. Press
.
On the display, MM (or IN) starts flashing on and off.
5. Use the
and
sample of material.
6. Press
again.
On the display, M/s (or IN/µs) starts flashing on and off.
The gauge now displays the sound velocity value it has calculated based on the thickness of the sam-
ple piece.
7. Press
to exit the calibration routine.
Your gauge is now ready to perform measurements.
Two-point Thickness Calibration: For improved accuracy over a smaller measurement range, conduct a
two-point calibration. For example, if the measurement range is 2.03 mm to 6.35 mm (.080" to 0.250"),
perform the first calibration on a known thickness sample close to 6.35 mm (.250"), followed by the second
calibration close to 2.03 mm (.080").
Note: Before you start this calibration procedure, perform a probe zero.
1. Physically measure an exact sample of the material or a location directly on the material to be meas-
ured using a set of calipers or a digital micrometer. Measure two samples/locations.
2. Apply a drop of couplant on the transducer and place the transducer in steady contact with the first
sample/location of the material being tested. Be sure that the reading is stable and the repeatability
indicator, in the top left corner of the display, is fully lit and stable.
arrows to adjust the displayed thickness until it matches the thickness of the
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