User Manual

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5.3 Calibration:
Long press on the“CAL/CLR” key until 4.00 appears with “CAL” flashing at the bottom. Take 4.00
standard calibrating piece at the 5900m/s until the “CAL” disappears.
5.4 Sound speed measuring:
How to determine the sound speed of a certain material with piece of given depth: Measure the
depth of the material with caliber or micrometer. Select a preset speed close with the measured and
couple the sensor with the block with given thickness until a value is given, remove the
sensor and adjust the value with Up or Down key to make it equaling with the actual thickness
value. Press the “CAL /CLR” key to display the measured speed and save the value to the current
unit automatically. The thickness must be sufficient for measuring that is at least 25.0mm.
Calibration window
Measuring the thickness
Measuring the speed