11
Sound Velocity Measurements of a Material with a
Known Thickness
The sound velocity of a material can be measured using a test piece with
a known thickness. Select a test piece with a minimum wall thickness of
20.0mm. Turn off the minimum capturing function (see
System Setup
section for details) prior to taking measurement.
1. Measure the test piece with a caliper or micrometer to confirm
the thickness.
2. Apply coupling gel on the material, place the sensor firmly against
the desired measurement area.
Note
: For most applications a single droplet of coupling gel is sufficient.
3. Remove the ultrasonic sensor from the measurement area and
adjust the measuring display until the actual thickness is met by
pressing the
and
buttons and press the
button to confirm
your selection.
4. The LCD will display the sound velocity.
5. Press
the
button to save the value if applicable.
Sound Velocity Calibration
1. Start by performing a zero calibration to the ultrasonic sensor.
2. Measure the actual thickness of the test piece with a caliper
or micrometer.
3. Select a sound velocity from the pre-loaded list (choose any one).
4. Apply coupling gel on the material, place the sensor firmly against
the desired measurement area.
Note
: For most applications a single droplet of coupling gel is sufficient.
5. The LCD will display a measurement reading of the test piece.
Note
: The reading will be off as the sound velocity is not correct.
6. Remove the ultrasonic sensor from the test piece, go into the
velocity interface by pressing the
button and increasing the
current sound velocity a little at a time by pressing the
button.
continued...
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