9
Note:
After every change of the probe, probe temperature, ambient
temperature changes, etc. After the work environment, or working for
some time after the discovery measurement errors should see the
standard test block measured value is accurate, if the difference would be
larger school Zero operation.
Calibrated display thickness may be bias 4.00 ± 0.02, now only shows the
calibration is complete instructions, without further calibration.
3.6 Measurement of sound velocity
The sound velocity of a material can be measured using a test piece with
given thickness. First, measure the test piece with caliper or micron
micrometer and read the thickness accurately. Couple the probe with the
test piece with given thickness till it displays a value, remove the probe,
then adjust the display to the actual thickness with
or
, press
,
now it will display the sound velocity to be measured. Save the value into
current sound velocity memory unit. For measuring sound velocity, one
must select a test piece with adequate thickness, and the recommended
min. wall thickness is 20.0mm. When measuring the sound velocity,
please turn off the min. capturing function.
For example: To measure the sound velocity of a material with a thickness
of 25.0mm, the procedure is:
