3 |
Code
Material
Sound Velocity (VEL)
FS
Iron/Steel
5900
AL
Aluminium
6320
CP
Copper
4700
bR
Brass
4430
Zn
Zinc
4170
TIN
Tin
3320
Pb
Lead (Pb)
2400
GL
Glass / Stainless Steel
5800
PVC
Polyvinylchloride
2390
PMM
Acrylic
2730
3
.
Calibration
If necessary this step should be repeated; Press the “ZERO” key for 2 seconds, after a short time “CAL” will
appear on the display, this indicates the unit is in calibration mode. Put a small amount of coupling gel on the
sample block and then place the probe on the sample block. When the display shows 4.0mm the calibration is
completed. After calibration the sound velocity will remain the same as previous selected. A calibration should
be made the every time the probe or batteries are replaced. This is very important to make sure measurements
will be accurate.
5
PERFORM A MEASUREMENT
5.1 Thickness measurement
Put some coupling gel on the material surface, press the ultrasonic probe on the material surface to measure.
Please make sure there is good coupling, which will be indicated with this symbol appearing on the display.
If this symbol does not appear or flashes it means there is not a good coupling. The reading on the display is the
measured value. After removing the probe, the reading will be held.
Calibration status
Calibration accomplished
Correct coupling
Measurement completed
