3 |
2
.
Sound velocity selection and adjustment
.
Press “VEL” key to enter the sound velocity interface, press again, you can now select the velocity data by
pressing or the word “VEL” will be blinking on the display. If you need to adjust the sound velocity,
press the “VEL” key once more, the “VEL” and “m/s” will keep blinking. Then increase or decrease the sound
velocity to the number you want by pressing or again. The data will be automatically stored into the
current sound velocity memory unit. After this, press to confirm new sound velocity and the icons will stop
blinking.
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 each 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
Good coupling measurement
Measurement accomplished
velocity adjustment
velocity revision
