10
Preparing the Measurement Surface
1. Clean any dust, dirt or rust off the object, and remove any coating
such as paint.
2. Smooth the surface of the object by grinding or polishing it. You can
also use a coupling gel with a high viscosity.
Important Note
: In any ultrasonic measurement scenario, the shape and
roughness of the desired test material are of great importance. Rough,
uneven surfaces will prevent the ultrasonic sensor from seating properly
against the surface, thus limiting the penetration of ultrasound through the
material, resulting in unstable and therefore, unreliable measurements.
Taking Thickness Measurements
1. Set the sound velocity on the meter (see
Adjusting the Sound
Velocity
for details).
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. Verify that the coupling Indicator "
" appears on the LCD display.
4. Read the measurement on the LCD display.
5. When you remove the ultrasonic sensor the value will stay on the
LCD and the coupling indicator "
" will disappear.
6. Press the
button to save the measurement if applicable.
7. If the coupling indicator "
" does not appear on the display,
or the measured values appear to be erratic, verify that there is an
adequate amount of coupling gel in between the ultrasonic sensor
and the material under test. It is also important that the ultrasonic
sensor sits flat against the material.
Auto Power OFF
To preserve battery life, the meter is programmed to turn itself after
approximately 3 minutes of inactivity. To disable this option, please see
System Setup
section for details.
continued...
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