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4.5
Selection of display backlight mode
By successive pressing of
mode:
- "Auto" – the backlight will illuminate when the gauge is actually making a
measurement;
- "On" – this mode will be displayed when the backlight is set to stay on;
- "Off" – this mode will be displayed when the backlight is switched off.
Note - It should be borne in mind that the selected display backlight mode
affects the continuous operation time of the thickness gauge.
4.6
Zero calibration
ATTENTION!
Zero calibration (time compensation of ultrasound propagation in the
transducer wedge) is important for correct thickness measurement. If the gauge is
not "zeroed" correctly, all measurements the gauge makes will be erroneous by some
fixed percentage. When the UTG-8 is "zeroed", this fixed error value is measured and
automatically corrected for in all subsequent measurements.
For zero calibration, please perform the following actions:
1)
Plug an appropriate transducer into the thickness gauge using the
connecting cable.
2)
Switch the thickness gauge ON by pressing
3)
Apply a few droplets of couplant onto the built-in 5mm thick probe disc
(Fig. 4).
4)
Press the transducer against the probe disc, making sure that the
transducer sits flat against the probe disc surface. The display should show some
thickness value, and the Stability Indicator should have nearly all its bars illuminated.
button, select the desired display backlight
Fig. 7
16
button.
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