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The correctness of the above operation affects the measurement accuracy.
"Zero" calibration procedure is detailed in para. 6.6 of this Manual.
«
» - the CAL key serves to enter and exit the calibration mode. This mode
is used to adjust the ultrasound velocity value that will be applied for thickness
calculation. Calibration can be performed based on a known thickness, known
ultrasound velocity, or on two points.
The procedure of thickness gauge calibration with a known ultrasound velocity
is detailed in para 6.7 of this Manual.
The procedure of thickness gauge calibration with an unknown ultrasound
velocity is detailed in para 6.8 of this Manual.
The procedure of thickness gauge two-point calibration is detailed in para 6.9
of this Manual.
«
» - the IN/MM key is used to switch back and forth between metric and
inch units. This key may be used at any time, whether the gauge is displaying a
thickness (in or mm) or ultrasound velocity value (in/µs or m/s).
«
» - the UP arrow key has two functions. When the thickness gauge is in
calibration mode, this key is used to increase numeric values on the display. In
normal mode, this key takes the gauge into scanning mode.
Detailed description of the scanning mode can be found in para 7.7 of this
Manual.
«
» - the DOWN arrow key has two functions. When the thickness gauge is
in calibration mode, this key is used to decrease numeric values on the display. In
normal mode, it serves for setting up one of the three display backlight modes –
"Off" / "Auto" / "On".
"Off" will be displayed when the backlight is switched off.
In the "Auto" mode, the backlight will illuminate when the gauge is actually
making a measurement.
"On" will be displayed when the backlight is set to stay on.
7
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