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5.3
Metrological self-check
Inclinometers ZET 7154 have a function of metrological self-check.
A reference signal is applied to the sensing element of the inclinometer in order to imitate the
change of tilt angle at a particular value.
The deviation of the measured value from the reference one is used to evaluate the
metrological reliability of the inclinometer.
In the case of regular metrological self-check of the inclinometers (at least once per 12 month)
it is possible to increase the calibration interval in 5 times.
The tab “Testing” (
Figure 5.3
) is used for metrological self-check performance.
Figure 5.3 “Testing” tab
Self-check procedure: sequence:
1.
Mount the inclinometer at a horizontal surface.
2.
Enter the measured value in the Tabs “Axis X” and “Axis Y” (initial readings).
3.
Enter the tab “Testing”, select “Measurement” in the list of tests and save the measurement
results.
4.
Check the current measured value in the tabs “Axis X” and “Axis Y”. The new readings
should more than the initial readings by 17-30 degrees – in this case, the metrological self-check
shall be considered to be passed.
5.
To disable the self-check mode, select the “off” option in the list of tests in the “Testing”
tab, or switch-off the power supply of the inclinometer.
