Zeroing The Probe - Elcometer 500 User Manual

12 ZEROING THE PROBE

The 'Zero Probe' procedure is part of the calibration process however,
a probe zero can be performed at any time to check that there is
sufficient probe tip oil on the sensor plate and the condition of the
probe tip.
12.1 BEFORE YOU START
1 Clean the probe surface of any couplant residue.
2 Connect the probe - see Section 4.4 on page en-6.
3 Switch the gauge on - see Section 4.3 on page en-5.
12.2 TO ZERO THE PROBE
1 Press Menu/Calibration/Zero Probe.
2 Hold the (clean) probe in free air and
press 'Zero' (Figure 24).
If the signal strength indicator is not
green: The user will be prompted apply
probe tip oil. Apply oil to the sensor plate,
see Section 4.6 on page en-7, press 'Ok'
and repeat Step 2 above.
If the signal strength indicator is green and the probe tip wear is
less than 0.7mm: The zero probe procedure will complete and the
gauge will revert to the reading screen (or calibration screen if zeroing
as part of the calibration procedure).
If the signal strength indicator is green and the probe tip wear is
greater than 0.7mm but less than 1mm: The user will be prompted
to check the probe tip for wear or damage. After inspection, the user
can choose to continue with the current probe tip or fit a new tip
(recommended), see Section 4.5 on page en-6. Press 'Ok' to
complete the zero probe procedure and revert to the reading screen
(or calibration screen if zeroing as part of the calibration procedure).
If the signal strength indicator is green and the probe tip wear is
greater than 1mm: The user will be prompted to replace the probe
tip. Replace the probe tip, see Section 4.5 on page en-6, press 'Ok'
and repeat Step 2 above.
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Figure 24
en-24