Locking The Calibration - Model T - Elcometer 500 User Manual

10 CALIBRATING YOUR GAUGE (continued)
3 Place the probe on to the coated
sample, ensuring that it is flat against
the surface. The display will show a
thickness value which is constantly
updating (Figure 21).
The stability of the reading is indicated on the

signal strength indicator to the right of the
display. If the signal strength indicator is
green, it is a valid and stable reading. If not
green, ensure there is an adequate film of
couplant beneath the probe and that the
probe is seated flat against the surface.
Alternatively, position the probe nearby on a
different area of the test surface until a strong
signal is received.
4 Remove the probe from the coated sample. The last reading is
held on screen. If not representative, repeat Steps 2-3.
Excessive use of couplant can result in a distorted reading when the probe is

removed from the surface. If this occurs, clean the probe tip and coated
surface, then repeat Steps 2-3.
5 Press 'Validate' to retain the existing calibration but refresh the
associated time and date of calibration to the current time and
date, 'Cal' to re-calibrate the gauge or 'Ok' to exit the test
calibration procedure.

10.8 LOCKING THE CALIBRATION - MODEL T

Using the 'PIN Lock' feature, the calibration settings can be 'locked',
preventing the user from making any changes to the calibration without
first disabling PIN lock.
Users can still test the calibration via Menu/Calibration/Test Calibration
when 'PIN Lock' is enabled, but are unable to validate or re-calibrate
the gauge.
For more information on 'PIN Lock', see Section 13 'PIN Lock -
Model T' on page en-25.
en-21
R
Figure 21
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