Using Velocity Entry - Elcometer 500 User Manual

10 CALIBRATING YOUR GAUGE (continued)

10.3 USING VELOCITY ENTRY

To calibrate the gauge using this method, the user must know the
sound-velocity of the coating material. If the sound-velocity is not
known, '1 Point' or 'Coating Material' Calibration can be used or
alternatively, the sound-velocity can be determined by using the
Elcometer 500 Coating Calibration Mould (CCM), see Section 11 on
page en-22.
1 Press Menu/Calibration/Cal Method and select 'Velocity Entry'. If
'Velocity Entry' is already selected, simply press
Menu/Calibration/Calibrate.
The calibration method currently selected is indicated by the icon to the right

of the display.
2 Enter the known sound-velocity using

the softkeys to select 0 to 9 and the

 softkey to move to the next digit,
followed by 'Set' to use the value
entered (Figure 16).
If the sound-velocity of the test coating is not

known, it can be determined by using the
Elcometer 500 Coating Calibration Mould
(CCM), see Section 11 on page en-22.
3 To ensure accurate and repeatable readings and check for probe
wear, the user will be prompted to zero the probe; clean the
probe surface, hold the probe in free air and press 'Zero'.
The 'Zero Probe' procedure is not only part of the calibration process, it can

also 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. See Section 12 'Zeroing
the Probe' on page en-24 for further information
At the end of the calibration procedure, the user is given the option to
save the coating calibration in the gauge memory for future use, see
Section 10.4 'Saving the Coating Calibration' on page en-19 for further
information.
The gauge is calibrated using the sound-
velocity entered which is then displayed to
the right of the measurement screen, below
the calibration method icon (Figure 17).
Pressing 'Escape' at any time will exit the
calibration procedure without calibrating the
gauge.
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Figure 16
Figure 17
en-18