2.0 INTRODUCTION.
The Elcometer 136 DC Portable Holiday Detector detects flaws
on non-conductive coatings which are applied to conductive
substrates. The coating should be at least 200 microns (0.008")
and preferably over 500 microns (0.020") thick.
The Elcometer 136 is earthed to the substrate and passes a
high DC voltage through a probe to the coating surface. When
the probe passes over a coating flaw the electrical circuit is
completed. The Elcometer 136 gives an audible and a visual
alarm and may produce a spark at the flaw.
3.0 EQUIPMENT IDENTIFICATION.
3.1 Control Panel.
Figure 2 - Control Panel Layout
1. - LCD display of output voltage
2. Voltage Voltage control
3. ALARM Visual alarm (illuminates when flaw detected)
4 ON Press to switch on
5. OFF/Test Press to switch off. Press again for tests
6. Sensitivity Sensitivity control for alarm
7. - Battery level indicator
High Voltage DC
Holiday Detector
Voltage
Sensitivity
ON
OFF
Test
À
Á
Â
Ã
Ä
kV
Batt
F
E
Æ
3
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