Selecting The Voltage; Calibration Test - Elcometer 270 Guia Del Usuario

3 GETTING STARTED (continued)

3.4 SELECTING THE VOLTAGE

The Elcometer 270 is capable of testing at three voltages, depending
on model;
Part Number: D270----3; 9V and 90V
Part Number: D270----4; 9V, 67.5V and 90V
The LED for the voltage selected is illuminated ( c). Press the on/off
key to change the voltage. The detector will emit an audible signal
and change to the next voltage.
 9V: Suitable for coatings up to 300μm
(12mils) thick.
 90V: Suitable for coatings up to 500μm
(20mils) thick.
 67.5V: The US standard test requirement.
The voltage selected is retained when the
detector is switched off. When switched on
again, the voltage is set to the retained value.

3.5 CALIBRATION TEST

When the Elcometer 270 is switched on, or after changing voltage, the
unit will test the calibration of the internal voltage and sensitivity
setting. This test takes approximately four seconds.
During the test, the voltage indicator LED ( c) flashes slowly and then
quickly. At the end of the test, the LED remains permanently
illuminated and the detector emits a loud double bleep to indicate a
successful test.
In the unlikely event that the detector does not achieve a successful
internal calibration test, replace the batteries - see Section 3.1 'Fitting
the Batteries' on page en-3.
If fitting new batteries does not result in a successful calibration
test, contact Elcometer or your local supplier in order to restore the
correct calibration of the detector.
www.elcometer.com
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