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6.MEASURING METHODS
1. Battery voltage check
a. Before testing, press the "ON/OFF" button, when the "Battery: Low" appears
on the display, replace with new batteries.
b. Prior to measuring, if "Battery: Low" appears on the display, replace with
new batteries.
2. Earth voltage check
a. Test leads connection.
Earth Va measurement
Earth electrode (rod) under test
b. Press the "ON/OFF" button, "ACV" button and "TEST/STOP" button, earth
voltage will be displayed on the LCM. When the earth voltage is more than 1OV
It may result in errors in earth resistance measurement. Make sure that the
indicated value is less than 1 OV.
3. Earth resistance measurement
The measured results may be influenced by induction if measurements are
made with the Test Leads twisted or connected each other. When connecting
the Probes, they should be separated.
a. Test leads connections.
Four-terminal earth resistance measurement
Earth electrode
(rod) under test
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Test spike
Potential Current
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Manual de usuario AD4234
AD Instruments
17
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