5. Equipment calibration checking
By using a standard resistance (
Rx
), it is possible to test the equipment
calibration. The resistance must be connected to the
EM-4058
as shown
below:
After connecting the resistance, follow these procedures:
·
Turn the
EM-4058
on (
).
·
Select the resistivity function (
).
·
In the
distance / standard resistance
selection function, choose
Rx
(nominal standard resistance).
·
Press the
key.
·
After 5 seconds, a stable value close to the standard resistance’s
nominal value should appear on the display.
·
If this is not the case, the equipment accuracy is out of its
specification and must be adjusted by a qualified laboratory.
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