Calibration Check Loop - AEMC 3710 User Manual

Calibration Check Loop

The multiple calibration loop is now replaced by a single point 25 Ω loop
(Fig. 33). It is provided to perform a quick check of the instruments.
Check the clamp-on ground resistance tester by clamping around the
loop; the 3710 or 3730 should read between 24.2 Ω and 25.8 Ω.
* Value is for ambient temperature between 68° and 78°F. Value may differ a
few counts under or above this temperature.
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I N S T R U M E N T S
CALIBRATION LOOP 25Ω
Figure 33
32
Ground Resistance Tester Models 3710/3730