METREL MD 9231 Manual Del Usuario página 10

MD 9231 Industrial TRMS AC/DC Current Clamp Meter
 Non-Contact EF-Detection: An antenna is located along the top-right end of the stationary clamp jaw,
which detects electric field surrounds energized conductors. It is ideal for tracing live wiring connections,
locating wiring breakage and to distinguish between live or earth connections.
 Probe-Contact EF-Detection: For more precise indication of live wires, such as distinguishing between
Live and Ground connections, use one single probe to test via terminal COM for direct contact EF-
Detection with best sensitivity.
CAUTION & WARNING for Non-Invasive (Clamp-on) Current Measurements
CAUTION
(Application and Removal of the Clamp-on Jaws) For non-invasive current measurements, press the jaw
trigger and clamp the jaws around conductor(s) of only one single pole of a circuit for load current
measurement. Make sure the jaws are completely closed, or else it will introduce measurement errors.
Enclosing conductor(s) of more than one pole of a circuit may result in differential current (like identifying
leakage current) measurement. Align the conductor(s) to the Jaws center indicators (Regular or AmpTip™
indicators where applicable) as much as possible to get the best measuring accuracy. For removal, press the
jaw trigger and remove the jaws from the conductor(s).
Adjacent current-carrying devices such as transformers, motors and conductor wires may affect
measurement accuracy. Keep the jaws away from them as much as possible to minimize influence.
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Operation