Elma Instruments 5706445410286, Руководство пользователя

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Elma BM 251s-257s side 28
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A, mA, and A Current functions
Press SELECT button momentarily to toggle between DC and AC . Last selection will be saved as power
up default for repeat measurement convenience.
*Note: When measuring a 3-phase system, special attention should be taken to the phase-to-phase
voltage which is significantly higher than the phase-to-earth voltage. To avoid exceeding the voltage
rating of the protection fuse(s) accidentally, always consider the phase-to-phase voltage as the working
voltage for the protection fuse(s).
Electric Field EF-Detection
At Volt or Current function, press the EF button for one second or more and release to toggle to EF-
Detection feature. T
he meter displays “E.F.” when it is ready. Signal strength is indicated as a series of
bar-graph segments on the display plus variable beep tones.
●
Non-Contact EF-Detection:
An antenna is located along the top-right end of the meter, which
detects electric field surrounds current-carrying 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 the Red (+) test probe for direct contact measurements.