User manual

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After measuring, remove the sensor and turn off the DMM.
If no temperature sensor is connected, the ambient temperature of the DMM can be displayed via a short-
circuit jumper across the two measuring sockets “COM” and “°C”. Since the sensor is inside the housing, the
display will react to temperature uctuations very slowly. This function helps you control the correct operating
temperature after storage. For quick measurements, an external sensor must be used.
j) Contact-Free AC Voltage Recognition (NCV)
This function is not admissible to determine voltage freeness in electrical systems. For this, a
2-pole contact measurement must be performed at all times.
The NCV function (“non-contact-voltage detection”) leads to contact-free detection of the presence of an alternating
voltage in electrical conductors. The NCV sensor (19) is attached at the front of the meter.
A possible alternating voltage is displayed acoustically and with 4
bars in the display. The sound sequence and the number of bars
increases with increasing voltage. The display shows the letter
abbreviation “EF” for “electromagnetic eld” without voltage
detection.
- Remove all measuring lines from the meter. This function needs
no measuring lines.
- Turn the DMM on and select measuring function “NCV”.
- Move the meter with the front to a known AC voltage source.
Always perform this test to avoid wrong detection. The meter
starts to beep if there is an alternating voltage.
- Perform the test at the intended line, etc.
- Switch off DMM after completing the test.
The highly sensitive NCV sensor may also cause a voltage
recognition at static charge. This is normal and not a
malfunction.