METREL MD 9070 Manuel D'utilisation page 13

MD 9070 Insulation/Continuity Digital Multimeter Operation
Connect the probes together to show the residue resistance reading and then press the
ZERO button momentarily. The LCD will display a zero reading with the annuciator Δ
turns on. The residue resistance reading is then saved temporarily as offset value for
the that follows until a further function change or power off.
Insulation Resistance function
WARNING
The LCD icons used together throughout in this manual is referred as active
measurements of Insulation Resistance function through the activation of the TEST
button on the meter or on the Remote Probe. The sources a user selectable test
voltage of 50V, 100V, 250V, 500V or 1000V to measure Insulation Resistance values.
The in a flashing manner warns against test voltage is being output. Use extreme
caution when operating the to avoid electric shock.
is inhibited when the meter sounds 3-beeps and displays the detected voltage
value plus warning against energized circuit of more than 30V is being connected,
before the is active. Measurements shall only be carried out on parts of an
installation or equipment that are de-energized.
Connecting to energized circuits when the is active will produce false results and
may damage the instrument. Always check with voltage functions and remove power
from the circuits before carrying out the .
Setup as illustrated below.
Select an intended test voltage of 50V, 100V, 250V, 500V or 1000V. Turn the Rotary
Knob directly to select the intended voltage instead.
The secondary display shows the selected voltage for 1 second right after the selection,
and then displays the actual detected voltage readings. The voltage annunciator by the
secondary display remains indicating the voltage selected.
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