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Automatic measurement up to 10 Ω
Tests with 200 mA and automatic polarity change
according to EN/IEC 61557-4
Attention!
First switch on the METRAOHM 413 and af-
terwards contact the measuring point with
the test electrode. Button
pressed thereby, otherwise the METRAOHM
413 can be damaged by external voltages.
1. Measurement setup:
Connect the insulated 4 mm-connector of the
the measuring line to the socket of the
METRAOHM 413.
Contact the reference earth with the test
electrode of the measuring line (e.g. by clamp).
2. Zero balancing:
The tester has to be switched off for zero
balancing.
Contact the test electrode of the METRAOHM 413
to the reference earth and ensure safe contact.
Press button
same time. The zero balance will be performed.
3. Select automatic measurement:
Hold button
up quickly and "AuTo" appears on the display.
4. Automatic measurement:
Shortly press button
measurement. The pole changing is carried out
automatically.
5. Querying of stored measured values + / - :
Press button
measured resistance value with + polarity and
– polarity.
External voltage warning
Acoustic warning and red LED for interference vol-
tage from 15 V to 400 V (voltage is displayed in V)
Continuity signal
An acoustic signal sounds for 2 seconds during
measurement for resistance values < 2 Ω.
30
and then the button
pressed until POL +/- LEDs light
+/-
to switch between the
+/-
.
may not be
to start automatic
at the
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