General Information; Measurement Setup - Gossen MetraWatt METRAOHM 413 Mode D'emploi

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4. Measuring and testing

4.1 General information

Pushbutton functions:

Switch-on/-off, self-test (3.)

Zero balance (4.3)

Measuring (4.4)

Zero balance (4.3)

Polarity reversal (4.4.1)

+/-

Automatic mode (4.4.2)

Call up measured values (4.4.2)

Any measurement line (up to approx. 3.5 Ω) can be

used between the reference earth (e. g. equipoten-

tial bonding conductor) and the METRAOHM 413,

which can be adjusted as described in section 4.3.

Measurement locations at distances over 100 m

can be reached. In environments with strong field

influences the circuit line should be reeled off com-

pletely, so that inductive influences can be avoided.

 Fix the measuring line to the reference earth

while ensuring good electrical conductivity

(remove any corrosion).

 Connect the free end of measuring line to the

lower socket of METRAOHM 413. When using the

uncoiling reel, the included short measuring line

must be plugged into the socket of the reel.

The safety cap can be dismounted (e.g. for 4 mm

sockets) by lifting the snap lock with a sharp object.

Only with mounted safety

cap on the test electrode

of the measuring line tests

in CAT III enviroments are

permitted in accordance

with EN 61010-031.

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