Hioki FT3151 - Settings for 2-Pole Measurement; Battery Check

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Measuring Earth Resistance Simply
(Simplied Measurement, 2-Pole Measurement Method)
Settings for 2-pole measurement
Set the Poles selector to 2.
Setting the measurement frequency
Select the measurement frequency between 575 Hz and 600 Hz by
switching the Hz selector. Usually, set the frequency to 575. If the needle of
the galvanometer uctuates during measurement, set the frequency to 600.
Switching the measurement frequency enables the instrument to be less
affected by a harmonic earth voltage.
Battery check
Set the range selector to the mark
, press the MEASURE button, and
check if the needle of the galvanometer
rests within the range of the mark
. Perform this check in the
actual measurement condition with the
measurement leads already connected.
If the needle of the galvanometer does not reach the range of
the mark
, replace the batteries with fresh ones. See “4.2
Inserting/Replacing Batteries” (p. 52).