Hioki FT3151 - Page 80

16
Parts Names and Functions
1
MEASURE button Starts the earth resistance measurement,
auxiliary earth resistance check, or battery
check.
2
Range selector Switches the function among the battery
check, earth voltage measurement, auxiliary
earth resistance check, and earth resistance
measurement.
3
Poles selector Switches the measurement method between
2-pole method (simplied measurement) and
3-pole method (precise measurement).
4
Hz selector Switches the measurement frequency
between 575 Hz and 600 Hz to reduce
effects of harmonic earth voltage.
5
Resistance dial Allows the operator to read the measured
resistance value.
6
Galvanometer Displays the value of current that ows
through the galvanometer during earth
resistance measurement.
7
Battery effective
range
Allows the operator to check if the battery
voltage is sufcient.
8
Auxiliary earth
resistance effective
range
Allows the operator to check if the auxiliary
earth voltage is favorable.
9
Earth voltage scale Allows the operator to read the earth voltage
value.
10
Dial knob Allows the operator to adjust the current
value owing through the galvanometer
during earth resistance measurement.
11
ADJUST Allows the operator to perform the zero
adjustment for the galvanometer
12
Measurement
terminal E
Connect the black cable.
13
Measurement
terminal S(P)
Connect the yellow cable.