current electrode, find the potential difference V between P(S)
voltage electrode and ES auxiliary earthing electrode, the potential
difference V divided by AC current I is earth resistance R, electrode
distance is a(m), then soil resistivity can be got according to formula
ρ=2πaR(Ωm). If the electrode distance of C(H)-P(S) is equal to
P(S)-ES (both is a) that is for wenner method. In order to simple the
calculation, please make electrode distance a far more than
embedding depth h, generally should meet a>20h, as shown below.
VI. Operation Methods
1．Switch On/Off
Rotate FUNCTION rotary switch to fulfill switch on and off. When
rotary switch button displays “OFF” for shut-off. The Tester has no auto
shut-off function, so please shut it off after usage in case of battery
consumption saving.
2．Battery Voltage Check
After switch on, if LCD displays low battery voltage icon “ ”，
which indicates that battery voltage is low, and please replace the
battery in compliance with instructions. Adequate battery power can
ensure the accuracy of measurement.
Rated Cu rrent Generator
Voltmeter
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