-4-
II
．
Technical Specifications
1. Working Conditions
Influence Description
Working
Conditions
Ambient Temp
15F
-
105F
Ambient Humidity
＜
80%
Working Voltage
9V±1.5V
Auxiliary Earth
Resistance
＜30kΩ
Interference Voltage
＜20V
Interference Current
＜2A
Electrode Distance
when measuring R
a
＞5d
Electrode Distance
when measuring ρ
a
＞20h
2. General Specification
Function
Measurement of 2/3/4-pole earth resistance, soil
resistivity, earth voltage, AC voltage
Power Supply
DC 9V(
6 High Quality Alkaline C Cells
1.5V
continuous standby for 300 hours )
Measurement
Range
Earth Resistance: 0
.00Ω-30.00kΩ
Soil Resistivity: 0.00Ωm-9000kΩm
Measuring
Modes
Precise 4-p
robe
measurement, 3-p
robe
measurement
and
simple 2-
probe
measurement
Measuring
Methods
Earth Resistance: rated current change-pole
method, measurement current 20mA Max
Soil Resistivity: 4-pole measurement
(Wenner
or Schlumberger Arrays)
)
Earth Voltage: average rectification(between P
(S)
-ES)
Test Frequency
128Hz/111Hz/105Hz/94Hz(AFC)
Short-circuit
Test Current
AC 20mA max
Open-circuit
Test Current
AC 40V max
Test Voltage
Wave
Sine wave
Electrode
Distance Range
Outside probes c
an be set
up to 330' apart .
Shift
Earth resistance: 0.00Ω-30.00kΩ, automatic shift
