Function ：

Two three four-wire measure grounding resistance, soil resistivity;

Ground voltage, AC voltage measurement

Ambient temperature and humidity ： 23℃±5℃，below 75%rh

Power ： 8.4V lithium battery (built-in)

Interference voltage ： <20V (should be avoided)

Interference current ： <2A (should be avoided)

Measure R electrode spacing ： a＞5d

Measured electrode spacing ： a＞20h

Auxiliary ground resistance ： Reference condition <100Ω, working condition <5kΩ

Range ：

Grounding resistance: 0.00Ω～30.00kΩ

Soil resistivity: 0.00Ωm～9999kΩm

Grounding voltage: 0.00V～100.0V

measurement mode ： Precise four-wire、 three-wire measurement, simple two-wire measurement

Measurement methods ：

Grounding resistance: rated current change pole method

Soil resistivity: four-pole method

Ground Voltage: Average Rectification(between S-ES interface)

Test frequency ： 128Hz

Short circuit test current ： > 20mA (Sine Wave)

Open circuit test voltage ： AC 28V max

Electrode spacing range ： Can be set 1m ～ 100m

Change gear ：

fully automatic shifting 0.00Ω ～ 30.00kΩ

fully automatic shifting 0.00Ωm～9000kΩm

Backlight ： Controllable gray screen backlight, suitable for use in dim places

Display mode ： 4-bit large LCD display, gray screen backlight

Measurement instructions ： LED flashing indicator during measurement

LCD size ： 111mm×68mm

LCD display field ： 108mm×65mm

Instrument size ： L/W/H：277.2mm×227.5mm×153mm

Standard test line length ： 4 strips：red 15m，black 15m, yellow 10m，green 10m each one

Simple test line ： 2strips：yellow 1.6m，green 1.6m each one

Auxiliary Grounding rod ： 4PCS：φ10mm×200mm

Measure time ：

Ground voltage：about 3 times/sec;

grounding resistance、soil resistivity: about 7 seconds/time

Line voltage ： Measurement below AC100V (ground voltage measurement function cannot be used to measure commercial power)

USB interface ： With USB interface, software monitoring, storage data can be uploaded to the computer, save and print

Communication Line ： One USB communication line, 1.5m long

Data storage ： 500 groups, "MEM" storage indicates, flashing "FULL" symbol indicates that the memory is full

Data review ： Data review function: "MR" symbol display

Overflow display ： Over-range overflow function: "OL" symbol display

Interference test ： Automatic identification of interference signals, "NOISE" symbol indication when the interference voltage is higher than 5V

Auxiliary grounding test ： With auxiliary ground resistance test function, 0.00KΩ ~ 30kΩ (Rh max = 3kΩ +100R <50kΩ; Rs max = 3kΩ +100R <50kΩ)

Alarm function ： Alarm when the measured value exceeds the alarm setting value

Battery voltage ： Real-time display of battery power, reminding timely charging when battery voltage is low

Automatic Shutdown ： “APO” Indicates, automatic Shutdown After 15 Minutes

Power consumption ：

Standby: 40mA Max(Backlight off)

Turn on backlight: about 43mA

measuring：75mA Max(Backlight off)

Weight ：

Instrument： 2450g(including battery)

Test lines：1300g

Auxiliary grounding rod： 850g(4PCS)

Working temperature and humidity ： -10℃～40℃；below 80%rh

Storage temperature and humidity ： -20℃～60℃；below 70%rh

Overload protection ： Grounding resistance：AC 280V/3 seconds between H-E and S-ES ports

Insulation resistance ： 20MΩ以上(500V between circuit and housing)

Pressure resistance ： AC 3700V/rms(between circuit and housing)

Electromagnetic properties ： IEC61326(EMC)

Suitable for safety regulations ：

IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level2)；

IEC61010-031；

IEC61557-1(grounding resistance)；

IEC61557-5(soil resistivity)；

JJG 366-2004.