| 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 | 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(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 level 2)； IEC61010-031； IEC61557-1(grounding resistance)； IEC61557-5(soil resistivity)； JJG 366-2004. |
