| Function |
Grounding resistance, loop resistance, conduction resistance and equipotential connection resistance test; soil resistivity and AC voltage test. |
| Power |
DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) |
| Back light |
Controllable white screen backlight, suitable for use in dark field. |
| Testing method |
precision 4 wire 3wire testing, simple 2 wire test grounding resistance |
| Measure method |
Earth Resistance: rated current change-pole method, measurement current 20mA Max |
| Soil Resistivity: 4-pole measurement (Wenner method) |
| Earth Voltage: average rectification(between P(S)-ES) |
| Range |
234 wire method for measuring ground resistance (R)：0.000Ω～30000Ω |
| Soil resistivity (ρ)：0.00Ωm～9000kΩm |
| Grounding voltage：AC 0.0～100.0V |
| Max. resolution |
234 wire method for measuring ground resistance (R)：0.001Ω |
| Soil resistivity (ρ)：0.01Ωm |
| Grounding voltage：0.1V |
|
Accuracy
|
234 wire method for measuring ground resistance (R)：
1．0.000Ω～10.00kΩ: ±2%rdg±5dgt
2．10.0K~100.0kΩ: ±3%rdg±5dgt
3．100.0K~200.0kΩ: ±3.5%rdg±5dgt |
| Soil resistivity (ρ)：depends on R accuracy
（ρ=2πaR a:1 m～100m；π=3.14） |
| Grounding voltage： ±2%rdg±3dgt |
| testing voltage wave shape |
sine wave |
| Testing frequency |
412Hz、825Hz、1280Hz(Automatic frequency selection) |
| Short circuit test current |
AC 20mA max |
| Open circuit test voltage |
AC 90V max |
| Electrode spacing |
1m～100m |
| Shift |
Grounding resistance：0.000Ω～200kΩ Full automatic shift |
| Soil resistivity：0.00Ωm～9999kΩm Full automatic shift |
| LCD |
6-bit LCD display, white screen backlight |
| LCD size |
128mm×75mm |
| LCD display size |
124mm×67mm |
| Testing indication |
LED flashing indication in measurement.LCD count down.Progress bar chart indication |
| charging indication |
When charging, the indicator on the charger is bright red, full of bright green. |
| size |
Host machine：Length Width Height 320mm×275mm×145mm |
| Outer size：Length Width Height 400mm×245mm×335mm |
| test time |
Ground voltage：approx 2times/sec；ground resistance：approx 7times/sec；soil resistivity：approx 7times/sec |
| test times |
5000times above ( short circuit test, test 1 time,Stop for 30 seconds and retest. ) |
| circuit voltage |
AC 600V below test |
| communication port |
With RS232 interface, storage data can be uploaded to the computer and saved to print. |
| communication wire |
RS232 communication wire 1pcs, length 1.5m |
| Data HOLD |
The “HOLD” symbol indicates data is kept. |
| data save |
2000 SET，“MEM”Storage instructions，display “FULL”Indicates that the storage is full. |
| overflow display |
Exceeding measuring range overflow function: “OL” icon display |
| Interface test |
Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V |
| auxiliary grounding test |
Can measure auxiliary earth resistance, 0.00KΩ-30000Ω(100R+rC<50kΩ, 100R+rP<50kΩ) |
| Alarm function |
When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint |
| battery voltage |
When low battery , battery voltage low icon will display, reminding to charging battery. |
| Automatically power off |
Turn off automatically after standby 15 minutes. |
| working current |
Standby: about 25mA (Backlight shut off)；
backlight：25mA Max(only backlight consumption)；
Measurement: about 150mA (Backlight shut off) |
| weight |
Host machine：2.66kg(with battery) |
| Total weight：6.88kg(with package) |
| Tool box |
The military toolbox is designed to support 200kg. |
| Overload protection |
Measure ground resistance ：C(H)-E、P(S)-ES between each port AC 280V/3sec |
| Insulation resistance |
20MΩ above(between circuit and shell 500V) |
| Withstand voltage |
AC 3700V/rms(between circuit and shell) |
| Electromagnetic features |
IEC61326(EMC) |
| Protection type |
IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution class2)；
IEC61010-031；IEC61557-1(ground resistance)；IEC61557-5(soil resistivity)；JJG 366-2004(ground resistance meter)。 |
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