1. Import FFT (fast fourier transform) technology, AFC (automatic frequency control) technology, with unique anti-interference ability and environment adaptability, with strong retest consistency.
2. The host equip with large LCD display, with white backlight and bar graph indication, clear and
obvious.
3. Equip with USB interface, data upload function, storage data can upload to computer save and
print.
4. Audible and visual alarm and overload protection function.
1.Basic error and performance indicator under reference condition
Measurement Function | Measuring range | Accuracy | Resolution |
Earth Resistance(R) | 0.00Ω~30.00Ω | ±2%rdg±3dgt | 0.01Ω |
30.0Ω~300.0Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω~3000Ω | ±2%rdg±3dgt | 1Ω | |
3.00kΩ~30.00kΩ | ±4%rdg±3dgt | 10Ω | |
Soil Resistivity (ρ) | 0.00Ωm~99.99Ωm | (ρ=2πaRa:1 m～100m;π=3.14) | 0.01Ωm |
100.0Ωm~999.9Ωm | 0.1Ωm | ||
1000Ωm~9999Ωm | 1Ωm | ||
Soil Resistivity (ρ) | 10.00kΩm~99.99kΩm | (ρ=2πaRa:1 m～100m;π=3.14) | 10Ωm |
100.0kΩm~999.9kΩm | 100Ωm | ||
1000kΩm~9000kΩm | 1kΩm | ||
Earth Voltage | AC 0.0~600V | ±2%rdg±3dgt | 0.1V |
2.General Specifications
Power Supply | DC 9V (alkaline dry battery LR14 1.5V 6 sections) |
Display Mode | 4-digit max LCD display, white screen backlight |
Measurement Instruction | The LED flash during the measurement, the LCD count backward, and the progress bar chart indicate |
LCD Display Domain | 124mm×67mm |
Backlight | Controllable white screen backlight, suitable for use in dim place |
Measurement Range | Earth resistance: 0.00Ω~30.00kΩ |
Soil Resistivity: 0.00Ωm~9000kΩm | |
Earth Voltage: 0V~600V | |
Measurement | Precision four, three-wire measurement, simple two-wire measurement method to measure earth resistance |
Measuring Method | Earth resistance: rated current transformer method, measuring current 20mA Max |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Test Current | ＞20mA(Sine wave) |
Open Circuit Test Voltage | AC 40V max |
Test Voltage Waveform | Sine wave |
Electrode Spacing Range | Range can be set 1m~100m |
Measurement Range Gear Shift | Earth Resistance: 0.00Ω~30.00kΩ Fully automatic shifting |
Soil Resistivity: 0.00Ωm~9000kΩm Fully automatic shifting | |
Standard Test Line | 4 pieces: red 20m, black 20m, yellow 10m, green 10m each 1 piece |
Simple Test Line | 2 pieces: red 1.6m, black 1.6m each 1 piece |
Auxiliary Earth Rod | 4 pieces:φ9mm×230mm |
Measurement Time | Earth voltage: about 3 times/second |
Earth resistance, soil resistivity: about 15 seconds/time | |
Number of measurement | More than 5000 times (short circuit test, test once, stop for 30 seconds and then test) |
Line Voltage | Measurement below AC 600V |
Communication Interface | With USB interface, software monitoring, storage data can be uploaded to the computer, saved and printed |
Memory | 300 groups, flashing "FULL”symbol indicates that the storage is full |
Data Hold | Data holding function: “HOLD" symbol display |
Data Access | Data access function: “READ" symbol display |
Overflow Display | Over-range overflow function: “OL" symbol display |
Interference Test | Automatically identify the interference signal, and the “NOISE” symbol indicates when the interference voltage is higher than 5V |
Auxiliary Earth Test | With auxiliary earth resistance value test function,0.00KΩ~30kΩ(100R+rC<50kΩ,100R+rP<50kΩ) |
Alarm Function | When the measured value exceed the alarm set value,“Du-Du-Du-" Alarm prompt |
Alarm Threshold Setting Range | Resistance:0Ω~9999Ω,voltage:0.0V~600.0V |
Battery Voltage | When the battery voltage drop to about 7.5V, the low battery voltage symbol flashes to remind you to replace the battery. |
Working Current | Standby: about 20mA (backlight off) |
Power on when turn on backlight: about 45mA (turn off the backlight 25mA) | |
Measurement: about 100mA (backlight off) | |
Tester Size | 215mm×178mm×83mm |
Weight | Tester: About 1330g; total weight: about 4.5kg (include packaging) |
Overload Protection | Measuring earth resistance: AC 280V/3 seconds between C(H)-E,P(S)-ES ports |
Insulation Resistance | Above 20MΩ(500V between the circuit and the housing) |
Withstand Voltage | AC 3700V/rms(between circuit and housing) |
Electromagnetic Characteristics | IEC61326(EMC) |
Suitable Safety Regulation | IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2);IEC61010-031;IEC61557-1(Earth resistance);IEC61557-5(Soil resistivity);JJG 366-2004 |
Working Temperature & Humidity | -10℃~40℃; below 80%RH |
Storage Temperature & Humidity | -20℃~60℃; below 70%RH |
