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, with white backlight and bar graph indication which can reading clearly and obvious.
3. With Alarm and data storage function.
4. Data upload function, which can upload storage data to computer for saving and printing.
1.Basic Error & Performance Indicator Under Reference Condition
Measurement Function | Measuring Range | Accuracy | Resolution |
Two-three-four-wire Method To Measure Earth Resistance (Re) and DC resistance (R—) | 0.00Ω~29.99Ω | ±2%rdg±5dgt | 0.01Ω |
30.0Ω~299.9Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω~2999Ω | ±2%rdg±3dgt | 1Ω | |
3.00kΩ~30.00kΩ | ±4%rdg±3dgt | 10Ω | |
Selection Method To Measure Earth Resistance (Re) | 0.00Ω~29.99Ω | ±2%rdg±5dgt | 0.01Ω |
30.0Ω~299.9Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω~3000Ω | ±2%rdg±3dgt | 1Ω | |
Double Clamp Method To Measure Earth Resistance (Re) | 0.01Ω~0.99Ω | ±10%rdg±5dgt | 0.01Ω |
1.0Ω~29.9Ω | 0.1Ω | ||
30Ω~100Ω | 1Ω | ||
Soil Resistivity(ρ) | 0.00Ωm~99.99Ωm | Depending on the measurement accuracy of R(ρ=2πa Ra:1 m~100m;π=3.14) | 0.01Ωm |
100.0Ωm~999.9Ωm | 0.1Ωm | ||
1000Ωm~9999Ωm | 1Ωm | ||
10.00kΩm~99.99kΩm | 10Ωm | ||
100.0kΩm~999.9kΩm | 100Ωm | ||
1000kΩm~9000kΩm | 1kΩm | ||
Earth Voltage 50Hz/60Hz | AC 0.0V~100.0V | ±2%rdg±3dgt | 0.1V |
AC Current 50Hz/60Hz | AC 0.00mA~600.0A | ±2%rdg±3dgt | 0.01mA |
2.General Specification
Power Supply | DC 9V (alkaline dry battery LR14 1.5V 6 sections) |
Display Mode | 4-digit max LCD display, white screen backlight |
Measurement Instruction | LED flashing indication during measurement, LCD countdown display |
LCD Size | 128mm×75mm;LCD Display Domain 124mm×67mm |
Backlight | Controllable white screen backlight, suitable for use in dim place |
Measurement | Precision four-wire, three-wire measurement, simple two-wire, selection method, double clamp method to measure earth resistance |
Measuring Method | Two-three-four-wire measurement: pole changing method |
Test Voltage Waveform | Sine wave |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(Automatic frequency-selecting) |
Test Current | ＞20mA(Sine wave) |
Open Circuit Test Voltage | AC 15V max |
Electrode Spacing Range | 1m~100m |
Test Line | 4 PCS: red 20m, black 20m, yellow 10m, green 10m each 1 piece |
Simple Test Line | 2 PCS: red 1.6m, black 1.6m each 1 piece |
Auxiliary Earth Rod | 4 PCS:φ9mm×230mm |
Current Clamp | 2 PCS:blue and black plug, 1 red and black plug each |
Current Clamp Caliber | φ50mm |
Current Clamp Size | 200mm×103mm×39mm |
Measurement Time | AC current: about 2 times/second; earth voltage: about 2 times/second; earth resistance: about 7 seconds/time |
Line Voltage | Measurement below AC 600V |
Communication Interface | With USB interface, the stored data can be uploaded to the computer through software |
Data Hold | Data holding function: “HOLD" symbol display |
Memory | 2000 groups, flashing "FULL”symbol indicates that the storage is full |
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~100.0V, current: 0.000A~9.9999A |
Battery Voltage | When the battery voltage drop to about 7.5V, the low battery voltage symbol is displayed to remind that the battery need to be replaced. |
Automatic Shutdown | Automatically shut down after 15 minutes of power on |
Working Current | Backlight: 25mA Max (separate backlight power consumption); standby: 25mA Max (the backlight is turned off after the tester turning on); measurement: 150mA Max (the backlight turn off) |
Tester Size | 215mm×178mm×83mm |
Weight | Tester: About 1220g(include battery);total weight: about 5.8kg(include packing) |
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 the circuit and the housing) |
Electromagnetic characteristics | IEC61326(EMC) |
Suitable Safety Regulation | IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2);IEC61010-031; |
Working Temperature & Humidity | -10℃～40℃; below 80%RH |
Storage Temperature & Humidity | -20℃～60℃; below 70%RH |
