Soil Resistivity Test Equipment Digital Earth Resistance Tester
- Wrindu
- Shanghai, China
- about 25 days
- 5000 set/month
- RD3021E
RD3021E Earth Resistance Soil Resistivity Tester specially designed and manufactured for the field measurement of earth resistance and soil resistivity, adopts digital and micro-processing technology, 4 wire or 3 wire or 2 wire method to measure ground resistance, Import FFT (fast Fourier transform) technology, AFC (automatic frequency control) technology, with unique anti-interference ability and environmental adaptability, high repeated test consistency. ensure the measurement of high precision, high stability and reliability.
Product features
1. The fuselage is light, easy to carry and operate.
2. The large LCD display of host machine, with white backlight and bar graph indicating that can be seen clearly.
3. It can store 300 sets of data,
4. With the functions as historical data access, reading and preservation.
Product specifications and technical parameters
Measurement Range & Accuracy
Test Function | 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=2×π×a×R a:1m～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 | AC 0.0～600V | ±2%rdg±3dgt | 0.1V |
2. Technical Parameters
Function | Description |
Function | 2/3/4-pole measurement for earth resistance, soil resistivity, earth voltage, AC voltage |
Power Supply | DC 9V( Alkaline dry battery R14S 1.5V 6PCS ) |
Measurement Range | Earth Resistance: 0.00Ω ~ 30.00kΩ |
Soil Resistivity: 0.00Ωm ~ 9000kΩm | |
Earth Voltage: 0V～600V | |
Measurement Mode | Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement of earth resistance |
Measurement Method | Earth Resistance: rated current change-pole method, test current 20mA Max |
Soil Resistivity: 4-pole method (Wenner method) | |
Earth Voltage: average rectification (between P(S)-ES) | |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Short-circuit Test Current | AC 20mA max |
Open-circuit Test Current | AC 40V max |
Test Voltage Wave | Sine wave |
Electrode Distance Range | Can be set 1m ~100m |
Shift | Earth resistance: 0.00Ω-30.00kΩ, automatic shift |
Soil Resistivity: 0.00Ωm-9000kΩm, automatic shift | |
Backlight | Controllable white screen backlight, suitable for dim places |
Display Mode | 4-digital super-large LCD display, white screen backlight |
Measurement Indication | During measurement, LED flash indicator, LCD count down display, progress bar indicator |
LCD Frame Dimension | 128mm×75mm |
LCD Display Dimension | 124mm×67mm |
Meter Dimension | 215mm(L)×178mm(W)×83mm(H) |
Standard Test Wire | 4PCS: each for red 20m, black 20m, yellow 10m and green 10m |
Simple Test Wire | 2PCS: each for red 1.6m and black 1.6m |
Auxiliary Ground Rod | 4PCS: Φ10mm×150mm |
Measurement Time | Earth Voltage: about 3 times/second |
Earth resistance, soil resistivity: about 15 seconds/time | |
Measuring Times | Over 5000 times (Short-circuit test, interval time should be at least 30 seconds) |
Line Voltage | Below AC 600V measure |
Communication Interface | USB interface, software monitoring, storage data can be uploaded to computer, saved or printed. |
Communication Cable | 1PCS USB communication cable, length 1.5m |
Data Storage | 300 groups, “MEM” symbol storage indicator, flash display “FULL” symbol indicate storage full |
Data Hold | Data hold function: “HOLD” symbol display |
Data Read | Data read function: “READ” symbol display |
Overflow Display | Over range overflow function: “OL” symbol display |
Interference Test | Recognize interference signal automatically, “NOISE” symbol display when interference voltage exceed 5V |
Auxiliary Ground Test | With auxiliary earth resistance test function, 0.00KΩ-30KΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
Alarm Function | Measurement value exceeds alarm setting value, will “Toot-toot-toot” alarm hint |
Battery Voltage | While battery voltage decreases to around 7.5V, will display battery voltage low symbol, and reminding to replace the battery |
Working Current | Standby: about 20mA (Backlight close) |
Boot up and open backlight: about 45mA (25mA backlight close) | |
Measurement: about 100mA (Backlight close) | |
Weight | Tester: 0.95kg |
Test wires: 1.56kg | |
Auxiliary ground rods: 0.935kg (4pcs) | |
Working Temperature & Humidity | -10℃ ~ 40℃, below 80%RH |
Storage temperature & humidity | -20℃ ~ 60℃, below 70%RH |
Overload Protection | Measuring earth resistance: between each interfaces of C(H)-E、P(S)-ES, AC 280V/3 seconds |
Insulation Resistance | Over 20MΩ (between circuit and enclosure it is 500V) |
Withstand Voltage | AC 3700V/rms (Between circuit and enclosure) |
Electromagnetic Features | IEC61326(EMC) |
Suitable Safety Standard | IEC61010-1 (CAT Ⅲ 300V、CAT IV 150V、Pollution 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity) |
