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| Contact Us For Quotation | Email: 464560351@qq.com | Whatsapp&Wechat:+8618620373879 |
INTRODUCTION
MEWOI4200D Earth Resistance Soil Resistivity Tester is specially designed and manufactured for on-site measurement of earth resistance, soil resistivity, earth voltage, AC voltage. Apply digital processing technology, precision 4-wire method, 3-wire method and simple 2-wire method to measure grounding resistance; Adopt FFT (fast Fourier transform) technology, AFC (automatic frequency control) technology, automatic identification of interference and selection of measurement frequency, to minimize the impact of interference, provide more accurate earth resistance value. With unique anti-interference ability and environmental adaptability, high repeated test consistency, ensuring high precision, high stability and high reliability for long-term measurement.The tester case is made of waterproof protection box, anti-collision, anti-drop, waterproof (protection grade IP65), strong and durable, and also equipped with a large-capacity rechargeable lithium battery pack, especially suitable for outdoor construction.Widely used in power, telecommunications, meteorology, oil fields, construction, lightning protection and industrial electrical equipment, such as grounding resistance, soil resistivity, grounding voltage. MEWOI4200D Earth ResistanceSoilResistivity Tester is composed of host machine, monitoring software, testing wires, auxiliary ground pillars, communication wires etc. The large LCD display of host machine, with white backlight and bar graph indicating that can be seen clearly. At the same time it can store 300 sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, alarm indicator, and with the functions as historical data access, reading, preservation, report forms, printing and so on. MEWOI4200D Earth ResistanceSoilResistivity Tester also named: Precision Earth Resistance Tester, 4-pole Earth Resistance Tester, 2/3/4-pole Earth Resistance Tester, Soil Resistivity Tester. |
SPECIFICAITON
Technical Specifications
| Function | Description |
| Function | 2/3/4-pole measurement for earth resistance, soil resistivity, earth voltage |
| Power Supply | DC 7.4V 2600mAh rechargeable lithium battery, full of about 8.4V |
| 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 | 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 Indicator | During measurement, LED flash indicator, LCD count down display, progress bar indicator |
| LCD Frame Dimension | 128mm×75mm |
| LCD Window Dimension | 124mm×67mm |
| Meter Dimension | 280mm(L)×260mm(W)×160mm(H) |
| Standard Test Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
| Simple Test Wire | 2 wires: each for red 1.6m and black 1.6m |
| Auxiliary Ground Rod | 4 wires: Φ10mm×150mm |
| Measurement Rate | Voltage to earth: 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) |
| Circuit Voltage | below AC 600V |
| Communication Interface | USB interface, software monitoring, storage data can be uploaded to computer, saved or printed. |
| Communication Wire | One piece USB communication wire, length 1.5m |
| Data Storage | 300 sets, “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, 0.00K?-30k?(100R+rC<50k?, 100R+rP<50k?) |
| Alarm Function | Measurement value exceeds alarm setting value, will “Toot-toot-toot” alarm hint |
| Auto-shut off | Automatically shut down after 10 minutes of power on |
| Battery Voltage | While battery voltage decreases to around 7.2V±0.1V, will display battery voltage low symbol“ ”, and reminding to charge |
| Working Power | Standby: about 20mA (Backlight shut off) |
| Boot up and with backlight: about 45mA (25mA without backlight) | |
| Measurement: about 100mA (Backlight shut off) | |
| Weight | Tester: 2290g |
| Tester bag:915g | |
| Test wires: 1560g | |
| Auxiliary ground rods: 935g (4pcs) | |
| Working Temperature & Humidity | -10oC-40oC, below 80%rh |
| Storage temperature & humidity | -20oC-60oC, below 70%rh |
| Overload Protection | Measuring earth resistance: between each interfaces of C(H)-E?P(S)-ES, AC 280V/3 seconds |
| Protection Level | IP65(close the case) |
| Insulation Resistance | Over 20MΩ (between circuit and enclosure it is 500V) |
| Withstand Voltage | AC 3700V/rms (Between circuit and enclosure) |
| Electromagnetic Features | IEC61326(EMC) |
| Protection Type | IEC61010-1 (CAT III 300V, CAT IV 150V, Pollution 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity), JJG 366-2004 |
Intrinsic error and performance indicators under base conditions
| Measurement Function | Measurement Range | Accuraccy | 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=2πaR a: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=2πaR a: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 |
SELECTION GUIDE
Digital Earth Resistance Clamp Meter
Click "blue"marked model No. for detailed Specificaiton
| Model | Range | Resolution | clamp size | RS232 | Data Storge | Other |
| 0.01Ω-200Ω | 0.001Ω | 65mm×32mm | optional | 99sets | |
| ø32mm | |||||
MEWOI3000B
| 55mm×32mm | |||||
MEWOI3000
| 0.01Ω-1000Ω | 0.001Ω | 55mm×32mm | 99sets | ||
| 0.01Ω-1200Ω | 0.001Ω | 65mm×32mm | optional | 99sets | |
| ø32mm | |||||
MEWOI3000D
| 0.01Ω-1000Ω 0.00-30.00A | 0.001Ω,0.05mA | 55mm×32mm | 99sets | ||
| 0.01Ω-1200Ω 0.00-20.00A | 0.001Ω,0.05mA | 65mm×32mm | optional | 99sets | |
| ø32mm | |||||
| 0.01Ω-1500Ω 0.00-40.00A | 0.001Ω,0.05mA | 65mm×32m m | √ | 99sets | Rechargable Batteries |
| 0.01Ω-100Ω | 0.01Ω | 60mm*30mm，(Closed) | Appoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol | × | |
| 0.01Ω-100Ω | 0.01Ω | 60mm*30mm （Closed）， | × | LCD display,warning function. | |
| 0.01Ω-200Ω | 0.01Ω | Split Type 56mm×26mm | Wired network: RS232,RS485 standard communication protocol Wireless network: RS232、RS485、GSM communication protocol | × | |
| 0.01Ω-200Ω | 0.01Ω | Split Type 56mm×26mm | × | LCD display,warning function. | |
| 0.01Ω~2000Ω | 0.01Ω | 2/3-wires measurement, Online | |||
| 0.01Ω~2000Ω | 0.01Ω | 2/3-wires measurement, Online,GPRS | |||
| 0.01Ω～2000Ω; 0～600V | 0.01Ω,1V | √ | 400sets | 2/3-wires measurement of earth resistance/voltage | |
| 0.01Ω～2000Ω; 0～600V | 0.01Ω,1V | √ | 400sets | 2/3-wires measurement of earth resistance/voltage | |
| earth resistance:0.01Ω～30.00KΩ; soil resistivity:0.01Ωm～9000KΩm; 0～600V | 0.01Ω,0.01Ωm,1V | √ | 300sets | 2/3/4-wires measurement of earth resistance,soil resistivity,and earth voltage | |
MEWOI4200D
| earth resistance:0.01Ω～30.00KΩ; soil resistivity:0.01Ωm～9000KΩm; 0～600V | 0.01Ω,0.01Ωm,1V | √ | 300sets | 2/3/4-wires measurement of earth resistance,soil resistivity,and earth voltage | |
| earth resistance:0.01Ω～30.00KΩ;AC Leakage current: 0.00mA~600A; soil resistivity:0.01Ωm～9000KΩm;Earth Voltage:0.0~100.0V,dual clamp: 0.01Ω-100Ω | 0.01Ω,0.01Ωm,0.01A,0.1V | ø68mm | √ | 2000sets | 2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function. |
| earth resistance:0.01Ω～30.00KΩ;AC Leakage current: 0.00mA~600A; soil resistivity:0.01Ωm～9000KΩm;Earth Voltage:0.0~100.0V,dual clamp: 0.01Ω-100Ω | 0.01Ω,0.01Ωm,0.01A,0.1V | ø68mm | √ | 2000sets | 2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function. |
| Ground resistance:0.10Ω ～ 200Ω(4 clamp method) Ground resistance ( R ):0.10Ω ～ 20KΩ Soil resistivity ( ρ )0kΩm～9000kΩm AC current (A～)1mA～500.0A Ground voltage (V～)0.0V～200.0V | 0.01Ω,0.01Ωm,0.01mA,0.1V | ø68mm | √ | 100sets | Untie-free tower grounding resistance tester |
