MEWOI4000C Earth Resistance Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage, AC voltage. Adopting the latest digital and micro-processing technology, precise 4-pole, 3-pole and simple 2-pole method for earth resistance measurement, importing FFT and AFC technology, with a unique function of anti-interference capability and the ability to adapt to the environment, consistency of repeat testing, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, soil resistivity, earth voltage, AC voltage measurement.
MEWOI4000C Earth Resistance Soil Resistivity Tester is composed of host machine, monitoring software, testing wires, auxiliary ground pillars, communication wires and others. The large LCD display of host machine is with blue 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 like historical data access, reading, preservation, report forms, printing and so on.
1.Base Conditions and Working Conditions
Auxiliary Earth Resistance
Electrode Distance when measuring R
Electrode Distance when measuring ρ
2.Intrinsic error and performance indicators under base conditions
According to the precision of R
Note: 1). When rC max or rP max, additional error≤±3%rdg±5dgt.
(rC max: 4kΩ+100R<50kΩ, rPmax: 4kΩ+100R<50kΩ)
2). When 5V interference voltage, additional error≤±5%rdg±5dgt.
卐 Selection Guide
|Model||Range||Resolution||clamp size||RS232||Data Storge||Audible and visible alarm ||Other|
|MEWOI3000B+||0.01Ω-200Ω ||0.01Ω||65mm×32mm||optional ||99sets||√|
|MEWOI3000+||0.01Ω-1200Ω ||0.01Ω||65mm×32mm||optional ||99sets||√|
|0.01Ω,0.05mA ||65mm×32mm||optional ||99sets||√|
|MEWOI3800C||0.01Ω-200Ω ||0.01Ω||60mm*30mm||Appoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol||×|
|MEWOI3800D||0.01Ω-200Ω ||0.01Ω||60mm*30mm||×||LCD display,warning function.|
|0.01Ω,1V||√||400sets||2/3-wires measurement of earth resistance/voltage|
|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.|