MEWOI4000C-Earth Ground Resistance/Soil resistivity Tester/GEO Tester

  • Name:
    MEWOI4000C-Earth Ground Resistance/Soil resistivity Tester
  • Model No.:
    MEWOI4000C
  • Main Features:
    1. 2/3/4-wires measurement of earth resistance, soil resistivity, earth voltage, AC voltage; 2.Measurement Range: Earth Resistance: 0.00Ω-30.00kΩ; 0~600V, Soil Resistivity: 0.00Ωm-9000kΩm; 3. Data upload: RS232 interface 4.Date storage:300 sets
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INTRODUCTION

Click to download:  MEWOI4000C Color Page

Click to download:  MEWOI4000C Manual

Click to download: Selection Map

MEWOI4000C.01.jpg

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.

Technical Specifications

 1.Base Conditions and Working Conditions

Influence Quantity

Base Condition

Working Conditions

Remark

Ambient Temp

23℃±1℃

-10℃-40℃

----

Ambient Humidity

40%-60%

<80%

----

Working Voltage

9V±0.1V

9V±1.5V

rC,rP

Auxiliary Earth Resistance

<100Ω

<30kΩ

----

Interference Voltage

----

<20V

----

Interference Current

----

<2A


Electrode Distance when  measuring R

a>5d

a>5d

----

Electrode Distance when  measuring ρ

a>20h

a>20h

----

2.Intrinsic error and performance indicators under base conditions

Category

Measurement Range

Intrinsic Error

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

3.00kΩ-30.00kΩ

±4%rdg±3dgt

10Ω

Soil Resistivity

(ρ)

 

0.00Ωm-99.99Ωm

According to the precision of R

(ρ=2πaR

a: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

AC 0.0-600V

±2%rdg±3dgt

0.1V

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.

Selection Guide

ModelRange
Resolution
clamp sizeRS232Data StorgeAudible and visible alarm Other
MEWOI3000B+MEWOI3000B+_副本.jpg
0.01Ω-200Ω    0.01Ω65mm×32mmoptional 
99sets
MEWOI3100B+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3000+MEWOI3000B+_副本.jpg0.01Ω-1200Ω   0.01Ω65mm×32mmoptional 99sets
MEWOI3100+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3000D+MEWOI3000B+_副本.jpg

0.01Ω-1200Ω 

0.00-20.00A  

0.01Ω,0.05mA  65mm×32mmoptional 99sets
MEWOI3100D+MEWOI3100B+官网主图_副本_副本.jpgø32mm
MEWOI3800CMEWOI3800C_副本80.jpg0.01Ω-200Ω    0.01Ω60mm*30mmAppoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol×

MEWOI3800DMEWOI3800D_副本80.jpg0.01Ω-200Ω  0.01Ω60mm*30mm×
LCD display,warning function.
MEWOI4000MEWOI4000C_副本.jpg

0.01Ω~2000Ω;

 0~600V

0.01Ω,1V
400sets
2/3-wires measurement of earth resistance/voltage
MEWOI4000CMEWOI4000C_副本.jpg

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
MEWOI4200MEWOI4200-1_副本80.jpg

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,0.1Vø68mm2000sets
2/3/4-wires,selection & dual clamp method to measure the earth resistance,soil resistivity,earth voltage,AC voltage,AC leakage current,warning function.

TECHNICAL SPECIFICATION

Function

Measurement of 2/3/4-pole earth resistance, soil resistivity, earth voltage, AC voltage

Power Supply

DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )

Measurement Range

Earth Resistance: 0.00Ω-30.00kΩ

Soil Resistivity: 0.00Ωm-9000kΩm

Measuring Mode

Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement

Measuring Method

Earth Resistance: rated current change-pole method, measurement current 20mA Max

Soil Resistivity: 4-pole measurement (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

Blue screen backlight, suitable for dim places

Display Mode

4-digital super-large LCD display, blue screen backlight

Measuring Indicator

During measurement, LED flash indicator, LCD count down display, progress bar indicator

LCD Frame Dimension

128mm×75mm

LCD Window Dimension

124mm×67mm

Dimension

L×W×H: 215mm×190mm×95mm

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 Earthing Rod

4 wires: Φ10mm×150mm

Measuring Rate

Voltage to ground: about 3 times/second

Earth resistance, soil resistivity: about 5 seconds/time

Measuring Times

Over 5000 times (Short-circuit test, interval time should be at least 30 seconds)

Circuit Voltage

below AC 600V

RS232 Interface

Possess RS232 interface, software supervision, storage data can be uploaded to computer, saved or printed.

Communication Wire

One piece of RS232 communication wire, with length 1.5m

Data Storage

300 sets, “MEM” icon storage indicator, flash display “FULL” icon to indicate storage is full

Data Hold

Data hold function: “HOLD” icon display

Data Read

Data read function: “READ” icon display

Overflow Display

Exceeding measuring range overflow function: “OL” icon display

Interference Test

Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V

Auxiliary Earthing Test

Can measure auxiliary earth resistance, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ)

Alarm Function

When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint

Battery Voltage

When battery voltage decreases to about 7.5V, battery voltage low icon     will display, reminding to replace battery.

Power Consumption

Standby: about 20mA (Backlight shut off)

Boot and with backlight: about 45mA (25mA without backlight)

Measurement: about 100mA (Backlight shut off)

Weight

Total weight: 4.5kg (including package),Tester: 1443g (including battery),Auxiliary earthing rods: 935g (4pcs)

Tester1 PC
Tester Bag1 PC
Auxiliary Earthing Rod4 PCS
Standard testing Wire4 wires: each for red 20m, black 20m, yellow 10m, and green 10m
Simple testing Wire2 wires: each for red 1.6m and black 1.6m
Zinc-manganese Dry Battery6 PCS (R14S 1.5V)
Monitoring Software Disk1 Copy
RS232 Communication Cable1 PC
Manual/Warranty Card/Qualification Certificate1 Copy