INTRODUCTION

MEWOI3800DA Detector can be proof rain and dust , can be installed outdoors.Detector using non-contact measurement technology, safe and reliable, ground down lead directly through the detector, does not affect the lightning protection grounding effect and the normal operation of facilities. Ensure high-accuracy, high stability and high reliability of long time on-line monitoring outdoors, underground mine and indoors.

MEWOI3800DA Non-Contact Grounding Resistance Online Detector applies to electric transmission line pole ground connection, underground mine device ground connection, Meteorological lightning protection ground connection, petrochemical engineering ground connection, communication ground connection, rail facility ground connection, building the warehouse ground connection, electrical equipment ground connection etc.. Detector provides RS232+RS485 interface,can set up network system, real-time detection, remote monitoring.

MEWOI3800DA.13.jpg

TECHNICAL SPECIFICATION

Power SupplyDC 6V~9V,50mA Max.(External power supply)
Grounding cable Perforation Size60mm×30mm  closed mode (60mm×4mm steel flat or external diameterФ30mm electric cable)
LCD Display47mm×28.5mm
Range0.010Ω~200Ω
Resolution0.001Ω
Accuracy±2%rdg±3dgt     (20±5)℃,below 70%RH
Auto Power-offCan't Auto Power-off
Power consumption≤50mA
Working environment-20℃~55℃;20%rh~90%rh
Store  environment-20℃~60℃;below 90%rh
Explosion markEx ia ⅡB T3 Ga
Level Of ProtectionIP56
Communication methodWired network:RS232、RS485、RS485-MODBUS-RTU  communication protocol
Wireless network:RS232、RS485、RS485-MODBUS-RTU、GSM  communication protocol (Optional)
Data DisplaySystem software display
Alarm IndicationSystem software alarm indication
Alarm SettingSystem software setting
Single measurement time0.5 second
ShiftAutomatic shift
External Magnetic Field<40A/m
External Electric Field<1V/m
GND Interference Currentavoid
Protection degreePCB,Sensor completely seal
Power and communication cable1M/PCS(5 core wire)
Mounting screw hole sizeΦ8mm
InstallationGrounding cable through Detector centre bore
Installation RequirementsAvoid rain and water logging
Connection IdentifierRed/brown---power supply input anode;
Black--- Power input;
Blue---RS485 Positive signal;
Grey---RS485 Negative signal
White--- analog grounding (power supply input cathode can connects with analog grounding by short circuit connection)
Detector weight960g
Detector Dimensions175mm×170mm×130mm
SELECTION GUIDE

Digital Earth Resistance Clamp Meter

Click "blue"marked model No. for detailed Specificaiton

ModelRange
Resolution
clamp sizeRS232Data StorgeAudible and visible alarm Other

MEWOI3000B+

MEWOI3000B+.jpg

0.01Ω-200Ω    0.01Ω65mm×32mmoptional 
99sets

MEWOI3100B+

MEWOI3100B+.jpg

ø32mm

MEWOI3000+

MEWOI3000B+.jpg

0.01Ω-1200Ω   0.01Ω65mm×32mmoptional 99sets

MEWOI3100+

MEWOI3100B+.jpg

ø32mm

MEWOI3000D+

MEWOI3000B+.jpg

0.01Ω-1200Ω 

0.00-20.00A  

0.01Ω,0.05mA  65mm×32mmoptional 99sets

MEWOI3100D+

MEWOI3100B+.jpg

ø32mm

MEWOI3200

MEWOI3200.80.jpg

0.01Ω-1500Ω 

0.00-40.00A  

0.01Ω,0.05mA  65mm×32mm99setsRechargable Batteries

MEWOI3800C

MEWOI3800C_80.jpg

0.01Ω-200Ω    0.01Ω60mm*30mmAppoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol×

MEWOI3800D

MEWOI3800D_80.jpg

0.01Ω-200Ω  0.01Ω60mm*30mm×
LCD display,warning function.

MEWOI3800CA

MEWOI3800CA.80.jpg

0.01Ω-100Ω    0.01Ω

60mm*30m

(Closed)

Appoint with RS485 communication interface, provide standard MODBUS-RTU communication protocol×

MEWOI3800DA

MEWOI3800DA.80.jpg

0.01Ω-100Ω    0.01Ω

60mm*30m

(Closed)

×
LCD display,warning function.

MEWOI3800LC

MEWOI3800LC.80.jpg

0.01Ω-200Ω    0.01Ω

Split  Type

56mm×26mm

Wired network: RS232,RS485 standard communication protocol

Wireless network: RS232、RS485、GSM communication protocol

×

MEWOI3800LD

MEWOI3800LD.80.jpg

0.01Ω-200Ω  0.01Ω

Split Type

56mm×26mm

×
LCD display,warning function.

MEWOI4000

MEWOI4000.80.jpg

0.01Ω~2000Ω;

 0~600V

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

MEWOI4000C

MEWOI4000C.80.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

MEWOI4200

MEWOI4200-1_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.


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