| Usage: | Auto Testing Machine |
|---|---|
| Power: | Electronic |
| Model Number: | MEWOI3800D |
| Brand Name: | MEWOI |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
INTRODUCTION
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MEWOI3800D Multifunction Non-Contact Resistance Online Tester is our company devotes ourselves to Grounding resistance test technical research's another new high-tech product for more than ten years. Detector adopts weather fastness material manufacture, temperature resistance, cold-resistant, corrosion prevention, fire prevention. Detector's structure is rigorous and firm, against rain, dustproof, installation and use outdoors. Non-contact measurement, safe and reliable, Ease of installation. Grounding down lead is directly through the detector perforation, Will not affect lightning protection grounding effect and the normal operation of the facilities. Ensure high-accuracy, high stability and high reliability of long time on-line monitoring outdoors, underground mine and indoors. MEWOI3800D Multifunction Non-Contact Resistance Online Tester is equipped with LCD display and alarm light, which can observe grounding resistance value at any times and set the alarm critical val. Alarm light will flash when measured value is beyond pre-set critical value. Detector applies to electric transmission line pole ground connection, underground mine device ground connection, meteorological lightning protection grounding connection, petrochemical engineering ground connection, communication ground connection, rail facility ground connection, building the warehouse ground connection, electrical equipment ground connection etc.. Detector provides power supply and RS485 signal interface, and standard MODBUS-RTU communication protocol, which user can do secondary development to realize remote monitoring. MEWOI3800D's LCD shows measured value directly, also sets up Detector's alarm critical value, and possess audible and visual alarming function, which is very suitable to Independent installation and use when it needn't form a network. |
TECHNICAL SPECIFICATION
|
Functions |
Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring |
|
Power Supply |
6VDC~9VDC, 50mA Max. |
|
Resistance Range |
0.01Ω~200Ω |
|
Resolution |
0.01Ω |
|
Display Range |
0.00Ω～500Ω |
|
Accuracy |
±2%rdg±3dgt(20℃±5℃, below70%RH) |
|
Grounding Wire Perforation Size |
60mm×30mm, closed mode (60mm×4mm steel flat or external diameterФ30mm electric cable) |
|
Overflow Indication |
When show value is beyond 500Ω, systems software and LCD show " OLΩ" sign. |
|
Connecting Line |
A one meter long wire (5cores shielded wire) |
|
Connection Identifier |
Red/brown---power supply input anode; Black--- power supply input cathode. Blue---RS485 signal anode; Grey---RS485 signal cathode; White--- analog grounding (power supply input cathode can connects with analog grounding by short circuit connection) |
|
Communication Protocol |
RS485 standard MODBUS-RTU communication protocol |
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Alarm Indication |
Detector Audible and visual alarm instructions |
|
Alarm Setting |
Detector panel setting |
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Data Display |
4digits LCD direct indication |
|
LCD Dimensions |
47mm×28.5mm |
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Detector Dimensions |
175mm×170mm×130mm |
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Installing Screw Hole Size |
Φ8mm |
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Quality |
Detector: 960g |
|
Working Temperature and Humidity |
-10℃~ 45℃; 20％RH ~ 90％RH |
|
Humiture Error |
Within 5% |
|
Shift |
Automatic shift |
|
GND Interference Current |
Prohibited |
|
External Magnetic Field |
＜40A/m |
|
External Electric Field |
＜1V/m |
|
Single Measurement Of Time |
About 0.5 second |
|
Power Consumption |
50mA Max. |
|
Installation |
Grounding wire through Detector centre bore |
|
Level Of Protection |
IP65 |
|
Installation Requirements |
Avoid rain and water logging |
|
Power Supply Mode |
External power supply (Equipped by user) |
Digital Earth Resistance Clamp Meter
Click "blue"marked model No. for detailed Specificaiton
| Model |
Range |
Resolution |
clamp size | RS232 | Data Storge | Audible and visible alarm |
Other |
| MEWOI3000B+ | 0.01Ω-200Ω | 0.01Ω | 65mm×32mm |
optional |
99sets | √ |
|
| MEWOI3100B+ | ?32mm |
|
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| MEWOI3000+ | 0.01Ω-1200Ω | 0.01Ω | 65mm×32mm | optional | 99sets | √ |
|
| MEWOI3100+ | ?32mm |
|
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| MEWOI3000D+ |
0.01Ω-1200Ω 0.00-20.00A |
0.01Ω,0.05mA | 65mm×32mm | optional | 99sets | √ |
|
| MEWOI3100D+ | ?32mm |
|
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| 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. | |
| MEWOI4000 |
0.01Ω～2000Ω; 0～600V |
0.01Ω,1V |
|
√ | 400sets |
|
2/3-wires measurement of earth resistance/voltage |
| MEWOI4000C |
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 |
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 | ?68mm | √ | 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. |