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ETCR2800B Non-Contact Resistance Online Tester
Color page: User's manual: CE certificate:
ETCR2800B Non-Contact Resistance Online Tester ETCR2800B ETCR

Return Circuit Grounding Resistance Online Testing, Metallic Return Connection Resistance Online Testing. Detector adopts non-contact measuring technique, safe and reliable, ease of installation. Grounding down Lead passes through the hole, definitely not influence grounding for lightening effect and facilities’ normal operation. Perforation Size: 60 mm×30mm, Resistance Range: 0.01Ω-200Ω.

ETCR2800B Non-Contact Resistance Online Tester
ETCR2800B Non-Contact Resistance Online Tester
I. Brief Introduction
       ETCR2000BNon-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.
       ETCR2000BNon-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 power supply and RS485 signal interface, and standard MODBUS-RTU communication protocol,which user can do secondary development to realize remote monitoring.
II. Technical Specifications
Return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring
Power Supply
6VDC~9VDC, 50mA Max.
Resistance Range
±2%rdg±3dgt(20℃±5℃, below70%RH)
Grounding Wire Perforation Size
60mm×30mm, closed mode (60mm×4mm steel flat or external diameterФ30mm electric cable)
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
Detector Dimensions
Installing Screw Hole Size
Working Temperature And Humidity
-10℃~40℃; 20%RH~90%RH
Humiture Error
Within 5%
Automatic shift
GND Interference Current
External Magnetic Field
External Electric Field
Single Measurement Of Time
About 0.5 second
Power Consumption
50mA Max.
Grounding wire through Detector centre bore
Level Of Protection
Installation Requirements
Avoid rain and water logging
Power Supply Mode
External power supply (Equipped by user)
III. The Application of Figure

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