Built in Grounding Resistance Tester Online Earth Resistance Detector 0.010~200Ω

Description

Built in Grounding Resistance Tester Online Earth Resistance Detector 0.010~200Ω
Instruction:
ETCR2800 Non-contact Earth Resistance On-line Monitor is high-tech product that our company has devoted to "grounding resistance detection technology research" for more than ten years, specialize for online monitoring grounding down lead connection status, circuit grounding resistance and metal circuit connection resistance range: 0.010Ω~200Ω. On-line testing, non-contact measurement, grounding wire pass through the perforation of the detector, definitely will not influence grounding effective for lightening and normal operation, no need the self-inspection, real time on-line testing. Provide RS485 wire communication (support MODBUS-RTU communication protocol) or GPRS wireless communication data transmission, The monitor is composed of sensor and PCB module, which is suitable for user secondary development integration.
ETCR2800 Non-contact Earth Resistance On-line Monitor can install and use singly, and also can set up wired or wireless network system.
Product Main Function
1. On - line monitoring the earth resistance of grounding system
2. Measure Range: 0.010Ω~200Ω
3. Equip with RS485( support MODBUS-RTU communication protocol) or GPRS interface
4. can be built into inside case  of other equipment ,convenient the secondary development and integration by users
5. Network system can be built to realize real-time detection and remote monitoring
Specification:
Function
Loop circuit grounding resistance on-line monitoring, metal return circuit resistance connection online monitoring, grounding condition monitoring. anti-theft monitoring of grounding wires and metal cables
Power Supply
Detector
：
6VDC
～
9VDC
，
50mA Max(external power supply).
Resistance  Range
0.01Ω~200Ω
Resolution
0.001Ω
Accuracy
±2%rdg±3dgt(20
℃
±5
℃，
below 70%RH)
PCB Size
122mm×56mm×20mm
Sensor Size
ETCR2800N
：
110mm×80mm×55mm
Sensor Perforation Size
ETCR2800N
：
65mm×36mm
Sensor Weight
ETCR2800N
：
680g
；
Overflow Indication
Test data>200Ω, communication send “OLΩ” command
PCB Interface
J1
：
Signal output, power input interface
J2
：
Sensor and PCB interface
Symbol J1
P+:Power input with positive R+
：
Signal output with positive
P-
：
Power input ground     R-: Signal output with negative
GND
：
Signal ground, short connect with power input ground (P-)
Symbol J2
I+
、
I-Current coil interface U+
、
U-Voltage coil interface
GND
：
Common ground
Connect Wire
1pcs ,1 meter length(5 core wire)
Connection Identifier
Red/brown---power supply input anode;
Black--- power supply input cathode;
Blue---RS485 signal anode;
Grey---RS485 signal cathode;
White--- grounding wire shield
(power supply input cathode can connects with analog grounding by short circuit connection)
Communication method
RS485 communication protocol(support MODBUS)
GPRS communication (optional)
Working Temperature And Humidity
-20
℃
~55
℃
; 20%RH~90%RH
Shift
Automatic shift
Grounding lead Interference Current
Should be avoid
External Magnetic Field
<40A/m
External Electric Field
<1V/m
Single Measurement time
About 0.5 second
Working current
50mA Max.
Installation
The ground wire goes through the center hole of the sensor
Installation Demand
PCB should install into other protective case
Packing :
Package
Outer package
Carton
Inner package
None
Accessory
Meter
1 pcs
Power and Communication Cable
1 pcs
PCB module
1 pcs
Certificate
1 pcs
Manual
1pcs
Warranty Card
1 pcs