Introduction:
1. 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.
2. 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.
3. 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 |
On Jun 6, 2022 at 03:48:54 PDT, seller added the following information: