FRP Ground-Resistance Monitor (Loop Method)
FRP Series
Loop-method ground-resistance monitoring, 0.01-2000 Ohm wide range, Ex d IIB T4 Gb explosion-proof certification, suitable for petrochemical hazardous areas.

Product Overview
The FRP Loop-Method Ground Resistance Monitor measures ground resistance using the loop method (no auxiliary electrode required), with a 0.01Ω~2000Ω range, 0.01Ω resolution and ±2%rdg±3dgt accuracy. It features an Ex db IIB T4 Gb explosion-proof flameproof enclosure with IP65 protection, supports RS485/Zigbee/Ethernet/4G and MODBUS/MQTT, and suits online grounding monitoring in petrochemical sites/gas stations, building lightning-protection grounding, communication base stations/substations, outdoor distribution boxes/street lights and similar scenarios.
Core Capabilities
Loop method with real-time online monitoring, no auxiliary electrode required. Explosion-proof flameproof enclosure, Ex db IIB T4 Gb. 0.01Ω~2000Ω wide range, ±2%rdg±3dgt. RS485/Zigbee/Ethernet/4G, MODBUS/MQTT.
Data Generated
Product Features
Loop Method, No Auxiliary Electrode
Uses the loop method without auxiliary electrodes, suitable for rapid online monitoring of existing grounding systems.
Explosion-Proof Enclosure
Ex db IIB T4 Gb explosion-proof flameproof enclosure with IP65 protection, suitable for hazardous areas such as petrochemical sites.
Wide Range, High Resolution
Ground resistance 0.01Ω~2000Ω, 0.01Ω resolution, ±2%rdg±3dgt accuracy.
Multiple Communication Options
Supports RS485/Zigbee/Ethernet/4G with MODBUS/MQTT to connect to the cloud platform.
Wide-Voltage Power Supply
Power DC12V (default)/DC24V/AC220V, suitable for long-term outdoor operation.
System Topology
Selection Guide
Model Naming Rule
FRP Loop-Method Ground Resistance Monitor Models FRP-01111 / FRP-02111 / FRP-03111 Installation 1=outdoor; 2=indoor Power DC12V (default)/DC24V/AC220V Communication RS485/Zigbee/Ethernet/4G
Technical Parameters
Smart Monitoring Functions
Communication RS485/Zigbee/Ethernet/4G Protocol MODBUS/MQTT Ground resistance 0.01Ω~2000Ω, 0.01Ω, ±2%rdg±3dgt Measurement method Loop method (no auxiliary electrode) Explosion-proof rating Ex db IIB T4 Gb Protection IP65 Power DC12V (default)/DC24V/AC220V Dimensions 230*230*130mm, 5kg
| Communication | RS485/Zigbee/Ethernet/4G |
| Protocol | MODBUS/MQTT |
| Ground resistance | 0.01Ω~2000Ω, 0.01Ω, ±2%rdg±3dgt |
| Measurement method | Loop method (no auxiliary electrode) |
| Explosion-proof rating | Ex db IIB T4 Gb |
| Protection | IP65 |
| Power | DC12V (default)/DC24V/AC220V |
| Dimensions | 230*230*130mm, 5kg |
Key Points
Definition: The FRP Loop-Method Ground Resistance Monitor is a FEXLINK explosion-proof device for online loop-method ground resistance monitoring. Core capabilities: loop method without auxiliary electrodes, 0.01Ω~2000Ω wide range, Ex db IIB T4 Gb enclosure, RS485/Zigbee/Ethernet/4G upload. Applicable scenarios: petrochemical sites/gas stations, building lightning-protection grounding, communication base stations/substations, outdoor distribution boxes/street lights. Related products: FR Three-Point Ground Resistance Monitor, FG Smart Gateway, FEXLINK Cloud grounding monitoring solution.
FAQ
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Learn MoreFRP Ground-Resistance Monitor (Loop Method) Application Scenarios
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