ORP · Redox Potential Sensor

M200 ORP Digital Sensor

The platinum electrode and Ag/AgCl reference measure redox potential from -2000 to +2000 mV with +/-5 mV accuracy. IP68 protection, flexible mounting, and RS485 output support disinfection, dosing, circulating-water, and wastewater applications.

Redox Potential ORP Sensor
±2000 mV
Range
1 mV
Resolution
±5 mV
Measurement Accuracy
IP68
Full protection · RS485
Features

Reliable ORP readings for confident process control

The platinum measurement electrode and Ag/AgCl reference provide stable, high-impedance readings. Corrosion-resistant housings and flexible mounting suit drinking-water disinfection and industrial wastewater treatment.

Advanced Circuitry

High-impedance input, high-precision acquisition of weak mV potential signals, anti-electromagnetic interference.

Easy Installation

Submersion / flow-through / threaded insertion options, standard 5m cable for quick deployment.

Industrial-grade Protection

IP68 full protection, POM / 304L / PPS corrosion-resistant housings for different scenarios.

Fast Response

Fast platinum-electrode response, stable readings, and precise dosing and disinfection endpoints.

Model Selection

ORP Sensor Model Overview

The same series covers submersion, flow-through, and insertion installations for various media. Filter by installation; after selecting a model, add to your selection list or contact our engineers to verify.

M200-ORP-01
RS485 Digital
Submersion · General Purpose
Range±2000 mV
Temp. Range0–60°C
Housing MaterialPOM
InstallationSubmersion
WastewaterSurface WaterLandscape Water
M200-ORP-02
RS485 Digital
Flow-through · DisinfectionOnline
Range±2000 mV
Temp. Range0–60°C
Housing MaterialPOM
InstallationFlow-through
Tap WaterDisinfectionSecondary Supply
M200-ORP-03
RS485 Digital
Threaded Insertion · Process
Range±2000 mV
Temp. Range0–80°C
Housing Material304 Stainless Steel
InstallationInsertion
ChemicalDosing ControlIndustrial Processes
M200-ORP-04
4-20mA Analog
Submersion · Pressure-resistant
Range±2000 mV
Temp. Range0–60°C
Housing Material304L · POM
InstallationSubmersion
Deep WellReservoirHigh Lift
M200-ORP-05
RS485 Digital
Flow-through - Circulating Water Type
Range±2000 mV
Temp. Range0–50°C
Housing MaterialPOM
InstallationFlow-through
Circulating WaterCooling WaterHVAC Water
M200-ORP-06
RS485 Digital
Submersion · High Temperature Type
Range±2000 mV
Temp. Range0–100°C
Housing MaterialPPS
InstallationSubmersion
Boiler WaterHigh-temp Wastewater Disinfection
Specifications

Complete Specifications

Series General Specifications,Individual parameters (temperature range, housing, output) vary by model. Subject to selection confirmation.

Measured Parameter
ORP Value (Redox Potential)
Measuring Range
-2000~+2000 mV
Resolution
1 mV
Measurement Accuracy
±5 mV
Measurement Electrode / Reference
Platinum Electrode / Ag/AgCl Reference
Temp. Measurement range
0.0-60.0°C (High Temperature Type up to 100°C)
Pressure Range
0–4 bar
Housing Material
POM / 304L Stainless Steel / PPS(By Model)
Process Connection
G3/4 · NPT3/4 · M39×1.5
Cable Length
Standard 5m (Customizable)
Protection Rating
IP68
Power Supply
DC9–30V(recommended DC12V)
Electrical Connection
RS485 (MODBUS-RTU) or 4-20mA Analog
Installation
Submersion / Flow-through / Insertion
Warranty
1 year
Applications

Suitable Water Types

ORP reflects the redox capacity of water and helps operators judge disinfection and oxidation-reduction endpoints. Select the housing and installation for your process below.

Disinfection and water supply

5
Drinking WaterDisinfectionTap WaterSecondary SupplySwimming PoolReverse Osmosis

Municipal & Environmental

5
Wastewater TreatmentWastewater TreatmentSurface WaterRiver MonitoringAquaculture

Industrial Processes

4
PowerChemicalPharmaceuticalFood

Circulation and dosing

4
Cooling Tower WaterDosing ControlHVAC WaterBoiler Water
Get a recommendation

Tell us your water type and installation method, and we will recommend the right ORP model

Send us your water quality, range requirements, and installation conditions. Our engineers will recommend the housing, output, and installation, then configure the ORP probe for plug-and-play connection to an 8-channel monitor.