COD · Chemical Oxygen Demand Sensor

M200 COD Digital Sensor

UV254 dual-wavelength measurement tracks COD from 0 to 5,000 mg/L without reagents or secondary pollution. Fast response, automatic turbidity compensation, IP68 protection, and RS485 output make it suitable for continuous wastewater and surface-water monitoring.

COD CODSensor
5000 mg/L
Max Range
254 nm
UV
Reagent-free
NoneSecondaryPollution
IP68
Full protection · RS485
Features

Reagent-free UV254 COD monitoring with no waste generation

Dual-wavelength UV measurement with turbidity compensation requires no reagents or peristaltic pump, produces no secondary waste, and delivers fast, low-cost monitoring for unattended operation.

Advanced Circuitry

High StabilitySpectral Circuit,254nm Absorption SignalHigh-precision Acquisition,Anti-interference.

Easy Installation

Submersion and flow-through options with a standard cable for quick, reagent-free deployment.

Industrial-grade Protection

IP68 full protection, corrosion-resistant housing + self-cleaning, adapts to wastewater on-site.

Fast Response

UV MeasurementSecond-level Response,None Digestion,Low O&M Volume.

Model Selection

COD Sensor Model Overview

The series supports multiple installation methods and water types. Filter by installation method, then add a model to your selection list or contact our engineers for verification.

M200-COD-01
RS485 Digital
Submersion · General Purpose
Range0–1000 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing Material304 Stainless Steel
WastewaterBiological TankMunicipal
M200-COD-02
RS485 Digital
Flow-through - Online Type
Range0–1000 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing MaterialPOM
Effluent monitoringdischarge outletreclaimed water
M200-COD-03
RS485 Digital
Submersion - High Range
Range0–5000 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing Material304 Stainless Steel
High-concentration wastewaterChemicalInfluent
M200-COD-04
4-20mA Analog
Submersion · Analog Output
Range0–1000 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing Material304 Stainless Steel
RiverOpen ChannelLandscape Water
M200-COD-05
RS485 Digital
Flow-through - Low Range
Range0–100 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing MaterialPOM
Surface WaterDrinking Water SourceRiver Monitoring
M200-COD-06
RS485 Digital
Submersion - With Self-cleaning
Range0–5000 mg/L
Measurement PrincipleUV254 Dual-Wavelength
CompensationTurbidityCompensation
Housing Material304 Stainless Steel
wastewater plantInfluentAquaculture
Specifications

Complete Specifications

General specifications for the series. Range, housing, and output vary by model and are confirmed during selection.

Measured Parameter
COD(COD)
Measurement Principle
UV254 dual-wavelength absorption
Measuring Range
0–100 / 0–1000 / 0–5000 mg/L(stepped)
Compensationmethod
TurbidityAutomaticCompensation
MeasurementFeatures
Reagent-free,NoneSecondaryPollution
Temp. Measurement range
0.0–60.0°C
Pressure Range
0–4 bar
Housing Material
304 Stainless Steel / POM(By Model)
Process Connection
G3/4 · NPT3/4
Cable Length
Standard 5m (Customizable)
Protection Rating
IP68
Power Supply
DC9–30V(recommended DC12V)
Cleaning Method
Self-cleaning(Optional)
Electrical Connection
RS485 (MODBUS-RTU) or 4-20mA Analog
Installation
Submersion / Flow-through
Warranty
1 year
Applications

Suitable Water Types

COD indicates the organic load in water and is a core parameter for wastewater discharge and surface-water monitoring. Reagent-free UV254 monitoring supports long-term operation without secondary waste. Choose the range and housing for your application below.

Wastewater & Discharge

5
Wastewater TreatmentEffluent monitoringdischarge outletBiological Tankreclaimed water reuse

Drinking Water Source

4
Surface WaterDrinking Water SourceRiver MonitoringReservoir

Industrial wastewater

4
ChemicalPharmaceuticalFoodTextile Dyeing

Environmental Monitoring

3
Landscape WaterOpen ChannelRiver
Get a recommendation

Tell us your water type and range, and we will recommend the right COD model

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