Water COD Sensor

Quantifies the total load of reducible organic compounds (including refractory organics) in water
Assesses wastewater treatment efficiency and compliance with industrial discharge standards
Provides early warning of eutrophication risks and supports ecological conservation decisions

Reagent-free operation – UV absorption method eliminates chemical usage.
Multi-parameter measurement – Simultaneously monitors COD, turbidity, and temperature.
Automatic compensation – Corrects for turbidity interference and temperature effects.
Low maintenance – Integrated cleaning brush prevents biofouling; 18-month maintenance cycle.
Robust communication – Supports Modbus RTU and 4–20 mA output for industrial integration.

◀◀ Product Parameters ▶▶

Parameter	Specification
Measurement Principle	Dual-wavelength UV absorption method
Measurement Range	- COD: 0–200.0 mg/L (Resolution: 0.1 mg/L) - Turbidity: 0–200.0 NTU (Resolution: 0.1 NTU) - Other ranges available: 0–500.0 mg/L, 0–1500.0 mg/L
Accuracy	- COD: ±5% of reading (0–500 mg/L), ±10% (1000–1500 mg/L) - Temperature: ±0.3°C
Response Time (T90)	<30 seconds
Detection Limit	- 0.2 mg/L (0–200 mg/L range) - 0.4 mg/L (0–500 mg/L range)
Calibration	Two-point calibration (zero & slope)
Cleaning Mechanism	Built-in cleaning brush
Temperature Compensation	Automatic (Pt1000 sensor)
Output Options	- RS-485 (Modbus RTU protocol) - 4–20 mA analog output (optional)
Power Supply	12–24 V DC - Power consumption: 0.4 W (operating), 2 W (cleaning)
Environmental Conditions	- Operating temperature: 0–45°C - Pressure: ≤0.2 MPa - Storage temperature: -5–65°C
Material	316L stainless steel housing
Installation	Submersible (3/4" NPT thread), IP68 protection
Dimensions	Refer to dimensional drawing in manual

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