Organic Matter SensorsTL-COD Series
COD Sensor
Organic Matter Sensors
COD Sensor
TL-COD Series
Reagent-free UV-Vis COD sensor. Range 0–1500 mg/L, simultaneous turbidity compensation, IP68.
Request a QuoteProduct Overview
The TL-COD Series uses UV-Vis absorption spectroscopy for reagent-free online COD measurement. Three models cover different material requirements and output options. Simultaneous turbidity measurement enables automatic compensation.
Working Principle
The sensor uses a continuous online measurement principle with automatic temperature compensation. The measurement signal is processed by an integrated microprocessor and transmitted via RS485 Modbus RTU for direct integration with PLCs, data loggers, and SCADA systems. The 4–20 mA analog output provides compatibility with legacy control systems.
Wiring & Signal Output
Power supply: 12–24 V DC (standard); 220 V AC with adapter
Primary output: RS485 Modbus RTU (address configurable 1–247)
Analog output: 4–20 mA (proportional to measured value)
Relay output: 2 × SPDT relay for alarm / dosing control
Communication: Modbus RTU function codes 03 / 06 / 16
Cable entry: M16 cable gland, IP68 submersible cable available
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement Principle | UV-Vis absorption spectroscopy |
| COD Range | 0–200 / 0–500 / 0–1500 mg/L |
| Additional Parameters | Turbidity / BOD / TOC (model dependent) |
| Accuracy | ±5% FS |
| Working Conditions | 0–45°C, 0–2 Bar |
| Signal Output | RS485 Modbus RTU / 4-20mA |
| Power Supply | 12–24 VDC |
| Installation | Submerged |
| Protection | IP68 |
| Material | POM / SS316L |
Key Features
- Reagent-free — no chemical costs or waste
- Simultaneous turbidity compensation
- Three COD range options
- Advanced models include BOD and TOC
Typical Applications
Municipal wastewater effluentIndustrial discharge monitoringRiver/lake water qualityProcess control
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