Suzhou Delfino Environmental Technology Co., Ltd.
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The Chemical Oxygen Demand (COD) is the amount of oxidant consumed when treating water samples with a strong oxidizing agent under specific conditions. It indicates the level of reducing substances in water. Higher COD values suggest more severe organic pollution.
Traditional methods include acidic potassium permanganate oxidation (lower oxidation rate but simpler) and potassium dichromate oxidation (higher oxidation rate and better reproducibility). The Duruifuno COD351 sensor adopts an innovative ultraviolet absorption method, measuring organic matter content in wastewater at specific wavelengths without reagents, offering low maintenance, pollution-free operation, and cost-effectiveness.
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| Parameter | Specification |
|---|---|
| Model | COD351 |
| Measuring Principle | UV254 ultraviolet absorption method |
| Measuring Range (COD) | COD351L: 0.75~500mg/L COD351H: 1~1500mg/L |
| Resolution (COD) | 0.01mg/L |
| Accuracy (COD) | ±3% or 0.5mg/L |
| Measuring Range (TOC) | COD351L: 0.3~200mg/L COD351H: 0.4~600mg/L |
| Resolution (TOC) | 0.01mg/L |
| Measuring Range (Turbidity) | COD351L: 0~300NTU COD351H: 0~1000NTU |
| Operating Temperature | 0~45°C |
| Protection Grade | IP68 |
| Working Pressure | 1Bar |
| Cleaning Method | Rubber scraper |
| Power Supply | 12~24V DC |
| Output | RS485, Modbus RTU protocol |
| Dimensions | Diameter 60mm, Length 215mm |
| Cable Length | 10m (customizable) |
| Shell Material | POM and 316L stainless steel |
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The COD Sensor comes with an optional single-parameter COD Controller (DUC2-COD) that connects via digital interface to display TOC, COD, TSS, and converted BOD values. We also offer multi-parameter sensors that can connect with various water quality sensors for simultaneous measurement. Contact us for more information about our UV254nm Online COD Probe, RS485 Digital COD Sensor, and Digital UV COD Probe solutions.
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