UV254nm RS485 Chemical Oxygen Demand Analyzer Probe Modbus RTU

Chemical Oxygen Demand Probe UV254nm COD Sensor With RS485 Modbus RTU

The COD probe of Daruifuno adopts Spectral Absorption Coefficient (SAC) method, which can measure the absorption of light at a specific wavelength. The sensor doesn't need consumables during the measurement process. The COD electrode can measure COD, TOC, turbidity, temperature and other parameters. It uses two light sources, 254nm and 365nm UV reference light.

Measuring Principle Of The COD Probe

Many organic substances dissolved in water absorb ultraviolet rays, and the electromagnetic spectrum ranges from 200 to 390 nm. The simplest form of measurement using this principle is the Spectral Absorption Coefficient (SAC), which can measure the absorption of light at a specific wavelength. Traditionally, a wavelength of 254nm is used because it is located in an area sensitive to organic absorption.

Therefore, by measuring the degree of absorption of ultraviolet light with a wavelength of 254 nm by organic substances, the substitution of organic substances in water can be detected.

The chemical oxygen demand(COD) sensor can be used in a wide range of applications.

Advantages Of The COD Probe

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• Automatically eliminate the interference of suspended solids and compensate for the interference of turbidity

• Excellent test performance, achieve more stable and reliable measurement values

• Integrated self-cleaning brush, small size and convenient to install, continuously monitor water quality online to prevent biological attachment and effectively reduce the frequency of maintenance.

• Digital sensor, RS485 output, support MODBUS communication.

• Drop-in installation, the tested sample does not need to be digested, the analysis speed is fast, no reagents need to be added, and there is no special sampling equipment.

• The measurement process responds quickly in real-time without waiting.

Applications Of The COD Probe

• Monitoring for compliance
• Optimization of wastewater treatment processes
• Development of process control algorithms
• Identification of cross-connected sewers
• Identification of pollution sources
• Rapid assessment of incident severity
• Advanced treatment monitoring & protection
• Effluent pollution

Technical Parameters

The Matched COD Controller Parameter