Chemical Oxygen Demand ( COD ) Sensor RS485 Stable And Reliable Measurement

Measuring Principle Of The COD sensor

Chemical oxygen demand is a test that measures the amount of oxygen required to chemically oxidize organic substances present in water.

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 sensor

• Consumables are not required during the measurement process

• Can measure COD, TOC, turbidity, temperature and other parameters

• Use two light sources, 254nm and 365nm UV reference light

• 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, RS-485 output, support MODBUS.

• 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 sensor

• 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

Suzhou Delfino Environmental Technology Co., Ltd. is a professional manufacturer of water analysis instruments and sensors, integrating development and production together. Our main products include online, portable water quality analysis instruments. Since its establishment, we have focused on the development and production of water quality analysis instruments.

The monitoring parameters of water quality analyzer instruments mainly include: pH, ORP, dissolved oxygen, conductivity/TDS/salinity, turbidity, SS, Chlorophyll, Blue-green algae, COD, NH4-N, NO3, free chlorine, peracetic acid and so on.

As the rapid growth of the global economy leads to increased consumption and urbanization, solid waste generation has increased significantly, directly affecting the water and wastewater treatment industry. Daruifuno aims to provide solutions to various industries and fields and create a cleaner and healthier drinking water environment for the earth.

Our products mianly application for follows industry：Municipal sewage water treatment plant, industrial wastewater treatment plant, Chemical, Petroleum, Papermaking, Food and drinking, Medicine, Electroplating, PCB plant, fish farm,Lake/river/ocean/groundwater/surface and so on.

Our company was established in 2015, but our predecessor has been committed to the water quality testing industry for more than 10 years. At present, we have our own R&D center with many senior engineers with more than 10 years of experience in the research and development of water quality analyzers and water quality sensors, and are equipped with strict front-line production workers, professional quality inspection personnel and testing equipment to check every process.

As a high-tech enterprise in China, our production is strictly in accordance with ISO9001 from raw material sources to finished equipment. After years of efforts, the company has obtained more than 20 patent certificates, high-tech enterprise certificates, CE, SGS, etc. He has accumulated rich practical experience in the field of water quality testing and has unique insights in the field of water quality testing.

Our company takes "reasonable prices, efficient production time, and good after-sales service" as its purpose and adheres to the business philosophy of "based on quality and creating value for customers". At present, the company is actively exploring the international market and actively promoting its own brands and products. It has been exported to Asia, Southeast Asia, Europe, Africa, and South America, with customers in more than 50 countries and regions around the world. And hope to develop together with customers for mutual benefit with high-quality products and sincere services.