1、 Product Overview:

Chemical Oxygen Demand (also known as COD)COD）It refers to the mass concentration of oxygen corresponding to the oxidant consumed when using strong oxidants to oxidize organic and inorganic reducing substances in water samples under certain conditions,CODIt is also an important indicator reflecting the degree of pollution of water bodies by organic and inorganic reducing substances.

This analyzer is capable of long-term unmanned automatic continuous operation according to on-site settings, and is widely applicable to industrial pollution source discharge wastewater, industrial process wastewater, industrial sewage treatment plant wastewater, municipal sewage treatment plant wastewater, and other occasions. According to the complexity of the on-site testing conditions, corresponding preprocessing systems can be selected to ensure the reliability of the testing process, accurate testing results, and fully meet the on-site requirements of different occasions.

2、 Product principle:

Heat a mixture of water sample, potassium dichromate digestion solution, silver sulfate solution (silver sulfate as a catalyst can more effectively oxidize linear fatty compounds), and concentrated sulfuric acid until165At ℃, the color of organic matter in the solution will change after oxidation by dichromate ions. The analyzer detects this color change and converts it intoCODWhen the value is output, the amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter, that isCOD.

3、 Technical parameters:

4、 Function and Features

1.Sunshine Smart Cloud Platform

Real time cloud monitoring and storage of device data 24/7. Users do not need to monitor data online. Data collection and calculation are completed by the cloud platform on the server side. They only need to turn on the monitoring system when they need data, log in to the platform, and synchronize with the cloud data platformPCView real-time and historical data information on both the desktop and mobile devices.

2. Modular design, independent operation of components, easy operation and maintenance;
3. RS485/RS232The4-20mAMultiple signal outputs such as relays;
4. Automatic, manual, timed4-20mAVarious control sampling methods such as switch quantity;
5 Automatic compensation for measuring light source attenuation, good stability, and small drift;
6. Wide measurement range, fast sampling speed, and high accuracy;
7. Low reagent usage, minimal secondary pollution, and easy maintenance;
8. High precision of photoelectric measurement and high operational reliability;
9. Industrial grade color touch screen, user-friendly interface, configuration design, and easy operation.
10. Waste liquid is collected in two types: reagent waste liquid and cleaning waste liquid.

11. Add quality control reverse control function to reduce the workload of maintenance personnel.

5、 Application industry

Customized water collection and distribution system, monitoring station building and supporting facilities for pollutant discharge enterprises, data acquisition instruments (uploaded to the data center of the Environmental Protection Bureau).