【 Model recommendation: TH-S1S, manufacturer of meteorological and environmental monitoring instruments and equipment, Yunjing Tianhe supports customized services for merchants. You can rest assured when choosing Shandong Yunjing Tianhe. 】 The function of the online COD turbidity temperature sensor for water quality - real-time monitoring of pollution diffusion range and degree for emergency response. The online COD turbidity sensor is an intelligent device that integrates dual parameter monitoring functions of chemical oxygen demand (COD) and turbidity. It uses electrochemical, optical or composite sensing technology to monitor the concentration of organic pollutants (COD) and suspended particulate matter content (turbidity) in water in real time and continuously, providing key data support for water environment monitoring, sewage treatment, industrial emission control and other scenarios. Real time monitoring enables real-time and continuous monitoring of COD values and turbidity in water bodies, without the need for cumbersome pretreatment steps, and can quickly obtain results. The electrochemical or optical principles used for high precision and stability, as well as high-precision measurement techniques, ensure the accuracy and stability of data. Automatic calibration and self diagnosis can automatically calibrate and self diagnose, reduce human error, and improve monitoring efficiency. Intelligent analysis and early warning can detect water quality abnormalities in a timely manner through the analysis and processing of large amounts of data, and send warning information to relevant departments through the warning system, so as to take timely measures for processing. It also integrates temperature measurement function, eliminating the influence of water temperature on COD and turbidity measurement through a built-in high-precision temperature sensor (accuracy ± 0.3 ℃).

1、 Working principle

The sensor uses two light sources for measurement, one for COD measurement and the other for turbidity measurement,

Because organic matter dissolved in water has an absorption effect on ultraviolet light, COD values can be measured through the transmittance of the light source, and turbidity compensation can be automatically performed through turbidity measurement. At the same time, temperature is collected for temperature compensation.

2、 Technical parameters

3、 Size/Installation

1. Dimensional drawing

2. Wiring diagram

The cable is a 5-core shielded wire:

Red wire - power wire, black wire - ground wire, green wire -485A, white wire -485B

3. Installation

Attention: The sensor should not be installed upside down and should be installed at an angle of at least 15 degrees.

4、 Maintenance and upkeep

Sensor maintenance:

If the sensor needs to be cleaned, warm water and an appropriate amount of detergent can be used for cleaning.

Note:

Avoid strong vibrations that can damage the transparent glass in front of the ring, and do not scratch it with hard objects.

5、 User calibration

The sensor has undergone rigorous calibration before leaving the factory and generally does not require user calibration. If user calibration is performed, the command to restore the factory can be executed.

5.1 Zero point calibration

Insert the sensor into the container, use distilled water or purified water for the solution, wait for 30 seconds for the value to stabilize, and then perform turbidity zero calibration and COD zero calibration according to the communication instructions.

5.2 Slope calibration

Insert the sensor into the solution container, and once the turbidity value of the solution is known, wait for 30 seconds for the value to stabilize before calibrating the turbidity slope according to the communication instructions.

Insert the sensor into the solution container. Once the COD value of the solution is known, wait for 30 seconds for the value to stabilize before calibrating the COD slope according to the communication instructions