Remond RS485 Online Residual Chlorine Sensor for Drinking Water

What is residual chlorine?

Residual chlorine refers to the total residual chlorine in water, also known as total chlorine, which includes comprehensive residual chlorine and free residual chlorine. The residual chlorine value in tap water, as we commonly refer to it, refers to free residual chlorine.

The principle of the chlorine sensor 

According to different measurement principles, residual chlorine sensors can be divided into diaphragm type polarographic (Clark) sensors and constant voltage type sensors, used for continuous monitoring of residual chlorine.

Constant voltage principle electrode is used to measure residual chlorine, chlorine dioxide and ozone in water. The constant voltage measurement method is to maintain a stable potential at the electrode measurement end, and different measured components generate different current intensities under this potential. It consists of two platinum electrodes and a reference electrode to form a microcurrent measurement system. The residual chlorine, chlorine dioxide and ozone in the water sample flowing through the measuring electrode will be consumed, so it is necessary to keep the water sample flowing through the measuring electrode continuously during measurement.

Chlorine sensor probe features: 

• Power supply DC9-30V
  
• 4-20mA output signal
  
• Support RS-485, Modbus/RTU protocol
  
• IP68 protection, waterproof
  
• No need controller or transmitter
  
• Can be directly connected to computer, PLC  etc
  
• Quick response, high precision
  
• 7*24 hours continuous online monitoring
  
• Flow cell installation, accurate measurement

Application:

Suitable for water treatment plants, drinking water distribution networks, swimming pools, hospitals and other wastewater and water treatment, residual chlorine and chlorine dioxide detection in swimming pools.

Free chlorine sensor specification: