Online Residual chlorine sensor uses a negative pulse of specific voltage amplitude applied between the polarized electrode and the reference electrode to selectively select free chlorine to participate in the reaction, so that it can undergo an electrochemical reaction at the cathode of the electrode, thus forming a current signal proportional to the concentration of free chlorine. The meter calculates the concentration of free chlorine by collecting and analyzing the current signal, so the meter has the characteristics of strong selectivity, no need to replace parts, small maintenance, long electrode life and high reliability.Online residual chlorine sensors are commonly used in drinking water treatment plants, canneries, drinking water distribution networks, swimming pools, cooling circulating water, water treatment projects, etc. Continuous monitoring of residual chlorine levels in aqueous solutions.

Product Features

✅RS-485 transmission interface, MODBUS-RTU communication protocol, two channel communication.

✅Power supply and output isolation design to ensure electrical safety.

✅Built-in protection circuit, enhance anti-interference ability, to adapt to complex environment.

✅With automatic temperature compensation.High stability,high accuracy.

Technical parameter

Name	Online Residual chlorine Sensor
Model	YCH630
Principle	Constant voltage method
Range	0-20mg/L
Accuracy	±2% FS or ±0.01mg/L
Resolution	0.01mg/L
Dimension	Φ30*233mm
Protection Level	IP68
Flow rate	20-40L/h
Isolation strength	2500Vrms
Output Signal	Support RS-485/Modbus protocol
Operating Temp.	-10℃-110℃
Assembly	Input Type/flow-through type
Power Supply	DC 9-24V, current ＞1A
Cable Length	5 meters (default),Customizable
Housing Material	Polyacetal resin, polytetrafluoroethylene, gold, silver, conductive rubber

Application area

✅Drinking water treatment

•Monitor residual chlorine concentrations in water from waterworks and at the end of the network to ensure a safe water supply

•Adjust chlorination with real-time data to reduce disinfection costs and improve treatment efficiency.

✅Industrial Process Water Management

•For cooling circulating water, boiler water and other scenarios to prevent microbial growth and equipment corrosion.

•Monitor the residual chlorine concentration of process water in pharmaceutical, food processing and other industries to ensure production safety and product quality.

✅Swimming pools and water recreation facilities

•Real-time monitoring of residual chlorine content to ensure that the water quality meets hygiene standards (accuracy up to 0.01 mg/L).

✅Environmental protection and wastewater treatment

•Detect the residual chlorine concentration at the effluent of wastewater treatment plants to avoid excessive disinfectant entering the environment.

•Monitor the disinfection effect of medical wastewater to ensure that it meets the standards. •Analyze chloride pollution in surface water and groundwater to support environmental protection decision-making.

✅Special industrial scenarios

•Apply to paper making, chemical industry and other industries to monitor wastewater discharge and prevent destroying water ecological balance.

•Microbiological control of cooling water systems in power plants.

Product Advantages