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

Product Advantages