Smart Residual Chlorine Sensor Safer Smarter Water Monitoring

In modern water treatment processes, accurate monitoring of residual chlorine is not only critical for water safety, but also has a direct impact on public health and the stability of industrial processes.The Firstrate FST100-YL106 Smart Residual Chlorine Sensor is a high-performance on-line monitoring device designed to meet this need. It provides reliable residual chlorine concentration data for a variety of applications such as drinking water treatment, industrial process water and swimming pool management.

The Smart Residual Chlorine Sensor employs advanced electrode measurement technology to analyze residual chlorine levels through highly sensitive potential changes, ensuring fast response times and high accuracy. Built-in dual high impedance differential amplifiers provide stable operation even in electromagnetic complex industrial environments and strong anti-interference capability to ensure long-term stability and data accuracy.

The interface design is highly compatible, supporting standard RS485 communications and Modbus/RTU protocols for easy integration with PLCs, DCSs, logging instruments and industrial control systems for seamless remote data acquisition and intelligent coordination. 4-20mA analog signal output versions are also available to meet the needs of legacy systems.

The sensor housing is made of PC and stainless steel composite material with an IP68 protection rating, making it perfectly suited for long-term on-line monitoring in harsh environments. Its flexible mounting design utilizes a standard NPT 3/4 threaded connector for quick immersion, pipe or tank mounting, greatly simplifying field deployment.

The measurement range of the intelligent residual chlorine sensor covers 0–20mg/L, with an accuracy of ±2% FS, fully complying with national standards for drinking water residual chlorine levels and industrial water quality management requirements. Its pressure resistance of up to 1 bar ensures adaptability to various high-pressure environments.

As a high-performance sensor integrating intelligence, stability, and user-friendliness, the intelligent residual chlorine sensor has been widely applied in municipal water supply plants, food and beverage production, pool water treatment, reverse osmosis membrane protection, and other fields. It is not only a vital tool for ensuring water quality safety but also a key component in advancing the intelligent upgrade of water treatment systems.

FIRSTRATE is committed to delivering efficient, precise, and reliable water quality monitoring solutions to users across industries through professional expertise and high-quality products. The intelligent residual chlorine sensor will be the ideal choice for your water quality safety management.