Ensure safe and efficient disinfection with our Online Residual Chlorine Analyzer, designed for real-time, continuous monitoring of residual chlorine in water and wastewater systems. With a measuring range of 0–20 mg/L, this analyzer is ideal for applications requiring precise chlorine control in high-range disinfection processes, industrial water treatment, and municipal facilities.

Product Overview

Our Residual Chlorine Analyzer accurately measure the remaining (residual) chlorine concentration in treated water. This analyzer operates without the need for reagents, offering low maintenance and long-term stability even in challenging water conditions. Designed for use in potable water, cooling towers, wastewater effluent, RO pre-treatment, and industrial process water, this system ensures that residual chlorine levels stay within safe and compliant limits — protecting both infrastructure and public health.

Key Features

Wide Measuring Range: 0–20 mg/L (ppm)
Ideal for standard and high-range disinfection applications.

High-Accuracy Amperometric Sensor
Provides reliable, real-time residual chlorine measurements with fast response.

Reagent-Free Operation
Low operating cost and minimal maintenance — no need for DPD or chemical reagents.

Automatic Temperature Compensation
Built-in temperature sensor ensures accurate readings under varying process conditions.

Optional pH Compensation
Supports external or integrated pH sensor input for accurate chlorine readings in variable pH water.

Digital Display Unit
OLED display for real-time chlorine, temperature, and system status information.

4–20 mA Output + RS485 (Modbus)
Standard industrial outputs for integration with PLC, DCS, or SCADA systems.

Configurable Alarm Relays 
High and low chlorine setpoints with relay outputs for process control or safety shutdown.

Wall or Panel Mount Options
Flexible installation to suit any plant layout or enclosure.

Typical Applications

Municipal Water Treatment – Monitor residual chlorine after chlorination

Wastewater Effluent Monitoring – Ensure proper disinfection before discharge

Cooling Towers & HVAC – Control biofouling through chlorine residual monitoring

Industrial Water Treatment – Chlorine monitoring in process or recycled water

RO & UF Systems – Pre-treatment chlorine measurement to protect membranes

Food & Beverage Industry – Chlorine residual control in wash water and CIP systems

Swimming Pools / Aquatic Facilities – Safe and stable chlorination control