Chlorine Sensor & Controller

Achieve optimal concentration with high-precision free chlorine monitoring to ensure water quality and regulatory compliance.

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Electrolytic Sensing for Precise Residual Chlorine Control

Advanced Polarographic Membrane Technology

Utilizes a high-precision polarographic membrane electrode to provide continuous, real-time residual chlorine monitoring without the need for constant reagent replacement.

Ultra-Fine Resolution for Trace Detection

Engineered for strict water quality compliance with a measurement range of 0–20 mg/L and an exceptional resolution of 0.001 mg/L, capturing even minor concentration fluctuations.

Integrated Triple-Parameter Compensation

Features built-in pH and temperature sensors to provide automatic compensation, ensuring a measurement accuracy of ±1% F.S. across varying water chemistry conditions.

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Get Detailed Specifications and Quote

Download our full product datasheet or request a custom solution for your free chlorine monitoring project.

Integrated Free Chlorine Solutions

Our sensors deliver high-precision control in drinking water and swimming pool applications, maintaining the perfect balance between effective disinfection and regulatory compliance for superior water safety.

Designed for the rigors of industrial cooling water, these systems provide stable measurement and long-term reliability to prevent biofilm buildup and protect infrastructure from corrosion.

Smart Disinfectant Control Hub

Seamlessly optimized for membrane-covered amperometric systems, the ADS2 controller provides high-resolution data visualization and precise calibration for a wide range of disinfectant agents.

Equipped with programmable setpoints and relay logic, the ADS2 allows for customized automated dosing and early warning alerts to maintain precise chlorine levels without manual intervention.

Real-World Results: How We Empower You to Achieve Absolute Water Safety and Efficiency

About Chlorine

Utilizing the advanced membrane-covered amperometric principle, the sensor measures free chlorine by detecting the electric current generated from the electrochemical reduction of hypochlorous acid (HOCl) at the cathode.

The specialized selective membrane allows only chlorine molecules to permeate while blocking ionic interference, ensuring high sensitivity and a stable zero-point for precise low-level detection.

This reagent-free measurement method provides continuous real-time data with integrated temperature compensation, significantly reducing operational maintenance compared to traditional DPD colorimetric methods.

Precise residual chlorine control is essential to prevent the formation of harmful disinfection byproducts (DBPs) that threaten aquatic ecosystems and long-term environmental health. By optimizing chlorine levels, you protect local biodiversity and ensure your water discharge meets the strictest environmental sustainability standards for a greener future.

Frequently Asked Questions

Get the precise answers you need for your unique water conditions

1. What is the difference between chlorine and total chlorine measurements?
Free chlorine measures the available disinfecting power (HOCl and OCl⁻), while total chlorine includes both free chlorine and combined chloramines.
2. How does an amperometric chlorine sensor work without reagents?
It utilizes a membrane-covered electrochemical cell to generate a current proportional to the chlorine concentration, eliminating the need for chemical reagents.
3. Why do I need temperature compensation for accurate chlorine readings?
Chlorine diffusion through the sensor membrane is temperature-dependent, so integrated compensation is vital to prevent data drift in fluctuating water conditions.
4. How often should a membrane-covered chlorine sensor be calibrated?
Typically, calibration is recommended every 1–3 months, depending on your water quality stability and specific regulatory requirements.
5. Can the ADS2 controller automate chemical dosing based on real-time residual chlorine?
Yes, you can program the ADS2 with specific setpoints and PID logic to automatically trigger dosing pumps for precise, hands-free chlorine control.
6. What interferes with amperometric free chlorine sensors in industrial water?
While the membrane blocks most ions, significant shifts in pH (above 8.5) or high concentrations of surfactants can impact measurement accuracy.
7. How do I maintain consistent chlorine levels in a cooling tower system?
By using the ADS2 system for continuous real-time monitoring and automated feedback control to counteract rapid chlorine depletion from heat and organic loads.
8. Is an online chlorine analyzer more cost-effective than manual DPD testing?
Yes, it reduces long-term costs by eliminating expensive reagents, reducing manual labor, and preventing costly chemical over-dosing.