Residual Chlorine Sensor

The Guardian of Water Safety: Veswe Residual Chlorine Analyser
In the world of water treatment, there is no margin for error. Whether you are managing a municipal drinking water plant, ensuring the hygiene of a public swimming pool, or controlling disinfection in an industrial cooling tower, knowing your exact chlorine levels is non-negotiable. Enter the Veswe Residual Chlorine Analyser, a professional-grade instrument designed to deliver continuous, accurate, and reliable measurements of free chlorine in real-time.
This isn’t just a monitor; it’s a complete safety ecosystem. From our compact integrated sensors to our robust industrial-grade meters, the Veswe residual chlorine sensor family is engineered to handle the most demanding environments while simplifying your workflow.

Revolutionary Membrane-Free Technology
Let’s be honest: traditional chlorine sensors are high-maintenance. They require constant membrane changes and reagent refills. The Veswe residual chlorine analyser changes the game with its advanced membrane-free constant potential sensor design. By utilizing a three-electrode system with a double salt bridge reference, this device eliminates the need for consumables entirely.
This means no more messy reagent filling, no more fragile membranes to puncture, and significantly reduced downtime. It is a free chlorine analyzer built for simplicity, offering a “set it and forget it” experience that keeps your operations running smoothly.

Uncompromising Accuracy & Stability
Water chemistry is complex, but your data shouldn’t be. The Veswe chlorine sensor features a high-purity platinum electrode that provides exceptional sensitivity and stability. With an internal anti-interference circuit design, it cuts through electrical noise to deliver precise readings with a resolution of 0.01 mg/L.
Plus, every unit comes equipped with a built-in temperature sensor for automatic temperature compensation. Whether you are monitoring chlorination in wastewater treatment at 20°C or tracking chlorine for water treatment in a heated industrial process at 50°C, the Veswe residual chlorine analyser adjusts instantly to ensure your data remains accurate regardless of thermal fluctuations.

Two Powerful Configurations for Every Need
We understand that one size doesn’t fit all. That’s why we offer two distinct solutions under the Veswe banner:
Integrated Chlorine Sensor (VRS-CL-N01): Perfect for direct integration into existing systems. With an IP68 waterproof rating, this compact residual chlorine sensor can be submerged up to 20 meters. It uses RS485 ModBus output, making it easy to connect to PLCs or our handheld analyzers for on-the-spot data verification.
Industrial-Grade Chlorine Meter (VRS-CL): For heavy-duty applications, this unit combines a rugged data collector (IP65 rated) with a high-performance electrode. It supports multiple signal outputs including 4-20mA, 0-10V, and even LoRaWAN for wireless transmission. Optional LCD displays allow for local viewing, giving you total control over your disinfection process.

Built for the Long Haul
Durability is in our DNA. The electrode housing is treated for corrosion resistance, and the standard 3/4 NPT thread design ensures secure, leak-proof installation in pipes, tanks, or flow cells without needing special tools. With a service life of approximately one year for the electrode and a robust build quality, this residual chlorine analyser is an investment that pays off in reliability.
Maintenance is refreshingly simple. A quick rinse with clean water and an occasional gentle wipe of the platinum ring are usually all that’s required to keep your chlorine sensor performing at its peak.

Versatile Applications Across Industries
From protecting public health to optimizing industrial processes, the Veswe residual chlorine analyser is the trusted choice for:
Drinking Water Plants: Ensuring safe distribution networks and finished water quality.
Swimming Pools & Spas: Maintaining effective disinfection levels to protect swimmers.
Wastewater Treatment: Verifying effluent safety before discharge.
Food & Beverage: Controlling microbial growth in process water.
Aquaculture: Managing water quality for healthy stock.
Technical Specifications at a Glance:
Measurement Range: 0-2 / 0-10 / 0-20 mg/L (Optional)
Resolution: 0.01 mg/L
Response Time: <30 Seconds
Protection: IP68 (Sensor) / IP65 (Transmitter)
Output: RS485, 4-20mA, 0-5/10V, LoRaWAN
Power: DC 7~30V Wide Voltage

The Bottom Line:
Don’t leave your water safety to guesswork. Equip your facility with the Veswe Residual Chlorine Analyser. Whether you need a sleek free chlorine analyzer for a tight space or a fully featured industrial meter for remote monitoring, we have the solution. It’s precision engineering meets operational simplicity, ensuring that every drop of water you manage is safe, compliant, and perfectly balanced.