Walchem disinfection sensors

Amperometric disinfection sensors

A wide range of membrane disinfection sensors for detecting the level of oxidisers in water treatment processes

Walchem’s amperometric disinfection sensors offer a cost-effective and reliable solution to your disinfection control requirements. The sensors continuously and directly measure the chemical concentration, without the use of reagents

Key benefits:

Low maintenance – no costly reagents or tubing to replace
Broad range of applications – wide variety of oxidizsers and measurement ranges
Fast response – continuous measurement technique
No waste – the sample can be returned to the process

Typical applications

  • Hospitals
  • Schools
  • Universities
  • Swimming pools
  • Cooling towers
  • Food & beverage
  • Drinking water
  • Wastewater


Key information

SensorRange (ppm)CalibrationOperating temp
Chlorine dioxide
0 to 50°C
Peracetic acid
Weekly, Titration w/ Thiosulfate
0 to 45°C
Hydrogen peroxide
0 to 60°C
Weekly, DPD-4
0 to 45°C
0 to 40°C

Related products

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    For high pressure, high temperature applications

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    Measure the optical density of bleach or chlorine dioxide

  • Pyxis ST-765ss Inline Sensor

    Oxidiser disinfection
    Measure free chlorine, chlorine dioxide or pH content in water

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Custom build solutions

Redefine simplicity and flexibility in cooling tower solutions with our plug-and-play service that delivers rapid installation.

We offer standard layout that serves as a solid foundation but we can be customise to meet the unique needs of any client site. We tailor the build to achieve optimal performance.

Our custom builds are popular as a comprehensive solution that's wired and seamlessly integrated meeting any site requirements. Email us today to learn more about our bespoke custom built solutions to speed up your installation and reduce operation or project downtime.


We specialise in delivering tailored product training to empower your team and enhance operational efficiency. Whether you prefer on-site sessions, at your company's location or the convenience of video conferencing, we've got you covered.

Our focus revolves around installation best practices, ensuring seamless product connectivity, and optimising maintenance procedures. Take the first step towards maximising your team's potential. Email us today to learn more about our bespoke training offerings, check availability, and embark on a journey to enhance your team's expertise.

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Sensys Ltd

Head Office
24 Vision Park
Preston Place
Upper Caldecote
SG18 9GQ

what3words: ///uptown.wisley.guests

01438 759 595

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