Disinfection Sensors

In water treatment, chemicals like chlorine and bromine are used within controlled limits to ensure safe and effective disinfection. When applied in excessive or insufficient quantities, these chemicals can pose risks to human health. To prevent this, disinfection sensors are employed to monitor oxidizer levels throughout the treatment process.

Walchem provides a wide range of disinfection sensors designed to accurately measure various chemical concentrations. Their amperometric disinfection sensors deliver a reliable and cost-efficient solution for precise disinfection control. These sensors are fully compatible with all Walchem controllers and continuously measure chemical concentration directly without the need for reagents.

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Key Benefits:

Walchem disinfection sensors, in varying ranges of concentration, for free chlorine/bromine, total chlorine, chlorine dioxide, ozone, peracetic acid and hydrogen peroxide. Whether the application is a cooling tower, food and beverage, drinking water, wastewater, or swimming pool, these sensors are the ideal solution.

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

Categories of Disinfection Sensors:

We offer sensors with and without membranes to detect varying ranges of concentration of chemicals such as free chlorine/bromine, total chlorine, chlorine dioxide, ozone, peracetic acid, chlorine gas, sodium hypochlorite, calcium hypochlorite, stabilized bromine products, and ozone among others. Here are two broad categories of disinfection temperature sensors we offer.

  • Membrane sensors: Membranes may be either hydrophilic or hydrophobic, and may or may not be porous. Each sensor has the membrane and internal electrolyte required to perform its intended function.
  • Non-membrane sensors: Walchem offers non-membrane chlorine and chlorine dioxide sensors that comprise an amperometric sensor assembly, cable, and a flow cell. They measure the disinfectant level in drinking water. The disinfection of hot potable water systems as currently required by the new ASHRAE standards is up to 70 °C (158 °F), especially for hospitals, schools, and universities.