Amperometric disinfection sensors

Disinfection sensors are used to detect the level of oxidisers in water treatment processes

Types of disinfection sensors and what they measure:

Chlorine sensors: Our chlorine sensors measure a wide range of concentrations of chemicals in water, and indirectly help prevent the growth of microorganisms. This is done without the use of reagents. These amperometric chlorine sensors can be used with all of our controllers for chlorine residual measurements in accordance with EPA Method 334.0.

Chlorine dioxide sensors: These are specialised sensors used to measure the concentrations of chlorine dioxide in water.

Stabilised bromine sensors: The sensors continuously and directly measure the chemical concentration, without the use of reagents. These sensors can work effectively even where ORP sensors and other amperometric sensors cannot reliably and repeatedly measure bromine that is stabilised with sulfamate. These are amperometric 3-electrode sensors and are widely used for cooling tower applications. They can withstand temperatures up to 45 °C (113 °F) and pressure up to 90 psi.

Total Chlorine: Our total chlorine sensors use microporous, hydrophilic membranes that allow measurement of all chlorine molecules, free or combined.
Peracetic Acid: The peracetic acid sensors are frequently used in food processing applications and can measure up 20,000 mg/l in water with a pH below 6.

Key benefits:

Various chemicals such as chlorine and bromine are used in specific limits in water treatment. However, if used in large or insufficient amounts they may affect human health. There are various types of disinfection sensors that can successfully detect the level of a number of chemicals. Amperometric disinfection sensors offer a cost-effective and reliable solution to your disinfection control requirements.

The sensors are compatible with Walchem controllers, and continuously and directly measure the chemical concentration, without the use of reagents.

Sensors have 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:

Sensors are available 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, stabilised bromine products, and ozone among others.

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.

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Further Reading & Guidance

Key Features of Membrane Sensors:

Whether the application is a cooling tower, food and beverage, drinking water, wastewater, or swimming pool, these sensors offer an accurate output. Here are some beneficial features of our membrane sensors.
  • They are low on maintenance and cost effective as they do not require expensive reagents or tubing replacements.
  • You can use them for a broad range of applications with a wide variety of oxidisers and measurement ranges.
  • They offer a fast and accurate response even when used for continuous measurement.
  • The sample taken is not wasted as it can be returned to the process after testing.

Typical applications:

If you need to measure the chemical levels in your process or even drinking water, these disinfection sensors are extremely useful. They're an integral part of our water treatment controllers.

We can provide various types of disinfection sensors that can be integrated to water treatment controllers as part of an effective water treatment process. These can be customised to suit specific client requirements.
Here are some application areas of our disinfection sensors, depending on their type:
  • Drinking water
  • Food processing
  • Reuse and process water
  • Swimming pools
  • Cooling towers
  • Bottle washing

Alternative products

Pyxis: ST-765ss

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Unit 9 Pond Close
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Hertfordshire
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