Walchem disinfection sensors: free chlorine/ bromine, total chlorine, chlorine dioxide, peracetic acid, ozone & hydrogen peroxide
disinfection electrode manifold
Walchem’s amperometric disinfection sensors offer a cost effective and reliable solution to your disinfection control requirements. Compatible with the new W100, WDIS and WebMaster® series controllers, the sensors continuously and directly measure the chemical concentration, without the use of reagents. The sensors are available 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 oxidisers and measurement ranges
  • fast response; continuous measurement technique
  • no waste; the sample can be returned to the process
  • long-lasting amperometric electrodes with rugged membranes
  • integrated temperature compensation
  • relatively insensitive to changes in sample flow rates
  • large flow cell openings which prevent clogging
  • excellent long-term stability
Walchem non-membrane free chlorine or chlorine dioxide disinfection sensors
Non-membrane chlorine dioxide/free chlorine disinfection sensor
Sensors for applications with high pressures and temperatures. For example: cooling tower, food/ beverage, drinking water, wastewater and swimming pool.
  • the disinfection of hot potable water systems (up to 70 deg C) as currently required by the new ASHRAE standards for hospitals, schools, universities
  • high pressure (up to 8 bar/117 psi) sample loops where the water cannot be discharged to open atmosphere, such as hot tubs and cooling towers
  • free chlorine and chlorine dioxide sensors
  • designed for higher pressure and temperature, clean water applications
  • amperometric 3-electrode sensors
  • the measuring and counter electrodes are in direct contact with the sample
  • low maintenance. No costly reagents or tuning to replace
  • fast response, continuous measurement technique
  • no waste. The sample can be returned to the process