Walchem disinfection sensors offer a cost-effective and reliable solution. These continuously and directly measure chemical concentration, without the use of reagents. We offer sensors, in different concentration ranges, for free chlorine / bromine, total chlorine, chlorine dioxide, ozone, peracetic acid and hydrogen peroxide.


  • Membraneless disinfection sensors
  • Disinfection of hot drinking water systems as currently required by new ASHRAE standards up to 70 ° C (158 ° F)
  • High pressure sample loops where water cannot be discharged to open atmosphere up to 8 bar (117 psi)
  • Membrane disinfection sensors
  • Free Chlorine and ClO2 Sensors
  • Designed for higher pressure and temperature, with clean water applications
  • 3-electrode amperometric sensors
  • The measuring and counter electrodes are in direct contact with the sample.
  • The reference electrode is isolated from water by a housing filled with electrolytes.


  • Low maintenance
  • Wide range of applications
  • High efficiency
  • Low-cost impact
  • Smart disinfection
  • Compact systems
  • Lower energy consumption
  • Improved process quality
  • No waste (sample can be returned to process)


  • Cooling tower
  • Food and drinks
  • Drinking water
  • sewage water
  • Swimming pools
  • Hotels
  • Buildings
  • Private condos
  • Schools or Universities
  • Cooling tower
  • Food and drinks
  • Drinking water
  • Sewage water
  • Swimming pools
  • Hotels
  • Buildings
  • Private condos
  • Schools or Universities

Practical examples

Automatic chlorine gas injection system - Blue Water Consortium

The Consorcio Agua Azul S.A., Concessionaire company of the Project "Optimal Use of Surface and Subterranean Waters of the Chillón River", is dedicated to the production of drinking water for SEDAPAL. By applying our solution we ensure the destruction of waterborne pathogens under environmental conditions and in a short time. In the doses used in disinfection, it does not constitute a health risk and leaves a residual effect (free residual chlorine) that protects the water from subsequent contamination in the distribution network.

Residual chlorine dosing and control systems - NCH

Through our strategic partner NCH we have supplied many automatic chlorination systems with efficient and reliable control, guaranteeing the required ppm in the process. Thanks to our highly durable Chlorine sensors that make chlorine measurement and control systems ideal for water and effluent treatment applications. With a simple, low-cost maintenance program that can be performed on-site.

Automatic Chlorination System - Mina Justa

Chlorination skid designed and supplied in order to eliminate the proliferation of marine life along the route of pipes (600 meters approx) before reaching the seawater filtering system. Dynaflux was in charge of designing and manufacturing the sodium hypochlorite automatic storage and dosing skid for the correct and efficient addition of this reagent constantly (01 dosing pump) and also intermittently (01 dosing pump) with the aim of performing doses of shock, plus their respective stand-bye bomb.

Contact a specialist

Raul Chacaltana

Commercial manager
+51 996 800 977
[email protected]


+51 631 6868
[email protected]

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