DioSense - Chlorine Dioxide Analyzer



Online, continuousChlorine Dioxide Analyzers, Chlorine Dioxide Monitors, Chlorine Dioxide Meter and Chlorine Dioxide Controllers make up the DioSense range which utilizes the very latest and best chlorine dioxide sensor available in the world today. It is a membraned device which is insensitive to chlorine, uses no reagents, is extremely stable, and has reduced maintenance and reduced whole life costs.



The DioSense chlorine dioxide sensors which give a dissolved chlorine dioxide measurement in ppm or mg/l and flow cells are available with different chlorine dioxide controllers giving you the same great performance with different communication, display, and control options. With the DioSense range of residual chlorine dioxide analyzers, you get everything that you need – and nothing that you don’t.



According to the EU Directive 98/83/EC, the operators of waterworks must ensure that the levels of harmful chlorite (ClO) in drinking water remain below the specified limit of 0.2 mg/l. The monitoring of Chlorite at the same time as Chlorine Dioxide is also a European requirement.



Key Benefits


  • Amperometric sensors – continuous online chlorine dioxide ppm measurement
  • No chemical reagents – lower cost of ownership
  • Stable and reliable – excellent process control
  • Suitable for all potable and process water
  • Up to 6 months between maintenance
  • No interference from residual chlorine
  • Tolerant of water containing detergent








Chlorine Dioxide Sensor Probe


Application:                                         All kinds of water treatment (e.g. bottle washing machine, CIP-plants)


Type:                                                     Membrane covered, amperometric 2-electrode system


Measurand:                                         Chlorine Dioxide


Sensor ranges:                                  0-0.50 mg/l; 0-2 mg/l; 0-5 mg/l; 0-10 mg/l; 0-20 mg/l


Working Temperature:                     >3 up to 50oC


Max. allowed Working Pressure:  1,0 bar, no pressure impulses and/or vibrations


Flow Rate:                                           Approx. 0.5 l/min (min 0.2 l/min)


pH Range:                                           pH1 to pH11


Calibration:                                         Manual using a suitable ClO2 test kit


                                                               Every 1 week to 3 months, application dependent


Interferences:                                    Cl2: does not interfere


                                                              O3: is measured with a sensitivity 25 times higher than ClO2


                                                              1% sulfuric acid or 1% nitric acid in the water have no                                                                    

                                                               influence to the measuring behavior




            Change of membrane cap:      Yearly (depending on the water quality)


            Electrolyte:                                  Every 3-6 months









Copyright @  Siam Pollutek Co.,Ltd. All Right Reseveds.