Typical application The characteristics of chlorine dioxide concentration online monitoring instrument suitable for drinking water and industrial process water disinfection and sterilization process ● Wide measurement range ● Selective membrane sensor ● Small maintenance: calibration once / 2 months; replacement of electrolyte and membrane / 6 months ● No interference from chlorine, bromine or hydrogen peroxide; O3 is interference, but O3 is not available in the general chlorine dioxide disinfection system. Measuring principle The electrolyte and permeable membrane separate the electrolytic cell from the water sample On, chlorine dioxide can penetrate the membrane; there is a fixed potential difference between the two sensors, and the current generation is proportional to the concentration of chlorine dioxide; on the cathode: ClO2 + 4H +