Online Chlorine Dioxide & Chlorine Analyzer W501 with AS3 Sensor for Hot Water upto 70℃ The Online Chlorine Dioxide & Chlorine Analyzer is equipped with German-made high-performance amperometric sensor AS3 for precise free chlorine/chlorine dioxide monitoring in drinking/hot water (up to 70°C). Operating via a potentiostatic three-electrode system, it delivers accurate, stable signals to support long-term disinfection control and water safety. It integrates seamlessly with control systems, offering analog (voltage/4-20 mA), digitally processed analog, and digital Modbus RTU outputs. Equipped with integrated automatic temperature compensation (0-70°C), the W501-DAS3 combines rugged design, advanced electrochemistry, and low-maintenance features. It’s a cost-effective solution for reliable disinfectant monitoring in challenging water treatment processes with high temperatures or aggressive conditions. Disinfection control in drinking water treatment plants (municipal and industrial). Monitoring of process water in applications requiring hot water (up to 70°C), such as in the food and beverage industry. Cooling water systems. Any application using chlorine dioxide as a disinfectant. Technical Parameters Parameter Free Chlorine (AS3-CL), Chlorine Dioxide (AS3-CD) Application Medium Drinking Water (cold and hot, up to 70°C)

Housing Material Measuring Ranges (examples) CL (High): 0.005...2.000 ppm (without RV1) / 0.005...0.700 ppm (with RV1) CL (Normal): 0.03...20.00 ppm (without RV1) / 0.03...7.00 ppm (with RV1) Output Signals Analog: 0...±2 V, 4...20 mA; Digital: Modbus RTU Power Supply Typically 9...30 VDC or 10...30 VDC, depending on version 0.5 bar (standard) / 8 bar (with retaining ring in TARAflow FLC flow chamber) Operating Temperature