Sensor for the measurement of chlorine dioxide. Membrane-covered, amperometric, 2-electrode measuring system.

• Measured variable: Chlorine dioxide
• Calibration: at the controller, via analytical chlorine dioxide determination by DPD 1 method
• Interferences: Cl₂ does not interfere, O₃ is measured at a factor of 25 compared with ClO₂
• pH range: 2-11
• Pressure range: 0‒1 bar, no pressure surges and/or fluctuations
• Temperature range: 0–50 °C (no ice crystals in the sample water)
• Integrated automatic temperature compensation
• Response time: T90 approx. 60 s
• Flow rate: approx. 30 l/h, low flow dependence
• Shaft length: standard 175 mm (mA version up to 220 mm)
• Connection: standard 4-pin plug; mA version 2-pole terminal, M12 socket or modbus RTU with M12 socket
• Material: PVC-U, semi-permeable membrane