Chlorine sensor with membrane-covered, amperometric 3-electrode system. For the measurement of free inorganic chlorine with reduced pH-dependence. 

  • Measured variable(s): NaClO (sodium hypochlorite), Ca(ClO)₂ (calcium hypochlorite), Cl₂ (chlorine gas), electrolytically generated chlorine
  • Calibration: at the controller, via analytical chlorine determination by DPD 1 method
  • Interferences: 75 % of the ClO₂ concentration, 80 % of the O₃ concentration, combined chlorine may increase the reading
  • pH range: 4‒9
  • Pressure range: 0–3.0 bar, no pressure surges and/or fluctuations
  • Temperature range: 0‒45 °C
  • Integrated automatic temperature compensation
  • Response time: T90 approx. 2 min
  • 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, PEEK, stainless steel 1.4571, microporous hydrophilic membrane
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