Rosemount 498CL

The 498CL pH-Independent Free Chlorine Sensor is intended for the continuous determination of free chlorine in water. 

The primary application is measuring chlorine in drinking water.


  • Measure free chlorine without sample treatment and without an auxiliary pH sensor
  • Sensor response is practically independent of pH between pH 6.5 and 10
  • Automatic correction for changes in membrane permeability caused by temperature
  • Easily replaced membrane; no special tools required
  • Variopol connector option allows the sensor to be replaced without running new cable
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