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Model 499ACL Chlorine Sensor
Emerson Process Management, Rosemount Analytical
•Datasheet: Model 499ACL Chlorine Sensor
•Application Note: Chlorine Measurement By Amperometric Sensor
MODEL 499ACL-01 FREE RESIDUAL CHLORINE SENSOR
The 499ACL-01 is intended for the continuous determination of free chlorine (hypochlorous acid plus hypochlorite ion) in water. The primary application is measuring chlorine levels in drinking water. It can also be used to monitor dechlorination processes. The sensor requires no acid pretreatment and can measure free chlorine in samples having pH as high as 9.5. The linear range of the sensor is 0 to 10 ppm. For determination of higher levels of chlorine, consult the factory.
The 499ACL-01 is a membrane-covered amperometric sensor, consisting of a proprietary porous membrane stretched tightly over a platinum cathode. A silver anode and an electrolyte solution complete the internal circuit. During operation, free chlorine diffuses from the sample through the membrane. A polarizing voltage applied to the cathode completely reduces free chlorine to chloride ion. The reduction produces a current between the cathode and the anode, which the analyzer measures. The current is directly proportional to the rate at which free chlorine diffuses through the membrane, which is ultimately proportional to the concentration of free chlorine in the sample.
- FAMILY OF SENSORS FOR MEASURING FREE CHLORINE, TOTAL CHLORINE, AND MONOCHLORAMINE
- EASILY REPLACEABLE MEMBRANE, no special tools required
- AUTOMATIC PRESSURE EQUALIZATION to maintain correct membrane tension
- VARIOPOL CONNECTOR OPTION allows the sensor to be replaced without running new cable
•Datasheet: Model 499ACL Chlorine Sensor
•Application Note: Chlorine Measurement By Amperometric Sensor
