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
The Model 498CL-01 sensor is intended for the continuous determination of free chlorine (hypochlorous acid plus hypochlorite ion) in water. The primary application is measuring chlorine in drinking water.
The 498CL-01 is a three electrode, membrane-covered amperometric sensor. Unlike amperometric free chlorine sensors from other manufacturers, the 498CL-01 requires neither sample pretreatment nor a pH correction. Instead, an acidic internal solution lowers the pH of the sample as it diffuses into the sensor, converting hypochlorite into hypochlorous acid, the form of free chlorine amperometric sensors can measure. Between pH 6.5 and 10 the chlorine reading decreases less than 4% per unit increase in pH. Below pH 6.5 the change is less than 1%.
The linear range of the sensor is 0 to 20 ppm.
- 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
The Model 498CL-01 sensor is intended for the continuous determination of free chlorine (hypochlorous acid plus hypochlorite ion) in water. The primary application is measuring chlorine in drinking water.
The 498CL-01 is a three electrode, membrane-covered amperometric sensor. Unlike amperometric free chlorine sensors from other manufacturers, the 498CL-01 requires neither sample pretreatment nor a pH correction. Instead, an acidic internal solution lowers the pH of the sample as it diffuses into the sensor, converting hypochlorite into hypochlorous acid, the form of free chlorine amperometric sensors can measure. Between pH 6.5 and 10 the chlorine reading decreases less than 4% per unit increase in pH. Below pH 6.5 the change is less than 1%.
The linear range of the sensor is 0 to 20 ppm.
