This sensor is made for the measurement of free chlorine, chlorine dioxide and dissolved ozone in water.
It is suggested to place the sensor in a measurement cell SZ 72×1 or SZ 72×3 provided with overflow in order to maintain the sample flow constant.
If placed in the SZ 7251 cell or in a pipe-line, in order to avoid an instable measurement, it is necessary for the flow to be constant.
