Gap-free disinfection measurement

Photo courtesy Endress+Hauser.

Endress+Hauser, based in Burlington, Ont., has launched a line of digital sensors with Memosens 2.0 technology to deliver continuous water disinfection measurement for water and wastewater treatment plants, food and pharmaceutical production facilities and recreational swimming pools, among others.

The sensors have been optimized to upgrade a wide range of water-monitoring applications, to help ensure proper dosing of chlorine in drinking, swimming and discharge water and confirm its absence in food and beverages (and the absence of chlorine dioxide following cleaning-in-place cycles. They can be calibrated in the lab and then installed directly in the field with a plug-in connection.

Once installed, the sensors start to measure immediately when chlorine is present, remain ‘alert’ and are not deactivated even when there is no chlorine, so as to ensure there are no gaps in monitoring and no surges are missed.

“This enables our partners and customers to react immediately to process changes and improve dosing of the disinfectant, thereby saving costs,” explains Johannes Kienle, liquid analysis product manager at Endress+Hauser. “Other chlorine sensors tend to fall asleep, so to speak.”

There are five new sensors, for chlorine dioxide (model CCS50E), free chlorine (CCS51E), total chlorine (CCS53E), free bromine (CCS55E) and ozone (CCS58E). Rather than rely on colorimetric measuring methods that use costly reagents, they implement the amperometric measuring principle. Measured values are converted into digital signals and transmitted inductively, regardless of moisture or other environmental influences.