Hypochlorite Monitoring Systems Installed by Dwr Cymru

With higher summer temperatures hitting the UK, the risk of sodium hypochlorite breakdown – and subsequent chlorate formation – increases. To address this, Dŵr Cymru (Welsh Water) installed systems across multiple sites to continuously monitor hypochlorite concentration within storage facilities.

Pi recently visited one of the Dwr Cymru sites to deliver free, on-site training for operators on the maintenance and calibration of the HypoSense sodium hypochlorite sensor. This ensures accurate and reliable operation.

The HypoSense has been developed for robust, long-term performance in industrial bleach applications. Using optical measurement technology, it eliminates the need for reagents or consumables, helping to reduce both operating costs and maintenance requirements. An internal thermistor automatically compensates for temperature fluctuations, ensuring consistent accuracy even in warm conditions when chlorate formation is most likely. The sensor’s low-maintenance, no-moving-parts design means it performs reliably in harsh chemical environments, while its proven longevity (up to 15 years sensor life) minimises whole-life costs.

By combining continuous monitoring with robust sensor technology, Dwr Cymru is able to detect changes in sodium hypochlorite condition before they become an issue. This proactive approach supports compliance with water quality standards and helps protect both assets and customers from the effects of chlorate formation.

If you would like more information about the HypoSense or any other products from Pi, please contact our team.