Sensirion’s new SWT50i sensor helps to assess organic substances in water and supports the user in controlling water treatment processes or monitoring the water quality. The sensor acts as photometer, measuring the absorption in the UV-C range and allows the user to monitor typical organic contaminants and various pollutants such as benzene and antibiotics, pesticides, detergents, plastics, and solvents. The exceptionally small size of 70 x 70 x 70 cm and flow through-design enables easy integration into challenging designs while meeting the highest reliability demand and cost-efficiency. With this sensor Sensirion enters the stage of water quality measurement for the first time and offers a cost-efficient and easy-to-integrate solution that enables water quality measurement for a wide applicational range: in production processes, water purification in waterworks to distribution systems or in private households.
Conventionally, the measurement of water pollutants is done at only a few points by means of TOC (total organic carbon) analyzers. These laboratory instruments are expensive, complicated to use and do not allow real-time monitoring. Additionally, there is the UV absorption method, based on the UV light absorbing property of organic molecules. While online measuring devices exist, which so far, they have been designed exclusively as probes and are also quite expensive. The SWT50i uses the same UV absorption measuring principle but presents a completely new form factor with an attractive price. This allows measurement at several points in one system or in applications where it was previously not feasible in terms of price. In addition, Sensirion uses a flow-through sensor, which, unlike the available probes, can be easily inserted into closed hose systems with smaller hose diameters (5-15mm).