Monitoring UV light transmittance (UV-T) is important to control of disinfection in drinking water systems. A new offering from Aquionics is designed to provide highly stable UV-T readings under all water conditions over an extended lifetime.The company says its PearlSense T254 unit is the first UV-T monitor to incorporate a UV-C LED light-source in place of a conventional mercury lamp. Use of a single lamp and sensor in place of multiple lamps and sensors adds consistency to readings.The unit can be installed directly into a pipe (as in most drinking water plants) or in open channels. It can also be
