The UVT-LED transmittance monitor from Sensorex Corp. takes automatic measurements every 60 seconds to ensure proper UV dosing and efficient operation. Integrated wiping prevents fouling and buildup. Available as a hand-held portable meter or in-line process, a self-calibration check ensures continual accuracy. The hand-held model comes with battery power for use in the field or lab. The continuous in-line model runs on 24 VDC power and can be used in an open channel configuration or pressurized pipe. 714/895-4344; www.sensorex.com.