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Successful implementation of ultraviolet (UV) disinfection will in part be determined bythe performance and reliability of UV sensor systems used by commercial UVreactors. This work reports on the findings from a UV sensor performancestudy conducted at drinking water UV installations throughout NorthAmerica. This study was conducted as part of the AwwaRF Research Projectentitled "Design and Performance Guidelines for UV Sensor Systems." The study is benchmarking the state-of-the-art on UV sensor anddose monitoring technologies through literature reviews and vendor surveys,measuring the performance UV sensor systems at North American andEuropean UV installations, developing approaches for measuring UV sensor properties and characterizing those properties with various sensors beforeand after long term UV exposure, and analyzing issues with sensor propertiesusing CFD-based UV system performance models. Results will be used todevelop UV sensor guidelines with stakeholder input and developed a NISTcalibration service for the UV industry. This work reports on the findingsfrom the North American survey on UV sensor performance. Tests were conducted over the duration of the study and involved:Reference Sensor Checks - comparison of measurements made by dutyand reference sensors; UV Sensor Reading vs. Ballast Power Setting - duty UV sensormeasurements were made as a function of lamp ballast power setting;UV Sensor Variability - duty and reference sensor measurements using asingle sensor port were recorded at minimum and maximum ballastpower settings;Lamp and Sensor Port Variability - measurements using a singlereference sensor mounted in each sensor port were compared; and,UVT Monitor - measurements made by UVT monitors were compared tomeasurements made using a bench scale spectrophotometer. Includes tables, figures.

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Edition: Vol. - No. Published: 06/17/2005 Number of Pages: 26File Size: 1 file , 400 KB