Fiber optic fugitive emission dosimeter

John Peck; Mark L. Wilson; Michael L. Rhodes

doi:10.1117/12.260587

10 December 1996 Fiber optic fugitive emission dosimeter

John Peck, Mark L. Wilson, Michael L. Rhodes

Proceedings Volume 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII; (1996) https://doi.org/10.1117/12.260587
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Federal regulations require companies to monitor leaks from valves, flanges, and pipes (fugitive emissions) in industrial plants on a regular basis. Honeywell has been conducting research into the use of fiber optic sensors for this purpose. The result ia a low-cost chemical dosimeter that is able to detect a variety of fugitive emissions, including various volatile organic compounds (VOCs) down to a few hundred parts per million (ppm). This sensor uses a fluorescent dye that exhibits spectral shifts when its chemical environment is changed. Greater stability is achieved because a spectral change is monitored and the sensor is not dependent on a single relative intensity measurement. Dyes are integrated into an optically clear polymer and immobilized on the tip of an optical fiber. When an analyte permeates into the polymer, a chemical interaction takes place that changes the dye's environment and therefore its spectral fluorescence. With most chemicals of interest, this is a reversible effect. Using a 'smart signal processor' (SSP), a real-time analysis can be made at a distant location. This paper discusses the details and results of a fiber optic sensor incorporating these concepts.

Citation Download Citation

John Peck, Mark L. Wilson, and Michael L. Rhodes "Fiber optic fugitive emission dosimeter", Proc. SPIE 2836, Chemical, Biochemical, and Environmental Fiber Sensors VIII, (10 December 1996); https://doi.org/10.1117/12.260587

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