Vaporsense Contamination-Resistant High Temperature UV Hygrometer

M. E. Gersh; M. W. Matthew; M. D. Bangert; P. Shuck

doi:10.1117/12.947859

29 November 1988 Vaporsense Contamination-Resistant High Temperature UV Hygrometer

M. E. Gersh, M. W. Matthew, M. D. Bangert, P. Shuck

Proceedings Volume 0961, Industrial Optical Sensing; (1988) https://doi.org/10.1117/12.947859
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

Abstract

The use of reliable and accurate hygrometers to monitor and control the operation of drying hoods would result in significant energy savings and improvement in product quality. We have developed such a hygrometer, VaporSense, which operates at high temperature and humidity in environments containing high concentrations of particulates and corrosive vapors. VaporSense uses the differential absorption of light by water vapor wavelengths to determine absolute humidity. A UV fiber-optic prulit, is inserted into the contaminating environment. Optical surfaces are kept clean by a curtain of dry air. VaporSense prototypes have been installed in a variety of industrial drying sites. Stable, long term, contamination free operation was demonstrated.

Citation Download Citation

M. E. Gersh, M. W. Matthew, M. D. Bangert, and P. Shuck "Vaporsense Contamination-Resistant High Temperature UV Hygrometer", Proc. SPIE 0961, Industrial Optical Sensing, (29 November 1988); https://doi.org/10.1117/12.947859

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