Multichannel fiber optic temperature monitor

Larry A. Jeffers

doi:10.1117/12.166878

7 February 1994 Multichannel fiber optic temperature monitor

Larry A. Jeffers

Proceedings Volume 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation; (1994) https://doi.org/10.1117/12.166878
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

We have developed a multichannel fiber-optic based radiation pyrometer for monitoring the temperature distribution across a moving web up to 4 meters wide. The system employs an array of up to 160 pick-ups whose outputs are delivered by optical fibers to the monitor where they are optically multiplexed onto a 16-channel germanium photodiode array. The pick-ups are deployed linearly across the web on 2.5 cm centers. A 32-channel prototype system achieved a noise limited precision of +/- 1 degree(s)C over the range 140 degree(s)C to 200 degree(s)C. The noise increased to +/- 5 degree(s)C at 100 degree(s)C.

Citation Download Citation

Larry A. Jeffers "Multichannel fiber optic temperature monitor", Proc. SPIE 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation, (7 February 1994); https://doi.org/10.1117/12.166878

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