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Proceedings Paper

BPDI-based optical sensor for real-time high-temperature measurements for coal gasification process
Author(s): Yibing Zhang; Gary R. Pickrell; Bing Qi; Russell G. May; Anbo Wang
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Paper Abstract

Direct measurement of temperature in coal gasifiers requires a sensor technology that can withstand the extremely harsh environment posed by the high temperatures and corrosive agents present in these systems. An optical ultrahigh temperature measurement system is developed to address this critical need. This sensor is based on the broadband polarimetric differential interferometry (BPDI) sensing technology, in which optical spectrum is measured instead of direct detection of optical intensity. Resolution better than 0.1oC and high precision are achieved over a wide dynamic measurement range from room temperature up to 1600oC. This optical thermometer is immune to optical source power fluctuations and fiber losses. The other advantages of this thermometer are its simplicity, low-cost and long-term stability in harsh environments.

Paper Details

Date Published: 9 September 2002
PDF: 7 pages
Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.481958
Show Author Affiliations
Yibing Zhang, Virginia Polytechnic Institute and State Univ. (United States)
Gary R. Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Bing Qi, Virginia Polytechnic Institute and State Univ. (United States)
Russell G. May, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 4920:
Advanced Sensor Systems and Applications
Yun-Jiang Rao; Julian D. C. Jones; Hiroshi Naruse; Robert I. Chen, Editor(s)

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