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Proceedings Paper

Real-time optical fiber sensor for hydro-alcoholic solutions
Author(s): Eric Fujiwara; Rafael T. Takeishi; Eduardo Ono; J. S. dos Santos; Aya Hase; Carlos K. Suzuki
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Paper Abstract

The real-time determination of hydro-alcoholic concentration in alcohol distillation plants is a primordial condition in order to preserve the quality and reduce production losses. Presented research proposes a Fresnel reflectometric optical fiber sensor for the determination of hydro-alcoholic concentration in liquids. The intensity of reflected light and the sample temperature are continuously measured and processed by a fast algorithm. Calibration curves were prepared for a range from 0 to 100% of water in alcohol (ethanol) and adjusted to second order polynomials. According to functional tests, sensor provides maximal error of 1.3 % for concentration values and proportionates practically real-time analysis.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75037E (5 October 2009); doi: 10.1117/12.834250
Show Author Affiliations
Eric Fujiwara, The State Univ. of Campinas (Brazil)
Rafael T. Takeishi, The State Univ. of Campinas (Brazil)
Eduardo Ono, The State Univ. of Campinas (Brazil)
J. S. dos Santos, The State Univ. of Campinas (Brazil)
Aya Hase, The State Univ. of Campinas (Brazil)
Carlos K. Suzuki, The State Univ. of Campinas (Brazil)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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