Real-time optical fiber sensor for hydro-alcoholic solutions

Eric Fujiwara; Rafael T. Takeishi; Eduardo Ono; J. S. dos Santos; Aya Hase; Carlos K. Suzuki

doi:10.1117/12.834250

5 October 2009 Real-time optical fiber sensor for hydro-alcoholic solutions

Eric Fujiwara, Rafael T. Takeishi, Eduardo Ono, J. S. dos Santos, Aya Hase, Carlos K. Suzuki

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75037E (2009) https://doi.org/10.1117/12.834250
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

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.

Citation Download Citation

Eric Fujiwara, Rafael T. Takeishi, Eduardo Ono, J. S. dos Santos, Aya Hase, and Carlos K. Suzuki "Real-time optical fiber sensor for hydro-alcoholic solutions", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75037E (5 October 2009); https://doi.org/10.1117/12.834250

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