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Proceedings Paper

Quasi-distributed liquid level measurement with adaptable optical fiber transducers
Author(s): M. Lomer; A. Quintela; M. A. Quintela; A. Cobo; J. M. López-Higuera
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Paper Abstract

A level and flexible quasi-distributed liquid sensor based on the changes in the light transmittance in a plastic optical fiber cable is proposed. The measurement points are constituted by small areas created by side-polishing on a curved fiber and the removal of a portion of the core. These points are distributed and adapted on each full-turn of a spire of fiber built on a cylindrical tube vertically positioned in a tank. The changes between the refractive indexes of air and liquid generate a signal power proportional to the position and level of the liquid. The sensor system was successfully demonstrated in the laboratory and experimental results of three prototypes with 10, 8, and 5 measurement points and with bend radius of 5mm are presented in this paper.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 661917 (2 July 2007); doi: 10.1117/12.738385
Show Author Affiliations
M. Lomer, Univ. of Cantabria (Spain)
A. Quintela, Univ. of Cantabria (Spain)
M. A. Quintela, Univ. of Cantabria (Spain)
A. Cobo, Univ. of Cantabria (Spain)
J. M. López-Higuera, Univ. of Cantabria (Spain)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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