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Proceedings Paper

Simultaneous measurement of liquid level and specific gravity based on fiber Bragg grating sensors
Author(s): Chih-Wei Lai; Yu-Lung Lo; Wen-Feng Liu; Jiahn-Piring Yur
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Paper Abstract

In this paper we presented the simultaneous measurement of liquid level and specific gravity with two fiber Bragg grating (FBG) sensors and utilized the relationship between liquid level and pressure sensors. One FBG was fixed on the surface of a cantilever beam as a liquid level sensor and another FBG was embedded in a polymer-half-filled metal cylinder as a pressure sensor. The two sensors exhibited an approximately linear response and can be applied to measure the unknown liquid level and specific gravity of liquid. This system can be applied for the oil tanks and batteries monitoring.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033T (5 October 2009); doi: 10.1117/12.833683
Show Author Affiliations
Chih-Wei Lai, National Cheng Kung Univ. (Taiwan)
Yu-Lung Lo, National Cheng Kung Univ. (Taiwan)
Feng Chia Univ. (Taiwan)
Wen-Feng Liu, Feng Chia Univ. (Taiwan)
Jiahn-Piring Yur, Kun Shan Univ. (Taiwan)


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

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