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Proceedings Paper

Temperature compensated liquid level sensor using FBGs and a Bourdon tube
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Paper Abstract

A temperature compensated liquid level sensor using FBGs and a bourdon tube that works on hydrostatic pressure is presented. An FBG (FBG1) is fixed between free end and a fixed end of the bourdon tube. When hydrostatic pressure applied to the bourdon tube FBG1 experience an axial strain due to the movement of free end. Experimental result shows, a good linearity in shift in Bragg wavelength with the applied pressure. The performance of this arrangement is tested for 21metre water column pressure. Another FBG (FBG2) is included for temperature compensation. The design of the sensor head is simple and easy mountable external to any tank for liquid level measurements.

Paper Details

Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110R (29 November 2011); doi: 10.1117/12.905702
Show Author Affiliations
D. Sengupta, National Institute of Technology, Warangal (India)
M. Sai Shankar, National Institute of Technology, Warangal (India)
P. Vengal Rao, National Institute of Technology, Warangal (India)
P. Saidi Reddy, National Institute of Technology, Warangal (India)
R. L. N. Sai Prasad, National Institute of Technology, Warangal (India)
P. Kishore, National Institute of Technology, Warangal (India)
K. Srimannarayana, National Institute of Technology, Warangal (India)


Published in SPIE Proceedings Vol. 8311:
Optical Sensors and Biophotonics III
Jürgen Popp, Editor(s)

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