29 November 2011 Temperature compensated liquid level sensor using FBGs and a Bourdon tube
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Proceedings Volume 8311, Optical Sensors and Biophotonics III; 83110R (2011) https://doi.org/10.1117/12.905702
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. Sengupta, D. Sengupta, M. Sai Shankar, M. Sai Shankar, P. Vengal Rao, P. Vengal Rao, P. Saidi Reddy, P. Saidi Reddy, R. L. N. Sai Prasad, R. L. N. Sai Prasad, P. Kishore, P. Kishore, K. Srimannarayana, K. Srimannarayana, } "Temperature compensated liquid level sensor using FBGs and a Bourdon tube", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110R (29 November 2011); doi: 10.1117/12.905702; https://doi.org/10.1117/12.905702
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