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Liquid level measurement using Bragg grating sensor

D. SENGUPTA1,* , M. SAI SHANKAR1, P. SAIDI REDDY1, R. L. N SAI PRASAD1, K. SRIMANNARAYANA1

Affiliation

  1. Department of Physics, National Institute of Technology, Waranagal - 506 004, India

Abstract

The paper presents, the measurement of liquid level based on Fiber Bragg Grating sensor embedded on a thin cantilever. The level sensor is based on sensing the strain developed in the FBG using a thin cantilever. The strain response of FBG has been carried out and the results show a very good repeatability and linearity during rise and fall of liquid level. The sensitivity is approximately 0.073 nm/cm. The prototype of the level sensor can measure 14 cm of liquid level..

Keywords

Liquid level sensor, Cantilever, Float, Fiber Bragg grating.

Citation

D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, Liquid level measurement using Bragg grating sensor, Optoelectronics and Advanced Materials - Rapid Communications, 5, 7, July 2011, pp.742-744 (2011).

Submitted at: June 16, 2011

Accepted at: July 25, 2011