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Fiber Bragg Grating Sensors for Real Time Monitoring of Evacuation Process

Prasad, Guru AS and Hegde, Gopalkrishna M and Asokan, S (2010) Fiber Bragg Grating Sensors for Real Time Monitoring of Evacuation Process. In: 4th International Conference on Advances in Experimental Mechanics, NOV 18-20, 2009, Singapore.

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Fiber bragg grating (FBG) sensors have been widely used for number of sensing applications like temperature, pressure, acousto-ultrasonic, static and dynamic strain, refractive index change measurements and so on. Present work demonstrates the use of FBG sensors in in-situ measurement of vacuum process with simultaneous leak detection capability. Experiments were conducted in a bell jar vacuum chamber facilitated with conventional Pirani gauge for vacuum measurement. Three different experiments have been conducted to validate the performance of FBG sensor in monitoring vacuum creating process and air bleeding. The preliminary results of FBG sensors in vacuum monitoring have been compared with that of commercial Pirani gauge sensor. This novel technique offers a simple alternative to conventional method for real time monitoring of evacuation process. Proposed FBG based vacuum sensor has potential applications in vacuum systems involving hazardous environment such as chemical and gas plants, automobile industries, aeronautical establishments and leak monitoring in process industries, where the electrical or MEMS based sensors are prone to explosion and corrosion.

Item Type: Conference Paper
Series.: Proceedings of SPIE-The International Society for Optical Engineering
Publisher: The International Society for Optical Engineering
Additional Information: Copyright of this article belongs to The International Society for Optical Engineering.
Keywords: Fiber bragg grating sensor; vacuum sensing; real time pressure monitoring
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 14 Mar 2011 07:09
Last Modified: 14 Mar 2011 07:09
URI: http://eprints.iisc.ac.in/id/eprint/36053

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