ALTERNATIVE METHOD TO MEASURE PRESSURE USING OPTICAL FIBER

Luiz Henrique Paraguassú de Oliveira, Jackson S. Oliveira, Paulo Roberto Guimarães Couto, Arthur M. Braga

Abstract

A number of different measurement principles are used in pressure measuring instruments. Some principles use fundamental methods and others can use some property of the material, like a mechanical deformation of a sensing element to determine a quantity. Following this possibly of measuring pressure through a physical property, it was created a new kind of pressure sensor that uses guided light in an optical fiber as measurement principle. This new technology has been used in pressure sensors mainly for the petroleum industries by measuring the variations of the wavelength associated with pressure values. Compared with pressure sensors that use traditional technologies of measurement, optical sensors have shown a growing acceptance because they have a good behaviour in harsh and hostile work conditions. This paper describes a calibration system established to evaluate the metrological features of this pressure optical sensors showing up the calibrations results.

Keywords

pressure sensor, optical fiber, Bragg grating

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IMEKO-WC-2012-TC16-O13.pdf

DOI

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IMEKO TC

TC16 - Pressure and Vacuum Measurement

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