Monitoring of inhomogeneous flow distributions using fibre-optic Bragg grating temperature sensor arrays

Ines Latka; Thomas Bosselmann; Wolfgang Ecke; Michael Willsch

doi:10.1117/12.668899

22 April 2006 Monitoring of inhomogeneous flow distributions using fibre-optic Bragg grating temperature sensor arrays

Ines Latka, Thomas Bosselmann, Wolfgang Ecke, Michael Willsch

Proceedings Volume 6189, Optical Sensing II; 61892G (2006) https://doi.org/10.1117/12.668899
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

Knowledge of the gas flow distributions, their mass velocity and turbulences, in chemical reactors, thermodynamic engines, pipes, and other industrial facilities may help to achieve a more efficient system performance. In our novel approach, optical fibre Bragg grating (FBG) sensors have been used for measuring the temperature of a heated element, adapting the principles of conventional hot-wire-anemometers. Because of the multiplexing capability of FBG sensors, the gas mass flow distribution can be measured along the sensor array. The length of the heated and sensor-equipped element can be easily adapted to the cross section of the gas flow, from <10 cm up to several metres. The number and distances of FBGs distributed over this length defines the spatial resolution and is basically limited by the sensor signal processing. According to FBG sensor lengths < 5 mm, spatial resolutions of gas flow measurements of less than 1 cm can be achieved.

Citation Download Citation

Ines Latka, Thomas Bosselmann, Wolfgang Ecke, and Michael Willsch "Monitoring of inhomogeneous flow distributions using fibre-optic Bragg grating temperature sensor arrays", Proc. SPIE 6189, Optical Sensing II, 61892G (22 April 2006); https://doi.org/10.1117/12.668899

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