Multipoint high temperature sensing with regenerated fiber Bragg gratings

Franz J. Dutz; Markus Lindner; Andreas Heinrich; Carl G. Seydel; Thomas Bosselmann; Alexander W. Koch; Johannes Roths

doi:10.1117/12.2305300

14 May 2018 Multipoint high temperature sensing with regenerated fiber Bragg gratings

Franz J. Dutz, Markus Lindner, Andreas Heinrich, Carl G. Seydel, Thomas Bosselmann, Alexander W. Koch, Johannes Roths

Author Affiliations +

Proceedings Volume 10654, Fiber Optic Sensors and Applications XV; 1065407 (2018) https://doi.org/10.1117/12.2305300
Event: SPIE Commercial + Scientific Sensing and Imaging, 2018, Orlando, FL, United States

Abstract

Two application examples of RFBG sensor arrays that are intended for high temperature profile measurements in chemical reaction vessels and in a gas turbine exhaust duct are described. The array for the chemical reaction vessel includes four sub-arrays with six measurement points each, distributed over a length of 2.3 m. By employing a largescale test facility, temperature profiles extending over 2.3 m with temperatures in the range of 200 °C to 500 °C were acquired with this RFBG array and an excellent agreement with thermocouple data was demonstrated. The second application reported is the measurement of the radial temperature distribution within the exhaust duct of a 7 MW gas turbine. Therefore, a three-point RFBG array was mounted radially in the exhaust gas stream and significant changes in the measured temperature gradient were observed when the engine was in idle or in full load operation mode. In addition to these field deployments of RFBG sensors, long-term annealing experiments at 450 °C in the research lab showed only a shift of the nonlinear temperature calibration curve without changing its shape, allowing recalibrations of RFBG sensor arrays at single temperature points. These examples demonstrate the suitability of RFBG based multipoint high temperature sensing for industrial applications.

Citation Download Citation

Franz J. Dutz, Markus Lindner, Andreas Heinrich, Carl G. Seydel, Thomas Bosselmann, Alexander W. Koch, and Johannes Roths "Multipoint high temperature sensing with regenerated fiber Bragg gratings", Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 1065407 (14 May 2018); https://doi.org/10.1117/12.2305300

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE