Temperature Measurements Using a High-Temperature Blackbody Optical Fiber Thermometer-Reference-Cited by-同舟云学术

Temperature Measurements Using a High-Temperature Blackbody Optical Fiber Thermometer

Published:2003-05-20 Issue:3 Volume:125 Page:471-477
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Barker David G.¹,Jones Matthew R.¹

Affiliation:

1. Department of Mechanical Engineering, Brigham Young University, 435 CTB, PO Box 24201, Provo, UT 84602-4201

Abstract

A blackbody optical fiber thermometer consists of an optical fiber whose sensing tip is given a metallic coating. The sensing tip of the fiber forms an isothermal cavity and the emission from this cavity is approximately equal to the emission from a blackbody. When a short length of the fiber is exposed to a high temperature environment, the temperature at the sensing tip can be inferred using the standard two-color approach. If, however, more than a short length of the fiber is exposed to elevated temperatures, emission by the fiber will result in erroneous temperature measurements. This paper presents experimental results that show it is possible to use additional spectral measurements to eliminate errors due to emission by the fiber and measure the tip temperature. In addition, the technique described in this paper can be used to obtain an estimate of the temperature profile along the fiber.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/125/3/471/5505538/471_1.pdf

Reference19 articles.

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