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Title: Emissivity independent optical pyrometer

Abstract

Disclosed herein are representative embodiments of methods, apparatus, and systems for determining the temperature of an object using an optical pyrometer. Certain embodiments of the disclosed technology allow for making optical temperature measurements that are independent of the surface emissivity of the object being sensed. In one of the exemplary embodiments disclosed herein, a plurality of spectral radiance measurements at a plurality of wavelengths is received from a surface of an object being measured. The plurality of the spectral radiance measurements is fit to a scaled version of a black body curve, the fitting comprising determining a temperature of the scaled version of the black body curve. The temperature is then output. The present disclosure is not to be construed as limiting and is instead directed toward all novel and nonobvious features and aspects of the various disclosed embodiments, alone or in various combinations and subcombinations with one another.

Inventors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1349724
Patent Number(s):
9,612,160
Application Number:
14/072,380
Assignee:
UT-Battelle, LLC ORNL
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Nov 05
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE

Citation Formats

Earl, Dennis Duncan, and Kisner, Roger A. Emissivity independent optical pyrometer. United States: N. p., 2017. Web.
Earl, Dennis Duncan, & Kisner, Roger A. Emissivity independent optical pyrometer. United States.
Earl, Dennis Duncan, and Kisner, Roger A. Tue . "Emissivity independent optical pyrometer". United States. https://www.osti.gov/servlets/purl/1349724.
@article{osti_1349724,
title = {Emissivity independent optical pyrometer},
author = {Earl, Dennis Duncan and Kisner, Roger A.},
abstractNote = {Disclosed herein are representative embodiments of methods, apparatus, and systems for determining the temperature of an object using an optical pyrometer. Certain embodiments of the disclosed technology allow for making optical temperature measurements that are independent of the surface emissivity of the object being sensed. In one of the exemplary embodiments disclosed herein, a plurality of spectral radiance measurements at a plurality of wavelengths is received from a surface of an object being measured. The plurality of the spectral radiance measurements is fit to a scaled version of a black body curve, the fitting comprising determining a temperature of the scaled version of the black body curve. The temperature is then output. The present disclosure is not to be construed as limiting and is instead directed toward all novel and nonobvious features and aspects of the various disclosed embodiments, alone or in various combinations and subcombinations with one another.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {4}
}

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Works referenced in this record:

Strategy and enhanced temperature determination in a laser heated diamond anvil cell
journal, May 2009

  • Deemyad, Shanti; Papathanassiou, Anthony N.; Silvera, Isaac F.
  • Journal of Applied Physics, Vol. 105, Issue 9, Article No. 093543
  • DOI: 10.1063/1.3117517

Automatic compensation of emissivity in three-wavelength pyrometers
journal, July 2007