Apparatus for accurately measuring high temperatures
Abstract
The present invention is a thermometer used for measuring furnace temperaes in the range of about 1800.degree. to 2700.degree. C. The thermometer comprises a broadband multicolor thermal radiation sensor positioned to be in optical alignment with the end of a blackbody sight tube extending into the furnace. A valve-shutter arrangement is positioned between the radiation sensor and the sight tube and a chamber for containing a charge of high pressure gas is positioned between the valve-shutter arrangement and the radiation sensor. A momentary opening of the valve shutter arrangement allows a pulse of the high gas to purge the sight tube of air-borne thermal radiation contaminants which permits the radiation sensor to accurately measure the thermal radiation emanating from the end of the sight tube.
- Inventors:
-
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 865490
- Patent Number(s):
- 4525080
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; accurately; measuring; temperatures; thermometer; furnace; temperaes; range; 1800; degree; 2700; comprises; broadband; multicolor; thermal; radiation; sensor; positioned; optical; alignment; blackbody; sight; tube; extending; valve-shutter; arrangement; chamber; containing; charge; pressure; gas; momentary; valve; shutter; allows; pulse; purge; air-borne; contaminants; permits; measure; emanating; radiation sensor; optical alignment; thermal radiation; pressure gas; accurately measuring; radiation emanating; tube extending; sensor positioned; accurately measure; shutter arrangement; /374/
Citation Formats
Smith, Douglas D. Apparatus for accurately measuring high temperatures. United States: N. p., 1985.
Web.
Smith, Douglas D. Apparatus for accurately measuring high temperatures. United States.
Smith, Douglas D. Tue .
"Apparatus for accurately measuring high temperatures". United States. https://www.osti.gov/servlets/purl/865490.
@article{osti_865490,
title = {Apparatus for accurately measuring high temperatures},
author = {Smith, Douglas D},
abstractNote = {The present invention is a thermometer used for measuring furnace temperaes in the range of about 1800.degree. to 2700.degree. C. The thermometer comprises a broadband multicolor thermal radiation sensor positioned to be in optical alignment with the end of a blackbody sight tube extending into the furnace. A valve-shutter arrangement is positioned between the radiation sensor and the sight tube and a chamber for containing a charge of high pressure gas is positioned between the valve-shutter arrangement and the radiation sensor. A momentary opening of the valve shutter arrangement allows a pulse of the high gas to purge the sight tube of air-borne thermal radiation contaminants which permits the radiation sensor to accurately measure the thermal radiation emanating from the end of the sight tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}