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Title: Apparatus for accurately measuring high temperatures

Abstract

The present invention is a thermometer used for measuring furnace temperatures in the range of about 1800/sup 0/ to 2700/sup 0/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:
OSTI Identifier:
5444072
Application Number:
ON: DE84005998
Assignee:
EDB-84-031087
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; THERMOMETERS; DESIGN; BLACKBODY RADIATION; CLEANING; FURNACES; GASES; RADIOMETERS; VALVES; CONTROL EQUIPMENT; ELECTROMAGNETIC RADIATION; EQUIPMENT; FLOW REGULATORS; FLUIDS; MEASURING INSTRUMENTS; RADIATION DETECTORS; RADIATIONS; 440300* - Miscellaneous Instruments- (-1989)

Citation Formats

Smith, D D. Apparatus for accurately measuring high temperatures. United States: N. p., Web.
Smith, D D. Apparatus for accurately measuring high temperatures. United States.
Smith, D D. . "Apparatus for accurately measuring high temperatures". United States.
@article{osti_5444072,
title = {Apparatus for accurately measuring high temperatures},
author = {Smith, D D},
abstractNote = {The present invention is a thermometer used for measuring furnace temperatures in the range of about 1800/sup 0/ to 2700/sup 0/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 = {},
month = {}
}