Self-calibrated active pyrometer for furnace temperature measurements

Woskov, Paul P; Cohn, Daniel R; Titus, Charles H; Surma, Jeffrey E

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Title: Self-calibrated active pyrometer for furnace temperature measurements

Abstract

Pyrometer with a probe beam superimposed on its field-of-view for furnace temperature measurements. The pyrometer includes a heterodyne millimeter/sub-millimeter-wave or microwave receiver including a millimeter/sub-millimeter-wave or microwave source for probing. The receiver is adapted to receive radiation from a surface whose temperature is to be measured. The radiation includes a surface emission portion and a surface reflection portion which includes the probe beam energy reflected from the surface. The surface emission portion is related to the surface temperature and the surface reflection portion is related to the emissivity of the surface. The simultaneous measurement of surface emissivity serves as a real time calibration of the temperature measurement. In an alternative embodiment, a translatable base plate and a visible laser beam allow slow mapping out of interference patterns and obtaining peak values therefor. The invention also includes a waveguide having a replaceable end portion, an insulating refractory sleeve and/or a source of inert gas flow. The pyrometer may be used in conjunction with a waveguide to form a system for temperature measurements in a furnace. The system may employ a chopper or alternatively, be constructed without a chopper. The system may also include an auxiliary reflector for surface emissivity measurements.

Inventors:

Woskov, Paul P ^[1]; Cohn, Daniel R ^[2]; Titus, Charles H ^[3]; Surma, Jeffrey E ^[4]

Bedford, MA
Chestnuthill, MA
Newtown Square, PA
Kennewick, WA

Issue Date:: Thu Jan 01 00:00:00 EST 1998

Research Org.:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

OSTI Identifier:: 871735

Patent Number(s):: 5785426

Assignee:: Massachusetts Institute of Technology (Cambridge, MA); Battelle Memorial Institute (Richland, WA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE

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G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
G01K11/006 - {using measurement of the effect of a material on microwaves or longer electromagnetic waves, e.g. measuring temperature via microwaves emitted by the object
G01K11/12 - using change of colour or translucency
G01K17/003 - {for measuring the power of light beams, e.g. laser beams}

Show less

DOE Contract Number:: AC06-76RL01830

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: self-calibrated; active; pyrometer; furnace; temperature; measurements; probe; beam; superimposed; field-of-view; heterodyne; millimeter; sub-millimeter-wave; microwave; receiver; including; source; probing; adapted; receive; radiation; surface; measured; emission; portion; reflection; energy; reflected; related; emissivity; simultaneous; measurement; serves; time; calibration; alternative; embodiment; translatable; base; plate; visible; laser; allow; slow; mapping; interference; patterns; obtaining; peak; values; waveguide; replaceable; insulating; refractory; sleeve; inert; gas; flow; conjunction; form; employ; chopper; alternatively; constructed; auxiliary; reflector; simultaneous measurement; insulating refractory; microwave source; furnace temperature; receive radiation; surface emissivity; visible laser; interference pattern; base plate; probe beam; temperature measurements; gas flow; laser beam; inert gas; beam energy; alternative embodiment; peak value; energy reflected; surface temperature; temperature measurement; interference patterns; heterodyne millimeter; temperature measure; beam superimposed; /374/

Citation Formats


                    Woskov, Paul P, Cohn, Daniel R, Titus, Charles H, and Surma, Jeffrey E. Self-calibrated active pyrometer for furnace temperature measurements.  United States: N. p., 1998. 
        Web.

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                    Woskov, Paul P, Cohn, Daniel R, Titus, Charles H, & Surma, Jeffrey E. Self-calibrated active pyrometer for furnace temperature measurements.  United States.

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                    Woskov, Paul P, Cohn, Daniel R, Titus, Charles H, and Surma, Jeffrey E. Thu .  
        "Self-calibrated active pyrometer for furnace temperature measurements".  United States.  https://www.osti.gov/servlets/purl/871735.

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@article{osti_871735,

  title        = {Self-calibrated active pyrometer for furnace temperature measurements},

  author       = {Woskov, Paul P and Cohn, Daniel R and Titus, Charles H and Surma, Jeffrey E},

  abstractNote = {Pyrometer with a probe beam superimposed on its field-of-view for furnace temperature measurements. The pyrometer includes a heterodyne millimeter/sub-millimeter-wave or microwave receiver including a millimeter/sub-millimeter-wave or microwave source for probing. The receiver is adapted to receive radiation from a surface whose temperature is to be measured. The radiation includes a surface emission portion and a surface reflection portion which includes the probe beam energy reflected from the surface. The surface emission portion is related to the surface temperature and the surface reflection portion is related to the emissivity of the surface. The simultaneous measurement of surface emissivity serves as a real time calibration of the temperature measurement. In an alternative embodiment, a translatable base plate and a visible laser beam allow slow mapping out of interference patterns and obtaining peak values therefor. The invention also includes a waveguide having a replaceable end portion, an insulating refractory sleeve and/or a source of inert gas flow. The pyrometer may be used in conjunction with a waveguide to form a system for temperature measurements in a furnace. The system may employ a chopper or alternatively, be constructed without a chopper. The system may also include an auxiliary reflector for surface emissivity measurements.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jan 01 00:00:00 EST 1998},

  month        = {Thu Jan 01 00:00:00 EST 1998}

}

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Works referenced in this record:

The Optical Properties of 'Moth Eye' Antireflection Surfaces
journal, July 1982

Wilson, S. J.; Hutley, M. C.
Optica Acta: International Journal of Optics, Vol. 29, Issue 7
https://doi.org/10.1080/713820946

Far‐ir heterodyne radiometric measurements with quasioptical Schottky diode mixers
journal, July 1978

Fetterman, H. R.; Tannenwald, P. E.; Clifton, B. J.
Applied Physics Letters, Vol. 33, Issue 2
https://doi.org/10.1063/1.90288

Night Moth Eye Window for the Millimetre and Sub-millimetre Wave Region
journal, December 1983

Ma, J. Y. L.; Robinson, L. C.
Optica Acta: International Journal of Optics, Vol. 30, Issue 12
https://doi.org/10.1080/713821119

Computer-aided analysis and design of corrugated TE11 to HE11 mode converters in highly overmoded waveguides
journal, July 1985

Thumm, M.
International Journal of Infrared and Millimeter Waves, Vol. 6, Issue 7
https://doi.org/10.1007/BF01009672

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Similar Records

Title: Self-calibrated active pyrometer for furnace temperature measurements

Abstract

Citation Formats

The Optical Properties of 'Moth Eye' Antireflection Surfaces journal, July 1982

Far‐ir heterodyne radiometric measurements with quasioptical Schottky diode mixers journal, July 1978

Night Moth Eye Window for the Millimetre and Sub-millimetre Wave Region journal, December 1983

Computer-aided analysis and design of corrugated TE11 to HE11 mode converters in highly overmoded waveguides journal, July 1985

The Optical Properties of 'Moth Eye' Antireflection Surfaces
journal, July 1982

Far‐ir heterodyne radiometric measurements with quasioptical Schottky diode mixers
journal, July 1978

Night Moth Eye Window for the Millimetre and Sub-millimetre Wave Region
journal, December 1983

Computer-aided analysis and design of corrugated TE11 to HE11 mode converters in highly overmoded waveguides
journal, July 1985