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Title: Active radiometer for self-calibrated furnace temperature measurements

Radiometer with a probe beam superimposed on its field-of-view for furnace temperature measurements. The radiometer includes a heterodyne millimeter/submillimeter-wave receiver including a millimeter/submillimeter-wave 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.
 [1];  [2];  [3];  [4];  [5]
  1. (Bedford, MA)
  2. (Chestnut Hill, MA)
  3. (Newtown Square, PA)
  4. (Chester Springs, PA)
  5. (Kennewick, WA)
Issue Date:
OSTI Identifier:
Electro-Pyrolysis, Inc. (Wayne, PA); Massachusetts Institute of Technology (Cambridge, MA); Battelle Memorial Institute (Richmond, WA) PNNL
Patent Number(s):
US 5573339
Contract Number:
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA
Country of Publication:
United States
active; radiometer; self-calibrated; furnace; temperature; measurements; probe; beam; superimposed; field-of-view; heterodyne; millimeter; submillimeter-wave; receiver; including; source; probing; adapted; receive; radiation; surface; measured; emission; portion; reflection; energy; reflected; related; emissivity; simultaneous; measurement; serves; time; calibration; simultaneous measurement; furnace temperature; receive radiation; surface emissivity; probe beam; temperature measurements; beam energy; energy reflected; surface temperature; temperature measurement; heterodyne millimeter; temperature measure; beam superimposed; /374/