Blackbodies

Fluke Calibrator Video

October 24, 2010

Emissivity makes a temperature difference for infrared thermometers. In the YouTube video below, Frank Liebman, an engineer with Fluke Corporation’s Hart Scientific Division demonstrates the impact that surface emissivity has on temperature measurement and temperature calibration using a modified Fluke blackbody calibrator and Fluke Thermal Imager. We were surprised to see that no one commented [...]

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Electro Optical Industries BB Emissivity Coatings

November 5, 2009

Electro Optical Industries (EOI) uses one of two high emissivity coatings on the surface of its blackbodies. The EOI mid-temperature coating is used on both cavity and flat plate blackbodies that have a maximum operating temperatures of up to 210 °C. Read the rest by visiting their webpage at: www.electro-optical.com/html/bb_rad/emissivity/emis_data.asp

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Blackbody Emissivity Primer

October 30, 2009

From the Electro-Optical Industries website: “Effective emissivity is the ratio of the total amount of energy exiting pharmacy websites a blackbody to that which is predicted by Planck’s law. This is the value most frequently referred to as “emissivity”. Effective emissivity of a cavity type blackbody will normally be much higher than the surface emissivity [...]

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Measurements of Pool-Fire Temperature Using IR Technique. (419 K)

May 12, 2009

By Qian, C.; Saito, K. Ref: Combustion Institute/Central and Western States (USA) and Combustion Institute/Mexican National Section and American Flame Research Committee. Combustion Fundamentals and Applications. Joint Technical Meeting. Proceedings. April 23-26, 1995, San Antonio, TX, Gore, J. P., Editor(s), 81-86 pp, 1995. Sponsor: National Institute of Standards and Technology, Gaithersburg, MD Abstract: We made [...]

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EMISSIVITY EVALUATION OF FIXED POINT BLACKBODIES

December 12, 2008

A paper by Sergey Mekhontsev, Vladimir Khromchenko, Alexander Prokhorov, Leonard Hanssen National Institute for Standards and Technology, Gaithersburg, MD, USA Presented at the 9th International Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2004), June 22-25, 2004, Dubrovnik, Croatia, Proceedings, Vol. 1, ed. by D. Zvizdic (2004), pp. 581-586. ABSTRACT A new [...]

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IR spectral characterization of customer blackbody sources:

December 5, 2008

“First calibration results” A paper by S. Mekhontsev, M. Noorma, A. Prokhorov, and L. Hanssen from NIST in the USA, Presented at Thermosense XXVIII, ed. by Jonathan J. Miles, G. Raymond Peacock, and Kathryn M. Knettel, Proc. of SPIE 6205, 620503 (2006). ABSTRACT: We summarize recent progress in our infrared (IR) spectral radiance metrology effort. [...]

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