Temperature studies in the new Sandia length and mass primary standards labs

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The new Primary Standards Building at Sandia provides state-of-the- art environmental control. The CMM and gage block labs are controlled to 0.01 C, while the mass, force, and general dimensional labs are controlled to 0.1 C. Independent control systems employ sensors mounted in central locations in the various labs. In calibration work, however, one is concerned with the actual temperatures, drifts, and gradients of the equipment and standards during use. This paper presents studies of temporal and spatial variations in temperature of equipment and standards in our labs under various conditions. An `alter-ego` heat source typically was used to represent ... continued below

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14 p.

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Kwak, J.F. August 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 15 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The new Primary Standards Building at Sandia provides state-of-the- art environmental control. The CMM and gage block labs are controlled to 0.01 C, while the mass, force, and general dimensional labs are controlled to 0.1 C. Independent control systems employ sensors mounted in central locations in the various labs. In calibration work, however, one is concerned with the actual temperatures, drifts, and gradients of the equipment and standards during use. This paper presents studies of temporal and spatial variations in temperature of equipment and standards in our labs under various conditions. An `alter-ego` heat source typically was used to represent human presence. The results demonstrate strong short-term drifts and long term-gradients upon the introduction of a heat source. The equipment can warm by up to 1 C during use. Strategies for minimizing the impact of such changes on calibration results and uncertainties are discussed.

Physical Description

14 p.

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OSTI as DE96011680

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  • 1996 National Conference of Standards Laboratories (NCSL), Monterey, CA (United States), 25-29 Aug 1996

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  • Other: DE96011680
  • Report No.: SAND--96-0225C
  • Report No.: CONF-9608109--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 278398
  • Archival Resource Key: ark:/67531/metadc671335

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • April 14, 2016, 7:08 p.m.

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Kwak, J.F. Temperature studies in the new Sandia length and mass primary standards labs, article, August 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc671335/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.