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You searched on: Author: gregory strouse

Displaying records 21 to 30 of 59 records.
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21. Recommended List of Common Impurities for Metallic Fixed-point Materials of the ITS-90
Published: 8/18/2008
Authors: Dean C Ripple, Anatoly Pokhodun, Peter Steur, Gregory F Strouse
Abstract: Working Group 1 of the Consultative Committee for Thermometry (CCT) has recommended methods for estimating the uncertainties of fixed-point temperatures attributable to chemical impurities [1]. These methods require chemical analysis of all commonly ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832299

22. Standard Platinum Resistance Thermometer Calibrations from the Ar TP to the Ag FP
Series: Special Publication (NIST SP)
Report Number: 250-81
Published: 12/19/2007
Author: Gregory F Strouse
Abstract: The National Institute of Standards and Technology (NIST) is in charge of realizing, maintaining, and disseminating the international Scale of 1990 (ITS-90). The Standard Platinum Resistance Thermometer (SPRT) Calibration Laboratory of the NIST ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904572

23. Acoustic Thermometry Results From 271 K to 552 K
Published: 9/8/2007
Authors: Dean C Ripple, Gregory F Strouse, Michael R Moldover
Abstract: The NIST Acoustic Thermometer determines the thermodynamic temperature from measurements of ratios of the speed of sound of argon in a spherical cavity. We report recent results for T - T90 on 12 isotherms spanning the range 271 K to 552 K. (T is th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831005

24. Selection of Alternatives to Liquid-in-Glass Thermometers
Published: 10/1/2005
Authors: Dean C Ripple, Gregory F Strouse
Abstract: A desire to increase automation or to eliminate the use of mercury has prompted several ASTM committees to consider alternatives to ASTM Liquid-in-Glass (LiG) thermometers. In this paper, we address the technical issues of choosing an alternative. W ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830919

25. NIST Realization of the ITS-90 Gallium Fixed Point
Published: 8/1/2005
Author: Gregory F Strouse
Abstract: As defined by the International Temperature Scale of 1990 (ITS-90), the gallium melting-point cell (29.7646 C) is used in the calibration of standard platinum resistance thermometers (SPRTs) for the ITS-90 subranges from 39 C to 30 C and from 0 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830932

26. Stabilization of SPRTs for ITS-90 Calibrations
Published: 8/1/2005
Authors: Dennis Brooke Minor, Gregory F Strouse
Abstract: At the National Institute of Standards and Technology (NIST), the ITS-90 calibration of standard platinum resistance thermometers (SPRTs) is performed in the Platinum Resistance Thermometer Calibration Laboratory over the temperature range from -189 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830930

27. NIST Certification of ITS-90 Fixed-Point Cells From 83.8058 K to 1234.93 k: Methods and Uncertainties
Published: 1/1/2005
Author: Gregory F Strouse
Abstract: The certification of ITS 90 fixed-point cells from the Ar triple point (83.8058 K) to the Ag freezing point (1234.93 K) is an integral part of the calibration services offered by the NIST Thermometry Group. This service is used to qualify new fixed-p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830876

28. Standard Reference Material 1751 - A Gallium Melting-Point Standard
Published: 8/1/2004
Author: Gregory F Strouse
Abstract: The melting point of gallium %2829%2E7646%B0C%29 is a defining thermometric fixed point of the International Temperature Scale of 1990 %28ITS%2D90%29%2E Realization of this melting point is performed using a fixed%2Dpoint cell containing high%2Dpuri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830886

29. Internal Measurement Assurance for the NIST Realization of the ITS-90 from 83.8 K to 1234.93 K
Published: 10/1/2003
Author: Gregory F Strouse
Abstract: The National Institute of Standards and Technology (NIST) is responsible for realizing, maintaining, and disseminating the International Temperature Scale of 1990 (ITS-90) to the United States of America. The ITS-90 fixed-point cells necessary to cal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830792

30. Performance Assessment of Resistance Ratio Bridges used for the Calibration of SPRTs
Published: 10/1/2003
Authors: Gregory F Strouse, K D Hill
Abstract: Automatic balancing dc and ac resistance ratio bridges are the primary measurement devices used by National Measurement Institutes for the calibration of standard platinum resistance thermometers (SPRTs) on the International Temperature Scale of 1990 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830788



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