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You searched on: Author: gregory strouse

Displaying records 21 to 30 of 63 records.
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21. Room Temperature Acoustic Transducers for High-Temperature Thermometry
Published: 7/9/2012
Authors: Dean C Ripple, William E. Murdock, Gregory F Strouse, Keith A Gillis, Michael R Moldover
Abstract: We have successfully conducted highly-accurate, primary acoustic thermometry at 600 K using a sound source and a sound detector at room temperature. We describe the source, the detector, and the ducts that connected them to our cavity resonator. Thi ...

22. Thermal Analysis of Refrigeration Systems Used for Vaccine Storage
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7656
Published: 11/2/2009
Authors: Michal J Chojnacky, W Wyatt Miller, Dean C Ripple, Gregory F Strouse
Abstract: Each year, billions of dollars of vaccines are stored in refrigerators at the facilities of a variety of medical providers. Many vaccines must be maintained in the range 2 °C to 8 °C to retain product potency. We have tested the performance of two t ...

Published: 2/1/2009
Authors: Kendra Hill, D.J. Gee, Christina Dawn Cross, Gregory F Strouse
Abstract: The use of liquid-in-glass thermometers is described in many documentary standards in the fields of environmental testing, material testing, and material transfer. Many national metrology institutes, including the National Institute of Standards and ...

24. Observations on Non-Uniqueness and Uncertainty in the SPRT Interpolations of ITS-90
Published: 1/6/2009
Authors: Douglas R White, Gregory F Strouse

25. Maintenance and Validation of Liquid-in-Glass Thermometers
Series: Special Publication (NIST SP)
Report Number: 1088
Published: 1/1/2009
Authors: Christina Dawn Cross, Dean C Ripple, Gregory F Strouse
Abstract: Liquid-in-glass thermometers are pervasive in use throughout industry and provide a convenient method for measuring temperature over for a broad range of applications with reasonable stability and accuracy. However, liquid-in-glass thermometers are ...

26. 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 ...

27. 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 ...

28. 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 ...

29. 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 ...

30. 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 ...

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  • SP 250-XX: Calibration Services
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