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Author: gregory strouse

Displaying records 21 to 30 of 46 records.
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21. Techniques for Primary Acoustic Thermometry to 800 K
Published: 9/1/2003
Authors: Dean C Ripple, Dana R Defibaugh, Michael R Moldover, Gregory F Strouse
Abstract: The NIST Primary Acoustic Thermometer will measure the difference between the International TemperatureScale of 1990 and the Kelvin Thermodynamic Scale throughout the range 273 K to 800 K with uncertainties of only afew millikelvins. The acoustic the ...

22. NIST Methods of Estimating the Impurity Uncertainty Component for ITS-90 Fixed-Point Cells from the Ar TP to the Ag FP
Published: 4/1/2003
Author: Gregory F Strouse
Abstract: The NIST Platinum Resistance Thermometry Laboratory uses International Temperature Scale of 1990 (ITS-90) fixed-point cells to calibrate standard platinum resistance thermometers as ITS-90 defining standards. One important component of uncertainty in ...

23. Summary of Comparison of Realizations of the ITS-90 Over the Range 83.8058 K to 933.473 K: CCT Key Comparison CCT-K3
Published: 4/1/2002
Authors: Billy Wilson Mangum, Gregory F Strouse, William F Guthrie, R Pello, M F Stock, E Renaot, Y Hermier, G Bonnier, P Marcarino, K S Gam, K H Kang, Y G Kim, J V Nicholas, D. R White, T D Dransfield, Y Duan, Y Qu, J Connolly, R L Rusby, J Gray, G J Sutton, D I Head, K D Hill, A G Steele, K Nara, Tony J. Tegeler, U Noatsch, D Heyer, B Fellmuth, B Thiele-Krivoj, S Duris, A I Pokhodun, N P Moiseeva, A G Ivanova, P A. de Groot, J F Dubbeldam
Abstract: This is a report to the Comite Consultatif de Thermometrie (CCT) on Key Comparison 3, i.e., the comparison of realizations of the ITS-90 over the range 83.8058 K to 933.473 K. The differences in the realizations of the various fixed points in this r ...

24. Standard Reference Material 1750: Standard Platinum Resistance Thermometers, 13.8033 K to 429.7485 K
Series: Special Publication (NIST SP)
Report Number: 260-139
Published: 11/1/2001
Authors: Weston Leo Tew, Gregory F Strouse
Abstract: The Standard Platinum Resistance Thermometer (SPRT) is defined by the International Temperature Scale of 1990 (ITS-90) as the interpolating instrument for temperatures between 13.8033 K and 1234.93 K. This SRM concerns the calibration properties of a ...

25. The Role of High-purity Noble Metals in Precision Thermometry
Published: 11/1/2001
Authors: Dean C Ripple, Gregory F Strouse, Weston Leo Tew
Abstract: A variety of alternate calibration schemes which approximate the ITS-90 are possible when using high-purity noble metals. The high purity of the sensor materials allows the use of correlations that exist between the measured properties at fixed point ...

26. Investigation of the Non-Uniqueness of the ITS-90 in the Range 660 C to 962 C
Published: 6/1/2001
Authors: G T. Furukawa, Gregory F Strouse
Abstract: Preliminary results are reported on the non-uniqueness of the ITS-90 using high temperature SPRTs (HTSPRTs) in the range 660 C to 962 C. To achieve temperature stability and uniformity of the test HTSPRTs, the method employs the thermal isolation ...

27. New NIST Mercury Triple-Point Cells
Published: 6/1/2001
Authors: Gregory F Strouse, J Lippiatt
Abstract: Six new Hg triple-point (TP) cells (234.3156 K) were manufactured in the NIST PRT Laboratory for use in the realization of the International Temperature Scale of 1990 (ITS90). The fixed-point cells consisted of both glass and stainless steel designs ...

28. Small Fixed-Point Cells for Use in Dry Well Block Calibrators
Published: 6/1/2001
Author: Gregory F Strouse
Abstract: As part of a research project for the Combined Calibration Group (CCG) of the U.S. Armed Forces, three rugged fixed-point cells were developed for use in dry well block calibrators (DWBCs). The small fixed-point cells of the water triple point (0.01 ...

29. Standard Reference Material 1745: Indium Freezing-Point Standard and Standard Reference Material 2232: Indium DSC Melting-Point Standard
Series: Special Publication (NIST SP)
Report Number: 260-132
Published: 6/1/2001
Author: Gregory F Strouse
Abstract: The freezing point of indium (156.5985 degrees C) is a defining fixed point of the International Temperature Scale of 1990 (ITS-90). Realization of this freezing point is performed using a fixed-point cell containing high-purity (greater than or equa ...

30. The NIST Industrial Thermometer Calibration Laboratory
Published: 6/1/2001
Authors: C D Vaughn, Gregory F Strouse
Abstract: The NIST Industrial Thermometer Calibration (ITC) Laboratory provides calibrations of industrial thermometers over the range from 196 C to 550 C. The different types of thermometers include liquid-in-glass (LiG), thermistors, thermocouples (<300 ...

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