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You searched on: Author: weston tew

Displaying records 41 to 50 of 59 records.
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41. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830653

42. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830763

43. Archival and Theoretical Considerations for Isotopic Dependence in the e-H^d2^ Fixed Points
Published: 6/1/2001
Authors: F Pavese, Weston Leo Tew, A G Steele
Abstract: We examine these isotopic dependence for the case of the e-H2 triple point (TP), and the two vapor pressure (VP) points of the ITS-90 defined near 33 kPa and 101 kPa. The archival experimental data allows predictions to be made for the shift in the T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830740

44. Special Problems When Realising the Triple Point of Hydrogen as a Defining Fixed Point of the ITS-90
Published: 6/1/2001
Authors: B Fellmuth, D I Head, F Pavese, A Szmyrka-Grzebyk, Weston Leo Tew
Abstract: The two special problems, which appear when realising the triple point of hydrogen as a temperature fixed point due to the influences of the deuterium content and the catalyst, have been investigated by filling a large number of sealed triple-point c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830758

45. The Kelvin and Temperature Measurements
Series: Journal of Research (NIST JRES)
Published: 1/1/2001
Authors: Billy Wilson Mangum, G T. Furukawa, Kenneth Gruber Kreider, Christopher W Meyer, Dean C Ripple, Gregory F Strouse, Weston Leo Tew, Robert D. Saunders, Bettye C Johnson, Howard W Yoon, Michael R Moldover, Charles E Gibson
Abstract: The International Temperature Scale of 1990 (ITS90) is defined from 0.65 K upwards to the highest temperature measurable by spectral radiation thermometry, the radiation thermometry being based on the Planck radiation law. Part I of this paper descr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830671

46. Non-Uniquenes of the ITS-90 From 13.8033 K to 24.5561 K
Published: 6/1/1999
Authors: Christopher W Meyer, Gregory F Strouse, Weston Leo Tew
Abstract: The International Temperature Scale of 1990 (ITS-90) is defined in the region 3.0 K to 24.5561 K by an interpolating constant volume gas thermometer (ICVGT) that is calibrated at three specified fixed points. From 13.8033 K to 1234.93 K the ITS-90 i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830632

47. A Revised Assessment of Calibration Uncertainties for Capsule Type Standard Platinum and Rhodium-Iron Resistance Thermometers
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6138
Published: 3/1/1998
Authors: Weston Leo Tew, Gregory F Strouse, Christopher W Meyer
Abstract: Calibration uncertainties for capsule type standard platinum and rhodium-iron resistance thermometers are reviewed and updated. Calibration procedures, thermometer characteristics, scale realization methods, and measurement techniques are described ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830585

48. Recent Advances in the Realization and Dissemination of the ITS-90 below 83.8K at NIST
Published: 2/13/1998
Authors: Weston Leo Tew, Christopher W Meyer, Gregory F Strouse, G T. Furukawa
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901723

49. The Capsule-Type Standard Platinum Resistance Thermometer as a Standard Reference Material: SRM 1750
Published: 2/12/1998
Authors: Weston Leo Tew, Gregory F Strouse
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901725

50. A Flux Locked Current Source Reference
Published: 4/1/1993
Authors: Weston Leo Tew, Edwin Ross Williams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=24805



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  • SP 250-XX: Calibration Services
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