Author: B. W. Mangum
Publisher:
ISBN:
Category : Resistance thermometers
Languages : en
Pages : 372

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Author: John L. Riddle
Publisher:
ISBN:
Category : Temperature measurements
Languages : en
Pages : 136

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Book Description
The monograph describes the methods and equipment employed at the National Bureau of Standards for calibrating standard platinum resistance thermometers (SPRT) on the International Practical Temperature Scale (IPTS-68).The official text of the scale is clarified and characteristics of the scale are described.Several designs of SPRT's are shown and discussed in the light of the requirements and recommendations on the text of the IPTS-68.Possible sources of error such as those due to the internal and external self-heating effects and the immersion characteristics of SPRT's are described in detail.Precautions and limitations for the mechanical and thermal treatment and for the shipment of SPRT's are indicated, and a guide is given for those desiring the thermometer calibration services of NBS.(Modified author abstract).

Author: nist
Publisher:
ISBN: 9781495203282
Category :
Languages : en
Pages : 92

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Book Description
The National Institute of Standards and Technology (NIST) isin charge of realizing, maintaining, and disseminating the international Scale of 1990 (ITS-90). The Standard Platinum Resistance Thermometer (SPRT) Calibration Laboratory of the NIST Thermometry Group realizes the ITS-90 from the argon triple point (Ar TP, 189.3442 °C) to the silver freezing point (Ag FP, 961.78 °C) for the calibration of SPRTs. This special publication describes the calibration services, methods, measurement assurance, and uncertainties for the NIST ITS-90 calibration SPRTs.

Author: W... L. Tew
Publisher: Createspace Independent Publishing Platform
ISBN: 9781495924927
Category :
Languages : en
Pages : 0

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Book Description
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 characteristics of a group of 20 capsule-type SPRTs within the range of temperatures between 13.8033 K and 429.7485 K. The platinum wire used for the construction of the resistor elements of this SRM was derived from platinum bar stock with a chemical purity of 99.999 % by weight. Each of the 20 units has been evaluated, certified, and calibrated according to the definitions of the ITS-90. The resistance characteristics of all 20 units have been measured at 11 fixed point temperatures from 4.22 K to 429.7485 K as well as at least 7 other intermediate points. The procedures used in performing the calibrations and the supplemental measurements are documented in this publication. The resulting analysis pertaining to each individual unit, as well as the SRM sample population as a whole, is presented in detail.

Author: Robin E. Bentley
Publisher: Springer Science & Business Media
ISBN: 9789814021104
Category : Science
Languages : en
Pages : 214

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Book Description
Volume 2 of the Handbook of Temperature Measurement, prepared by the CSIRO National Measurement Laboratory, Australia, discusses the operation, calibration and usage of resistance and liquid-in-glass thermometers. Both standard-platinum-resistance thermometers and industrial-resistance thermometers are examined, and details on a variety of resistance-measuring techniques are given. Also included is a final version of the official text of the International Temperature Scale 1990 (ITS-90). The authors of this volume are John J. Connolly and E. Corina Horrigan.

Author: Jacquelyn A. Wise
Publisher:
ISBN:
Category : Temperature measurements
Languages : en
Pages : 136

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Author: Robert Joseph Corruccini
Publisher:
ISBN:
Category : Temperature measuring instruments
Languages : en
Pages : 16

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Author: Thomas Lyman Bewick
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 76

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Author: L. Crovini
Publisher:
ISBN: 9789282634387
Category :
Languages : en
Pages : 86

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Author: Cecil Robert Barber
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 56

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Book Description