Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method

The resistance of metals is a function of applied pressure, and this dependence is large enough to be significant in the calibration of transient hot-wire thermal conductivity instruments. We recommend that for the highest possible accuracy, the instrument’s hot wires should be calibrated in situ. I...

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Detalles Bibliográficos
Autores principales: Roder, H. M., Perkins, R. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1989
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4962892/
https://www.ncbi.nlm.nih.gov/pubmed/28053405
http://dx.doi.org/10.6028/jres.094.014
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author Roder, H. M.
Perkins, R. A.
author_facet Roder, H. M.
Perkins, R. A.
author_sort Roder, H. M.
collection PubMed
description The resistance of metals is a function of applied pressure, and this dependence is large enough to be significant in the calibration of transient hot-wire thermal conductivity instruments. We recommend that for the highest possible accuracy, the instrument’s hot wires should be calibrated in situ. If this is not possible, we recommend that a value of γ, the relative resistance change with pressure, of −2×10(−5) MPa(−1) be used to account for the pressure dependence of the platinum wire’s resistance.
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spelling pubmed-49628922017-01-04 Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method Roder, H. M. Perkins, R. A. J Res Natl Inst Stand Technol Article The resistance of metals is a function of applied pressure, and this dependence is large enough to be significant in the calibration of transient hot-wire thermal conductivity instruments. We recommend that for the highest possible accuracy, the instrument’s hot wires should be calibrated in situ. If this is not possible, we recommend that a value of γ, the relative resistance change with pressure, of −2×10(−5) MPa(−1) be used to account for the pressure dependence of the platinum wire’s resistance. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1989 /pmc/articles/PMC4962892/ /pubmed/28053405 http://dx.doi.org/10.6028/jres.094.014 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Roder, H. M.
Perkins, R. A.
Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title_full Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title_fullStr Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title_full_unstemmed Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title_short Relation Between Wire Resistance and Fluid Pressure in the Transient Hot-Wire Method
title_sort relation between wire resistance and fluid pressure in the transient hot-wire method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4962892/
https://www.ncbi.nlm.nih.gov/pubmed/28053405
http://dx.doi.org/10.6028/jres.094.014
work_keys_str_mv AT roderhm relationbetweenwireresistanceandfluidpressureinthetransienthotwiremethod
AT perkinsra relationbetweenwireresistanceandfluidpressureinthetransienthotwiremethod

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