Practical Implementation of the Mise en Pratique for the Definition of the Kelvin Above the Silver Point

Machin, G.; Bloembergen, P.; Anhalt, K.; Hartmann, Jürgen; Sadli, M.; Saunders, Peter M.; Woolliams, Emma; Yamada, Yoshiro; Yoon, Howard W.

doi:10.1007/s10765-010-0834-5

Cited by 58 publications

(63 citation statements)

References 16 publications

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“…The upper limit of the WG4 averaging process is the copper point (higher temperatures are under discussion in CCT WG5 [39]). The treatment of T −T 90 below 4.2 K is given in Sect.…”

Section: Consensus Estimate Of T − T 90 By Averaging Of Datamentioning

confidence: 99%

Present Estimates of the Differences Between Thermodynamic Temperatures and the ITS-90

Fischer

Podesta

Hill³

et al. 2011

Int J Thermophys

122

165

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At the request of the Consultative Committee for Thermometry (CCT), Working Group 4 (WG4) has critically reviewed all available measurements of the differences between thermodynamic and ITS-90 temperatures, (T − T 90 ), and documented the conversion of older data to the ITS-90. Particular attention has been given to the uncertainties. Based on this review, we provide consensus estimates of T − T 90 for selected measurements from 0.65 K to 1358 K. We provide two analytic functions for T − T 90 , one for use from 8 K to the triple point of water (T TPW ) and one for use above T TPW . The small discontinuity of the derivative dT 90 /dT at T TPW is discussed.J. Fischer (B) · L. Wolber PTB,We also identify temperature ranges where researchers are encouraged to undertake high-accuracy measurements of T − T 90 .

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“…The upper limit of the WG4 averaging process is the copper point (higher temperatures are under discussion in CCT WG5 [39]). The treatment of T −T 90 below 4.2 K is given in Sect.…”

Section: Consensus Estimate Of T − T 90 By Averaging Of Datamentioning

confidence: 99%

Present Estimates of the Differences Between Thermodynamic Temperatures and the ITS-90

Fischer

Podesta

Hill³

et al. 2011

Int J Thermophys

122

165

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“…A task group of CCT-WG5 (radiation thermometry) has prepared text for the next version of the MeP-K, together with a larger supplementary guide that describes the possible methods of high-temperature realization [7].…”

Section: Radiometric Methodsmentioning

confidence: 99%

The Roles of the Mise en Pratique for the Definition of the Kelvin

et al. 2010

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The mise en pratique ("practical realization") for the definition of the kelvin (MeP-K) was created by the Consultative Committee for Thermometry (CCT) in 2006 to give practitioners of thermometry a guide to the realization of the kelvin, i.e., measurement of temperature in kelvins, in accord with the International System of Units. In this article, the present and the future content of the MeP-K, the relationship of the MeP-K to other documents relevant to thermometry, the categorization of thermometry techniques in the MeP-K, and the benefits of proposed additions to the 2006 version of the MeP-K are discussed. The three categories of measurements within the MeP-K are: (1) primary methods for measuring thermodynamic temperature T ;

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“…Both methods require a highly linear reference radiation thermometer to assign the temperature to either the variable temperature or HTFP sources and the capability of determining its spectral response. However, it is expected that in the future the mise en pratique of the definition of the kelvin (MeP-K) [4,5] will provide defined melting temperature values and uncertainties for HTFPs as a formal approximation to the kelvin, and remove both these requirements, since thermometers can be calibrated directly against the HTFPs. At that time, the second method will become much simpler to realise, and much of the equipment and procedure for realising the ITS-90 could become redundant.…”

Section: Introductionmentioning

confidence: 99%

Traceable radiation thermometer calibration to ITS-90 above the silver point at the National Physical Laboratory

Lowe

Machin

2015

17th International Congress of Metrology

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Le National Physical Laboratory est accrédité par le United Kingdom Accreditation Service (UKAS) pour fournir ITS-90 étalonnage de la température des thermomètres à radiation avec une meilleure mesure la capacité incertitude de 0,05% (k = 2) de la température de 1000 ° C à 3000 ° C. Pour être en mesure de fournir ce niveau d'incertitude comme un service de routine nécessite très faibles incertitudes dans l'équipement utilisé pour réaliser et diffuser l'échelle. Tous les certificats délivrés pour l'étalonnage de la température sont fait en termes de l'ITS-90, mais cela peut être réalisé de deux manières très différentes sur le plan conceptuel. Tout d'abord, par comparaison avec un thermomètre à rayonnement standard qui a lui-même été étalonné directement conformément à l'ITS-90 définition, et à médiation par l'utilisation d'un corps noir à température variable; ou, d'autre part, par la mesure de sources à haute température fixe le point de corps noirs qui ont a priori affectée ITS-90 températures. Ce document décrit l'équipement et les procédés utilisés au NPL pour étalonner les pyromètres à ITS-90 ci-dessus le point d'argent avec les incertitudes les plus bas de ces deux routes.

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Practical Implementation of the Mise en Pratique for the Definition of the Kelvin Above the Silver Point

Cited by 58 publications

References 16 publications

Present Estimates of the Differences Between Thermodynamic Temperatures and the ITS-90

Present Estimates of the Differences Between Thermodynamic Temperatures and the ITS-90

The Roles of the Mise en Pratique for the Definition of the Kelvin

Traceable radiation thermometer calibration to ITS-90 above the silver point at the National Physical Laboratory

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