Dissemination of thermodynamic temperature above the freezing point of silver

Sadli, M.; Machin, G.; Anhalt, K.; Bourson, F.; Briaudeau, S.; Campo, D. del; Diril, A.; Kozlova, Olga; Lowe, D.; Amor, José Manuel Mantilla; Martı́n, M. J.; McEvoy, H C; Ojanen-Saloranta, Maija; Pehlivan, O.; Rougié, B.; Salim, S. G. R.

doi:10.1098/rsta.2015.0043

Cited by 16 publications

(15 citation statements)

References 31 publications

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“…The results were very satisfactory; the temperatures of all the cells were in good agreement to within 1 K at all temperatures and well within the standard uncertainties of the measurements. Typical results are shown in Figure 2 for the Re-C cell and full details can be found in [23]. It is considered that the indirect approach trialled here had the more exacting test of the two proposed methods.…”

Section: Dissemination Of Thermodynamic Temperature Above the Freezin...mentioning

confidence: 96%

Summary of achievements of the European Metrology Research Programme Project “Implementing the new Kelvin” (InK 1)

et al. 2016

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Section: Dissemination Of Thermodynamic Temperature Above the Freezin...mentioning

confidence: 96%

Summary of achievements of the European Metrology Research Programme Project “Implementing the new Kelvin” (InK 1)

et al. 2016

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“…Lowest uncertainties of around 0.1 K (coverage factor k = 1) at 2800 K are possible with primary radiometric thermometry. Practical guidelines for the realization, including typical uncertainty estimates, will be found in the MeP-K appendix 'Absolute primary radiometric thermometry' and references therein, see at present [23][24][25][26][27].…”

Section: (B) Spectral-band Radiometric Thermometry (I) Principle Of Primary Radiometric Thermometrymentioning

confidence: 99%

The kelvin redefinition and its mise en pratique

Fellmuth

Fischer

Machin

et al. 2016

Phil. Trans. R. Soc. A.

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In 2018, it is expected that there will be a major revision of the International System of Units (SI) which will result in all of the seven base units being defined by fixing the values of certain atomic or fundamental constants. As part of this revision, the kelvin, unit of thermodynamic temperature, will be redefined by assigning a value to the Boltzmann constant k. This explicit-constant definition will define the kelvin in terms of the SI derived unit of energy, the joule. It is sufficiently wide to encompass any form of thermometry. The planned redefinition has motivated the creation of an extended mise en pratique ('practical realization') of the definition of the kelvin (MeP-K), which describes how the new definition can be put into practice. The MeP-K incorporates both of the defined International Temperature Scales (ITS-90 and PLTS-2000) in current use and approved primary-thermometry methods for determining thermodynamic temperature values. The MeP-K is a guide that provides or makes reference to the information needed to perform measurements of temperature in accord with the SI at the highest level. In this article, the background and the content of the extended second version of the MeP-K are presented.

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“…The uncertainties and temperature differences between the participating instruments are still under consideration; however the overall agreement seem to be within 2 K at the highest temperatures [10]. …”

Section: Dissemination Using Absolutely Calibrated Filter Radiometersmentioning

confidence: 99%

“…At this stage, the uncertainties and temperature differences between the participating NMIs are still under consideration and should be published in the near future [10]; they all lie within 1 K even at the highest temperatures.…”

Section: Dissemination Using Htfpsmentioning

confidence: 99%

Erratum to: Experimental assessment of thermodynamic temperature dissemination methods at the highest temperatures

Sadli

Anhalt

Bourson

et al. 2015

17th International Congress of Metrology

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Due to problems that have occurred during the conversion of the article into PDF format, and the resulting loss of many special characters, a new correct version of the article is published below.Abstract. In the frame of the European Metrology Research Programme (EMRP)-funded joint research project "Implementing the new kelvin" one work package is devoted to the assessment of two different methods of dissemination of the thermodynamic temperature. These two methods are the dissemination via high temperature fixed points (HTFP) with assigned thermodynamic temperatures and the dissemination by radiometers or radiation thermometers calibrated in terms of thermodynamic temperature. To achieve a thorough assessment of these two distinct dissemination methods two dissemination exercises were organised in the form of comparisons. In one case the circulating artefacts were off-the-shelf high-temperature fixed point cells with transition temperatures ranging from 1324 °C to 2474 °C, in the other case absolutely calibrated pyrometers and filter radiometers were compared in the temperature range 1000 °C to 2500 °C. This work showed that both schemes offered suitable routes for dissemination with competing advantages and drawbacks and would most probably help disseminating thermodynamic temperature in the future at the level of 1 K to 2 K uncertainty over the whole temperature range.Résumé. Dans le cadre du projet de recherche concertée financé par le programme européen de recherche en métrologie (EMRP) "Implementing the new kelvin", un des lots de tâches, le workpackage 2, s'attèle à l'évaluation de deux méthodes différentes de dissémination de la température thermodynamique : une méthode reposant sur l'usage de cellules points fixes à hautes températures, ayant des températures thermodynamiques affectées à leurs transitions de phase ; une seconde méthode reposant sur la dissémination à l'aide de pyromètres étalonnés en absolu ou de radiomètres à filtres traçables au radiomètre cryogénique à substitution électrique. Afin de réaliser une évaluation complète des deux méthodes, deux comparaisons ont été organisées entre laboratoires européens dans un cas en utilisant un lot de cellules à points fixes à haute température entre 1324 °C et 2474 °C et dans l'autre cas en réunissant dans un même laboratoire, le PTB, quatre instruments étalonnés en absolu et en les comparant face à un corps noir de température variable entre 1000 °C et 2500 °C. Cette étude a prouvé en premier lieu que les deux méthodes peuvent être mise en oeuvre avec succès et peuvent servir, en fonction des équipements disponibles en laboratoire, d'excellents moyens pour la dissémination de la température thermodynamique avec des incertitudes de l'ordre de 1 K à 2 K sur tout le domaine de température.

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Dissemination of thermodynamic temperature above the freezing point of silver

Cited by 16 publications

References 31 publications

Summary of achievements of the European Metrology Research Programme Project “Implementing the new Kelvin” (InK 1)

Summary of achievements of the European Metrology Research Programme Project “Implementing the new Kelvin” (InK 1)

The kelvin redefinition and its mise en pratique

Erratum to: Experimental assessment of thermodynamic temperature dissemination methods at the highest temperatures

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