| Zugriffsnummer | 24977 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | The roles of the Mise en Pratique.noitalic for the definition of the KELVIN |
| Autor(in); Institution |
Ripple, C.; National Institute of Standards and Technology (NIST), Gaithersburg, USA
Davis, R.; Bureau International des Poids et mesures (BIPM), Sevres, FRANCE
Fellmuth, Bernd; 7.4, Temperatur, PTB-Berlin
Fischer, Joachim; 7.4, Temperatur, PTB-Berlin
Machin, Graham; National Physical Laboratory (NPL), Teddington, UK
Quinn, Terry; Bureau International des Poids et mesures (BIPM), Sevres, FRANCE
Steur, P.; Istituto Nazionale di Ricerca Metrologica (INRiM), Torino, ITALY
Tamura, O.; National Metrology Institut of Japan, Advanced Industrial Science and Technology (NMIJ/ AIST), Tsukuba, JAPAN
White, Rod; Measurement Standards Laboratory of New Zealand (MSL), Lower Hutt, NEW ZEALAND
|
| Quelle/Jahr | TEMPMEKO & ISHM 2010 special issue. International Journal of Thermophysics: 31 (2010), 8/9, 1795 - 1808 |
| Herausgeber(in) |
Fischer, Joachim; 7.4, Temperatur, PTB-Berlin
Lovell-Smith, J.; Measurement Standards Laboratory of New Zealand, NEW ZEALAND
|
| ISSN | 0195-928X (PRINT) ; 1572-9567 (ONLINE) |
| DOI | |
| Verlag | Dordrecht: Springer |
| Konferenzangaben | TEMPMEKO & ISHM 2010, Portoroz, 31 May - 04 June, 2010, Slovenia |
| Zusammenfassung | Motivated by the need for a formal document to give definitive guidance for the practical realization of the kelvin in accordance with the International System of Units (SI), the Consultative Committee for Thermometry (CCT) created the mise en pratique for the definition of the kelvin (MeP-K) in 2006. Subsequently, the CCT considered constructing a new International Temperature Scale (ITS) to replace the present ITS-90 and its low-temperature counterpart, the Provisional Low Temperature Scale (PLTS-2000). However, the CCT decided not to do this because a new temperature scale imposes large burdens on industry, which has a large installed base of hardware and process algorithms specific to the ITS-90. Instead, the adoption of the MeP-K opens a new and flexible path for updating and expanding the thermometric methods in common use without changing the basis of the ITS-90. Additionally, the CCT foresaw that adoption of the proposed new definition of the kelvin, based on a fixed value for the Boltzmann constant, would require an MeP-K. Future versions of the MeP-K, updating the 2006 version, will cover the following: 1. An Introduction will outline the definition of the kelvin and its extension to primary realizations and the ITS. 2. The MeP-K will describe direct, primary methods for measuring thermodynamic temperature T. In particular, absolute radiometric methods above the silver point have lower uncertainties than ITS-90 methods. 3. The ITS-90 and PLTS-2000 provide formal approximations to T. The MeP-K currently includes the text of the scales and a Technical Annex of essential additional information. Future versions will include recommended differences between thermodynamic temperature and temperature on the ITS-90, T – T90, along with the associated uncertainty. Documentation of known ITS-90 biases supports thermodynamically accurate measurements without mandating replacement of the ITS-90 in industry. 4. In a new category of SI realizations, the MeP-K will describe realization of the kelvin by indirect methods, giving the temperatures for selected fixed points (not defined on the ITS-90) and outlining interpolation or extrapolation methods. Realizations using high-temperature eutectic fixed points and radiometric interpolation are one example of an indirect method promising greater flexibility in traceable temperature measurements. |
Zitierung
Ripple, C., Davis, R., Fellmuth, B., Fischer, J., Machin, G., Quinn, T., Steur, P., Tamura, O., & White, R. (2010). The roles of the Mise en Pratique.noitalic for the definition of the KELVIN. International Journal of Thermophysics, 31(8/9), 1795–1808. https://doi.org/10.1007/s10765-010-0837-2