Refine
Has Fulltext
- no (14)
Document Type
- Conference Proceeding (8)
- Article (6)
Language
- English (14)
Institute
Thermodynamic Temperature determination of Co-C, Pd-C, Pt-C, and Ru-C eutectic fixed point cells
(2005)
A concerted international project to establish hig-temperature fixed-points for primary thermometry
(2007)
A concerted international project to establish high-temperature fixed-points for primary thermometry
(2007)
Thermodynamic temperature determinations of Co-C, Pd-C Pt-C and Ru-C eutectic fixed-points cells
(2006)
A comparison of high temperature fixed-points of Pt-C and Re-C constructed by BIPM, NMIJ and NPL
(2005)
In the proposed scheme temperatures are defined by interpolation and extrapolation with respect to two reference fixed points (n=2), with assigned temperatures. The definition includes one full‐range and two sub‐ranges in temperature. The scheme in question will be compared with two alternatives referred to (1) as n=1, using one reference point only, as in the ITS‐90, and (2) as n=0, involving direct measurement of the thermodynamic temperature by means of absolute radiometry.
The “Mise en pratique for the definition of the kelvin” (MeP-K) was established in April 2006 to be the repository of information required to perform a “practical measurement of temperature in accordance with the International System of Units (SI).” This article describes the progress made by the MeP-K HT (High Temperature Task Group) of CCT-WG5 (radiation thermometry) in drawing together the appropriate methods for accessing thermodynamic temperature above the silver point involving direct radiometric measurements on the one hand and indirect extrapolation, interpolation, and least-squares fitting on the other. An examination of the uncertainties and a brief discussion of the advantages and disadvantages of the various approaches are given. A summary of the remaining issues to be resolved concludes the article.