An indirect determination of the thermodynamic temperature of the fixed point of copper was made at INRIM by measuring four cells with a Si-based and an InGaAs-based precision radiation thermometer carrying approximated thermodynamic scales realized up to the Ag point. An average value TCu = 1357.840 K was found with a standard uncertainty of 0.047 K. A consequent (T − T90)Cu value of 70 mK can be derived which is 18 mK higher than, but consistent with, the presently available (T − T90)Cu as elaborated by the CCT-WG4.
Indirect determination of the thermodynamic temperature of the copper point by a multi-fixed-point technique / Battuello, Mauro; Florio, M; Girard, Ferruccio. - In: METROLOGIA. - ISSN 0026-1394. - 47:(2010), pp. 231-238. [10.1088/0026-1394/47/3/013]
Indirect determination of the thermodynamic temperature of the copper point by a multi-fixed-point technique
BATTUELLO, MAURO;GIRARD, FERRUCCIO
2010
Abstract
An indirect determination of the thermodynamic temperature of the fixed point of copper was made at INRIM by measuring four cells with a Si-based and an InGaAs-based precision radiation thermometer carrying approximated thermodynamic scales realized up to the Ag point. An average value TCu = 1357.840 K was found with a standard uncertainty of 0.047 K. A consequent (T − T90)Cu value of 70 mK can be derived which is 18 mK higher than, but consistent with, the presently available (T − T90)Cu as elaborated by the CCT-WG4.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
