A Proposal for a Practical Temperature Scale between 1 K and 273 K
R C Kemp; L M Besley; W R G Kemp; R C Kemp; National Measurement Laboratory, CSIRO, Sydney, Australia 2070; L M Besley; National Measurement Laboratory, CSIRO, Sydney, Australia 2070; W R G Kemp; National Measurement Laboratory, CSIRO, Sydney, Australia 2070
Журнал:
Metrologia
Дата:
1978-10-01
Аннотация:
A combination of the two current practical scales of temperature (EPT-76 and IPTS-68) in the range 1 K to 83 K has been shown to produce a scale which is irregular with respect to the most recent thermodynamic data. We suggest an alternative practical scale, T<sub>77,NML</sub>, which covers the range 1 to 273.16 K and is based on the best available thermodynamic data below 83 K and on the present IPTS-68 above 83 K. T<sub>77,NML</sub> provides a means of calibrating resistance thermometers in this range in a manner superior in accuracy, thermodynamic smoothness and ease of use to that provided by the current practical scales of temperature. Certain inconsistencies between T<sub>77,NML</sub> and IPTS-68 suggest that there should be a redetermination of the thermodynamic temperature of the triple point of oxygen.
524.2Кб