NIST Technical Note

NIST Technical Note
Author:
Publisher:
Total Pages: 206
Release: 1990
Genre: Physical instruments
ISBN:


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Relationships Between the International Practical Temperature Scale of 1968 and the Nbs-55, Npl-61, Prmi-54, and Psu-54 Temperature Scales in the Range from 13.81 to 90.188k

Relationships Between the International Practical Temperature Scale of 1968 and the Nbs-55, Npl-61, Prmi-54, and Psu-54 Temperature Scales in the Range from 13.81 to 90.188k
Author: R. E. Bedford
Publisher:
Total Pages: 3
Release: 1969
Genre:
ISBN:


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In the region 13.81K to 90.188K the IPTS-68 will replace a number of previously used low temperature scales, four of which are NBS-55, NPL-61, PRMI-54, and PSU-54. It is desirable to know the relationships between these scales and the IPTS-68. At the present time these relationships can be determined, though indirectly and somewhat inaccurately, by means of an earlier intercomparison of the scales, their relationships to the CCT-64 table, and estimates of the values of the defining fixed point temperatures of the IPTS-68 on this table. Values of these relationships are presented. (Author).