Accession Number : AD0692224

Title :   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,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED PHYSICS

Personal Author(s) : Bedford,R. E. ; Durieux,M. ; Muijlwijk,R. ; Barber,C. R.

Report Date : 19 FEB 1969

Pagination or Media Count : 3

Abstract : 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)

Descriptors :   (*TEMPERATURE, STANDARDS), MEASUREMENT, RESISTANCE THERMOMETERS, PLATINUM, CRYOGENICS, CANADA

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE