STUDY OF SOME METAL FIXED POINTS FROM DIFFERENT SOURCES

M. G. Ahmed, K. Ali

Abstract

A comparison of some defining temperature fixed-points on the ITS-90 was carried out at the National Institute of Standards using four calibrated SPRTs. The comparison was performed using large and small sealed cells from two different sources. The large cells, namely set1 cells and taken as reference cells were realized using the same technique used with the small cells (set2). The main task is to study the set2 cells and the possibility of using them instead of the large size (reference) cells. Measurements showed good results and some agreement between the two sets. The differences between the set2 cells and reference cells set1 were well within 2 mK.

Keywords

ITS-90, SPRT, Fixed-Point

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PWC-2006-TC12-025u.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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