REALIZATION OF NEW MERCURY TRIPLE POINT CELLS AT TUBITAK-UME

Murat Kalemci, Ahmet T. Ince, Georges Bonnier

Abstract

The triple point of mercury is one of the defining fixed-points of the International Temperature Scale of 1990 (ITS-90). Its value was assigned to be 231.3456 K (-38.8344°C) by ITS-90 and has an unique importance since it is the only fixed-point suggested by ITS-90 between 0.01°C and -190°C. Four mercury cells from borosilicate-glass were constructed at TUBITAK-UME Temperature laboratory. The details of construction phase then the measurement and comparison results with the reference UME cell will be given in this paper.

Keywords

mercury triple point, impurity, uncertainty

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IMEKO-WC-2009-TC12-609.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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