COMPARISON BETWEEN THE NATIONAL PROTOTYPE OF THE KILOGRAM AND STAINLESS STEEL MASS STANDARDS

Adriana Vâlcu
Abstract:
In 2013, the National Prototype of the Kilogram (NPK) No.2 belonging to Romania, together with stainless steel kilogram standard Ni81, received an updated mass value from BIPM. Therefore, the first task after their receiving from BIPM was to perform comparisons between NPK and reference kilograms stainless steel standards. In the paper are described mass standards, weighing scheme used for comparisons, calculations of mass and associated uncertainties, as the mass change for all weights involved. It is also presented a comparison between Romanian CMC(s) and other countries for this important stage of dissemination of mass unit.
Keywords:
national prototype of the kilogram, reference mass standards, weighing scheme, check standard
Download:
IMEKO-WC-2015-TC21-420.pdf
DOI:
-
Event details
Event name:
XXI IMEKO World Congress
Title:

Measurement in Research and Industry

Place:
Prague, CZECH REPUBLIC
Time:
30 August 2015 - 04 September 2015
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