Abstract
The Istituto di Metrologia "G. Colonnetti" (IMGC, Italy), the
Laboratoire National d'Essais (LNE, France) and the Mittatekniikan
Keskus (MIKES, Finland) support primary calibration facilities used both
for liquid density measurements and for hydrometer calibrations. In
1998, two independent bilateral comparisons of the calibration of
standard hydrometers were carried out between the IMGC and the LNE and
between the IMGC and the MIKES, the main purpose being to assess the
present state of mutual compatibility in the density range 600 kg/m3 to 2000 kg/m3
among the three laboratories. The results show agreement within the
uncertainties declared by the laboratories, although the MIKES
measurements are in general 0.2 kg/m3 lower than those of the IMGC and the LNE measurements are systematically 0.04 kg/m3
higher than those of the IMGC. Both differences are smaller than half
of the least-scale division of the transfer hydrometer used.
Original language | English |
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Pages (from-to) | 141-147 |
Journal | Metrologia |
Volume | 37 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2000 |
MoE publication type | A1 Journal article-refereed |