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Bilateral comparisons of hydrometer calibrations between the IMGC-LNE and the IMGC-MIKES

机译:IMGC-LNE和IMGC-MIKES之间的比重计校准的双边比较

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摘要

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/m~(3) to 2000 kg/m~(3) 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/m~(3) lower than those of the IMGC and the LNE measurements are systematically 0.04 kg/m~(3) higher than those of the IMGC. Both differences are smaller than half of the least-scale division of the transfer hydrometer used.
机译:Metrologia“ G。Colonnetti”研究所(意大利IMGC),Essais国家实验室(法国LNE)和Mittatekniikan Keskus(芬兰MIKES)支持用于液体密度测量和比重计校准的主要校准设备。 1998年,在IMGC和LNE之间以及IMGC和MIKES之间进行了两次标准比重计校准的独立双边比较,主要目的是评估600 kg / m密度范围内的相互兼容性的现状。三个实验室中的〜(3)至2000 kg / m〜(3)。结果表明,在实验室宣布的不确定性范围内是一致的,尽管MIKES测量值通常比IMGC测量值低0.2 kg / m〜(3),而LNE测量值系统地比IMGC测量值高0.04 kg / m〜(3)。 IMGC。两种差异均小于所使用的传输比重计最小刻度的一半。

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