The results are presented of the key comparison EURAMET 1031 (EURAMET.M.D-K1.1) that covered the measurements of density and volume of silicon spheres of three different masses at 20 °C and 101325 Pa. The volume and density determinations of 15 national metrology institutes (NMIs) were checked and linked to the CCM.D-K1 key comparison. The measurements were carried out near 20 °C and at atmospheric pressure by the hydrostatic method in the time interval from 16 May 2008 to 18 Jan 2011. The comparison was performed in two petals with three spheres in each petal. The travelling standards of petal 1 have a mass of 1001 g, 200 g and 35 g (Petal 2: 984 g, 239 g, 35 g). Whereas the reference values of the 1 kg travelling standards could be determined by the link to the CCM.D-K1 comparison, the density reference values for the smaller spheres were determined by density comparison to the 1 kg spheres using the pressure-of-flotation method. One result was wrong due to a mis...

中文翻译：

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EURAMET键比较1031（EURAMET.MD-K1.1）—固体密度比较

给出了关键比较EURAMET 1031（EURAMET.MD-K1.1）的结果，该比较涵盖了在20°C和101325 Pa下三种不同质量的硅球的密度和体积的测量结果。15个国家/地区的体积和密度测定检查了计量机构（NMI），并将其链接到CCM.D-K1密钥比较。在2008年5月16日至2011年1月18日的时间间隔内，通过静水压法在20°C附近和大气压下进行测量。比较是在两个花瓣中进行的，每个花瓣中有三个球体。花瓣1的移动标准质量为1001 g，200 g和35 g（花瓣2：984 g，239 g，35 g）。可以通过CCM.D-K1比较的链接来确定1千克行进标准的参考值，较小的球体的密度参考值是使用浮选法通过与1 kg球体进行密度比较来确定的。一个结果是由于错误...