Exchange of Experiences between Inrim and Ipq in the Density Field
نویسندگان
چکیده
Density measurements are frequently associated to specific requirements in order to evaluate the quality of a process or to determine mass and/or volume of the material. Hydrostatic weighing is the usual method to get directly the traceability to the SI system of the density as well as of the solid volume. INRIM (the former CNR IMGC) supplied to IPQ a hydrostatic apparatus with a measuring cell, devoted to measure the density of liquids and the volume (density) of small solid bodies, with technical support and assistance in the density field. Since 2005 the partnership between the two Institutes has been developed within the EUROMET project 858 “Hydrostatic weighing – exchange of experiences”. This paper deals with the activity concerning the main technical and metrological characteristics of the supplied measuring cell and also shows the preliminary results for testing it. For this purpose a comparison was carried out between the two laboratories. Each one determined the volume and consequently the density of the silicon sphere supplied together with the measuring cell. We should note that the comparison was carried out as a part of technology transfer from INRIM to IPQ. Thus the comparison results can not be linked to any key or supplementary comparison presented in KCDB.
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