Τίτλος:	Volumetric and gravimetric calibration of a 20 L proving tank
Χρονολογία:	2011-09
Εξειδίκευση τύπου:	Έκθεση-Αναφορά
Δημιουργός:	Cignolo, Giorgio Malengo, Andrea
Γλώσσα:	Αγγλικά
Κάτοχος πνευματικών δικαιωμάτων:	EURAMET
Άδεια Χρήσης:	Σήμα Δημοσίου Τομέα
Περίληψη:	The Volume Subgroup of the EURAMET TC “FLOW” carried out EURAMET Project 1079, a comparison of the results obtained by 15 European National Measurement Institutes that agreed to calibrate with water a 20 litre-capacity stainless-steel proving tank of the type commonly used to extensively check, both in laboratory and in the field, the correct measurement and delivery of given amounts of water as well as (especially for custody transfer purposes) of liquids other than water. At nine laboratories, among the participants, the most accurate method of calibration, implemented by weighing the contents of water at known temperature and density, was coupled to the more common method of calibration by water transfers from standard vessels of higher accuracy. Indeed, the Project was essentially aimed at comparing results and accuracy of the latter method to those of the former, which is considered as a primary method, already tested in several international comparisons. During the Project, launched in 2008 and closed in 2011, the proving tank underwent a large decrease in its capacity soon after the middle point of its circulation among participants; the possible (so far unknown) causes of this instability are discussed. The volume change of the proving tank made it difficult to draw generally valid conclusions; therefore, it should be advisable to repeat the comparison, or part of it, in the next years using an intrinsically more stable transfer standard.
Θέμα:	Άλλες Επιστήμες Μηχανικού και Τεχνολογίας
Λέξεις κλειδιά:	Volumetric calibration gravimetric calibration comparison of a 20 L proving tank
Εκπαιδευτικό επίπεδο:	AEI TEI Πρόγραμμα Μεταπτυχιακών Σπουδών Πρόγραμμα Διδακτορικών Σπουδών
Τόπος δημιουργίας:	Italy
Διάθεση πλήρους ψηφιακού τεκμηρίου:	Πλήρης
Εμφανίζεται στις συλλογές:	Κείμενο 1.3 Μετρήσεις σε συνεργασία με άλλα εθνικά μετρολογικά εργαστήρια