| Zugriffsnummer | 12932 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Change of the apparent mass of weights arising from temperature differences |
| Autor(in); Institution |
Gläser, Michael; 1.11, Masse, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 36 (1999), 3, 183 - 197 |
| ISSN | 0026-1394 |
| Verlag | Sèvres: BIPM |
| Freie Schlagworte | mass determination ; convection |
| Zusammenfassung | Thermal accommodation of 1 kg and 50 kg weights to ambient air under different storing conditions and change of apparent mass due to temperature differences between weight and air have been measured. Physical models taking account of different heat transfer processes and of convective forces of flowing air acting on the weight have been developed for describing the measurement results. Finally, the models are used to extrapolate the results and predict the change of apparent mass and waiting times for given residual deviations of apparent mass and residual temperature differences also for weights of similar shape but other nominal values. |
