| Zugriffsnummer | 34856 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | An approach to synchronise effective areas of pressure balances |
| Autor(in); Institution |
Sabuga, Wladimir; 3.3, Thermophysikalische Größen, PTB-Braunschweig
Priruenrom, Tasanee; 3.3, Thermophysikalische Größen, PTB-Braunschweig
|
| Quelle/Jahr | MAPAN - Journal of Metrology Society of India: 30 (2014), 1, 7 - 13 |
| ISSN | 0970-3950 (PRINT) ; 0974-9853 (ONLINE) |
| DOI | |
| URL | |
| Verlag | New Delhi: Springer India |
| Zusammenfassung | A method to synchronise effective areas of pressure balances is presented. By this method, the effective areas of piston-cylinder assemblies (PCAs) with their uncertainties determined from dimensional characteristics of the piston and the cylinder or from a calibration against reference pressure standards can be adjusted to achieve an optimal agreement with the effective area ratios determined by cross-float measurements between the PCAs. The approach is based on the weighted least squares’ method and leads to minimum discrepancies between the initial effective areas and the cross-float area ratios on one side, and the synchronised effective areas on the other side. Examples of the new method’s application to five gas-operated PCAs and five oil-operated PCAs of PTB, and to five gas-operated PCAs of NIMT, which are used as primary pressure standards in the two institutes, are presented. |
