| Zugriffsnummer |
48940 |
| Dokumenttyp |
Konferenzartikel
|
| Peer Review |
unbekannt |
| Sprache |
Englisch
|
| Titel |
In-situ liquid density measurement for liquid column manometry |
| Autor(in); Institution |
Ehlers, Sven; 3.3, Physikalische Chemie, PTB-Braunschweig
|
| Quelle/Jahr |
IMEKO Proceedings:(2023), 1
- 6
|
| DOI |
|
| URL |
|
| Verlag |
IMEKO
|
| Konferenzangaben |
Joint IMEKO TC3, T5, TC16 and TC22 International Conference, Dubrovnik, 11-13, Oktober, 2022, Kroatien
|
| Freie Schlagworte |
liquid density ; liquid column manometer ; density standard ; hollow sphere ; primary pressure standard |
| Zusammenfassung |
At PTB, an interferometric liquid column manometer for the pressure measurement up to 2 kPa is under development. Its in-situ liquid density measurement is a new approach for those primary pressure standards and makes the use of low-density liquids, low in comparison with the density of mercury, a liquid often used in other standards, possible. Such liquids, here, vacuum oils, offer an excellent sensitivity in length changes against pressure. The liquid density measurement concept is presented, together with the uncertainty estimation. |
