| Zugriffsnummer | 42150 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Selection and characterization of liquids for a low pressure interferometric liquid column manometer |
| Autor(in); Institution |
Ehlers, Sven; 3.3, Physikalische Chemie, PTB-Braunschweig
Könemann, Jens; 3.3, Physikalische Chemie, PTB-Braunschweig
Ott, Oliver; 3.3, Physikalische Chemie, PTB-Braunschweig
Wolf, Henning; 3.3, Physikalische Chemie, PTB-Braunschweig
Setina, Janez; Institute of Metals and Technology (IMT), Ljubljana, SLOVENIA
Furtado, Andreia; Instituto Portugues da Qualidade (IPQ), Caprica, PORTUGAL
Sabuga, Wladimir; 3.3, Physikalische Chemie, PTB-Braunschweig
|
| Quelle/Jahr | Measurement: 132 (2019), 191 - 198 |
| ISSN | 0263-2241 (PRINT) ; 1873-412X (ONLINE) |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Konferenzangaben | 6th CCM International Conference on Pressure and Vacuum Metrology, 5th IMEKO TC16 International Conference, Pereira, 7-10, Mai, 2017, Colombia |
| Freie Schlagworte | primary pressure standard ; low pressure ; liquid column manometer ; vacuum oil ; gas saturation |
| Zusammenfassung | At PTB, the development of a new primary interferometric liquid column manometer for measurement of absolute and gauge pressures in the range up to 2 kPa is an ongoing project. For measurements in this pressure range, liquids with a low density are advantageous because of a better pressure resolution determined through differential column height measurements. In addition, low vapor pressure is a precondition for an accurate measurement of absolute pressure. The choice of liquid is crucial for the accuracy of the new instrument. This paper discusses the effect of liquid properties such as vapor pressure, density, viscosity, surface tension and gas absorption capacity on the performance of the micromanometer. Seven liquids - all oils used in vacuum applications (vacuum oils) - representing different classes of chemical compounds were analyzed in respect to their viscosity, density, thermal expansion and compressibility. Detailed investigations were performed on three liquids out of seven to determine their density versus gas saturation, ab- and desorption kinetics and surface tension, as well as the wettability of the micromanometer’s materials. Results of the measurements and recommendations for the use of the liquids are presented. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Masse und abgeleitete Größen |
| Forschungsprojekt | 14IND06: pres2vac: Industrial standards in the intermediate pressure-to-vacuum range |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2014 Industry Titel der Förderung: 14IND06: pres2vac: Industrial standards in the intermediate pressure-to-vacuum range Förderungsnummer: 14IND06 URI der Förderung: http://pres2vac.eu |
Zitierung
Ehlers, S., Könemann, J., Ott, O., Wolf, H., Setina, J., Furtado, A., & Sabuga, W. (2019). Selection and characterization of liquids for a low pressure interferometric liquid column manometer. Measurement, 132, 191–198. https://doi.org/10.1016/j.measurement.2018.09.017