A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7mol% in the temperature range from 233K to 313K at pressure lower than 10MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16kgm−3 (0.02%) in the temperature range from 253K to 313K and lower than 0.07% between 233K and 243K over the whole pressure range tested.
Original pycnometers for volatile liquid density over wide ranges of temperature and pressure: practical example / Lorefice, Salvatore; Romeo, R; Santiano, M; Capelli, A.. - In: METROLOGIA. - ISSN 0026-1394. - 51:(2014), pp. 154-160. [10.1088/0026-1394/51/3/154]
Original pycnometers for volatile liquid density over wide ranges of temperature and pressure: practical example
LOREFICE, SALVATORE;Romeo R;Santiano M;
2014
Abstract
A novel kind of pycnometer was designed for liquid density measurements suitable to be used over wide ranges of temperature and pressure. Two similar pycnometers have been manufactured and tested with n-nonane 99.7mol% in the temperature range from 233K to 313K at pressure lower than 10MPa. To validate the procedure, the experimental values of density of an n-nonane sample have been compared with the density values given in the literature by means of the En number. The density uncertainty of n-nonane is found to be 0.16kgm−3 (0.02%) in the temperature range from 253K to 313K and lower than 0.07% between 233K and 243K over the whole pressure range tested.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
