KFU. Card publication. Measurements of density at elevated pressure - A vibrating-tube densimeter calibration, uncertainty assessment, and validation of the results

- RUS
- 中文
- ES

MEASUREMENTS OF DENSITY AT ELEVATED PRESSURE - A VIBRATING-TUBE DENSIMETER CALIBRATION, UNCERTAINTY ASSESSMENT, AND VALIDATION OF THE RESULTS

Form of presentation

Articles in international journals and collections

Year of publication

2021

��

��

Authors, employees of KFU

Akhmadiyarov Aydar Anfisovich, author

Petrov Artem Aleksandrovich, author

Rakipov Ilnaz Tagirovich, author

Bibliographic description in the original language

Akhmadiyarov A.A, Marczak W, Petrov A.A, Rakipov I.T Measurements of density at elevated pressure - A vibrating-tube densimeter calibration, uncertainty assessment, and validation of the results//Journal of Molecular Liquids. - 2021. - Vol.336, Is.. - Art. � 116196.

Annotation

The reported study dealt with a test of the Anton Paar DMA 4200 M densimeter for the measurements at elevated pressures. The densimeter was calibrated with water and toluene as standard liquids at pressures from 0.1 to 50 MPa and temperatures from 293.15 to 453.15 K. A fitted calibration equation with 14 adjustable coefficients proved to be suitable for the whole range of pressure and temperature. Two liquids with known densities, n-heptane and acetonitrile, were used in the validation procedure that consisted in the measurements of the densities, fitting Tait-type equations of state, and comparing the obtained results with the densities reported in 50 literature sources. The uncertainty of density, ?0.2 kg?m−3, was assessed from the results obtained for the most unfavourable combination of pressure and temperature. It was equal to the value declared by the densimeter manufacturer for the measurements at atmospheric pressure. The biggest contribution in the combined uncertainty of density was that due to the temperature measurement error.

Keywords

�� , �� , �� , equation of state; high pressure density; measurement uncertainty

The name of the journal

Journal of Molecular Liquids

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107829038&doi=10.1016%2fj.molliq.2021.116196&partnerID=40&md5=2546c29951aad746459a924e144f1ce2

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=254397&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Akhmadiyarov Aydar Anfisovich	ru_RU
dc.contributor.author	Petrov Artem Aleksandrovich	ru_RU
dc.contributor.author	Rakipov Ilnaz Tagirovich	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Akhmadiyarov A.A, Marczak W, Petrov A.A, Rakipov I.T Measurements of density at elevated pressure - A vibrating-tube densimeter calibration, uncertainty assessment, and validation of the results//Journal of Molecular Liquids. - 2021. - Vol.336, Is.. - Art. � 116196.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=254397&p_lang=2	ru_RU
dc.description.abstract	Journal of Molecular Liquids	ru_RU
dc.description.abstract	The reported study dealt with a test of the Anton Paar DMA 4200 M densimeter for the measurements at elevated pressures. The densimeter was calibrated with water and toluene as standard liquids at pressures from 0.1 to 50 MPa and temperatures from 293.15 to 453.15 K. A fitted calibration equation with 14 adjustable coefficients proved to be suitable for the whole range of pressure and temperature. Two liquids with known densities, n-heptane and acetonitrile, were used in the validation procedure that consisted in the measurements of the densities, fitting Tait-type equations of state, and comparing the obtained results with the densities reported in 50 literature sources. The uncertainty of density, ?0.2 kg?m−3, was assessed from the results obtained for the most unfavourable combination of pressure and temperature. It was equal to the value declared by the densimeter manufacturer for the measurements at atmospheric pressure. The biggest contribution in the combined uncertainty of density was that due to the temperature measurement error.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	��	ru_RU
dc.subject	��	ru_RU
dc.subject	��	ru_RU
dc.subject	equation of state; high pressure density; measurement uncertainty	ru_RU
dc.title	Measurements of density at elevated pressure - A vibrating-tube densimeter calibration, uncertainty assessment, and validation of the results	ru_RU
dc.type	Articles in international journals and collections	ru_RU