Validation of a vibrating-wire viscometer: measurements in the range of 0.5 to 135 mPa's

Oliveira, Carla Padrel de; Caetano, Fernando J. P.; Fareleira, João M. N. A.; Wakeham, William A.

http://hdl.handle.net/10400.2/2039

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Authors

Oliveira, Carla Padrel de

Caetano, Fernando J. P.

Fareleira, João M. N. A.

Wakeham, William A.

Abstract(s)

The present article describes a novel vibrating-wire viscometer that has been shown to be able to measure viscosities up to 135 mPaâs, after calibration against water at 20 °C, to provide direct traceability to the primary reference for viscosity. For the purpose of validating the instrument, measurements of the viscosity of some selected fluids, including standard reference liquids with viscosity on the order of 100 mPaâs at 20 °C and 2,2,4-trimethylpentane with a viscosity of about 0.5 mPaâs at the same temperature, were performed. The results obtained show that the instrument is capable of performing viscosity measurements with an estimated overall uncertainty better than (0.8% over the range of (0.5 to 135) mPa's.

Keywords

Vibrating-wire viscometer Viscosity measurements Standard reference liquids

URI

http://hdl.handle.net/10400.2/2039

Citation

Oliveira, Carla Padrel de [et al.] - Validation of a vibrating-wire viscometer: measurements in the range of 0.5 to 135 mPa's. "Journal of Chemical & Engineering Data" [Em linha]. ISSN 0021-9568 (Print) 1520-5134 (Online). Vol. 50, nº 1 (2005), p. 201-205