Affordable Access

Access to the full text

The use of ethanol to determine the volume of a pycnometer used to measure the density of liquids at different temperatures and pressures

Authors
  • Santos Junior, J. J. P.1, 2
  • Pereira, R. G.2
  • Rosendahl, M.1, 3, 4
  • Santo Filho, D. M. E.1
  • Gouveia, J. M. G.1
  • 1 National Institute of Metrology Quality and Technology – INMETRO, Duque de Caxias, RJ, Brazil , Duque de Caxias (Brazil)
  • 2 Fluminense Federal University – PGMEC-UFF, Niterói, RJ, Brazil , Niterói (Brazil)
  • 3 Estácio de Sá University – UNESA, Rio de Janeiro, Brazil , Rio de Janeiro (Brazil)
  • 4 State University of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil , Rio de Janeiro (Brazil)
Type
Published Article
Journal
Journal of the Brazilian Society of Mechanical Sciences and Engineering
Publisher
Springer Berlin Heidelberg
Publication Date
Dec 16, 2019
Volume
42
Issue
1
Identifiers
DOI: 10.1007/s40430-019-2107-y
Source
Springer Nature
Keywords
License
Yellow

Abstract

Steel pycnometers are used to determine density of liquids and gases at different temperatures and pressures. In order to determine this density with reliability, it is necessary to define the mass and the volume of this artifact with the best possible accuracy. This work proposes a methodology for calibrating this artifact, using the gravimetric method, in the pressure range from 1 bar (0.1 MPa) up to 96 bar (9.6 MPa), at the temperature of 20 °C, using Ethanol Pa (with 95% purity in volume). The results of uncertainty of volume for ambient conditions are shown here. The pycnometer volume equation was developed in the pressure range of 1 bar (0.1 MPa) up to 96 bar (9.6 MPa) for the temperature of 20 °C, whose uncertainty found was 0.055 cm3 (0.006%).

Report this publication

Statistics

Seen <100 times