Automatic Testing Facility for Determining the Density of Liquids And Solids; and Determining the Volume of E1 Weights

  1. French College of Metrology
  1. Christian Buchner

Published Online: 3 FEB 2010

DOI: 10.1002/9780470611371.ch61

Transverse Disciplines in Metrology

Transverse Disciplines in Metrology

How to Cite

French College of Metrology (2009) Automatic Testing Facility for Determining the Density of Liquids And Solids; and Determining the Volume of E1 Weights, in Transverse Disciplines in Metrology, ISTE, London, UK. doi: 10.1002/9780470611371.ch61

Author Information

  1. BEV- Bundesamt für Eich- und Vermessungswesen, (Federal Office of Metrology and Surveying), Austria

Publication History

  1. Published Online: 3 FEB 2010
  2. Published Print: 1 JAN 2009

ISBN Information

Print ISBN: 9781848210486

Online ISBN: 9780470611371

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Keywords:

  • volume comparator;
  • initial situation;
  • fundamental aperture;
  • thermostatized;
  • isolated case

Summary

Fundamental aperture for density determination:

The Austrian Federal Office of Metrology and Surveying (BEV) has developed, in cooperation with Sartorius AG in Goettingen and the Vienna University of Technology, a test system for hydrostatic weighing and determining the density of liquids and solids, whereby mass comparators are automatically loaded alternately with weights and submerged plummets. With the load alternator for weights and plummets, the density of a liquid on one side and the density of a submerged solid (and therefore its volume) on the other side can be determined hydrostatically via direct comparison with standard plummets and the applied substitution weights.

Volume comparator:

To determine consecutively the volume of E1 weights and plummets, additional a fully automatic handling system for a 1 kg mass comparator, a volume comparator was developed. Thus, the hydrostatic weighing principle can be applied for serial volume determination on masses from 1 g to 1 kg by direct comparison with a single volume reference (e.g. a silicon sphere). This principle is implemented with a newly developed, fully automatic insertion mechanism for both completely submerged weights and substitution weights.

Both systems are used for the dissemination of density and volume by BEV as well as for testing and calibrating of liquids and plummets and determining the volume of weights in connection with the determination of mass scale.

The volume comparator is also used in other metrology institutes and in accredited calibration laboratories.