M T Clarkson et al 2001 Metrologia 38 17 doi:10.1088/0026-1394/38/1/3
M T Clarkson, R S Davis, C M Sutton and J Coarasa
Show affiliationsA method is described to determine the volume of a mass standard from weighings made in air of differing density against a reference volume artefact. Standard uncertainties in volume of 2 parts in 105 (at 1 kg) or better are readily achievable with this method, using adequate measuring facilities. The advantages of the method are that volume determination and mass calibration may be carried out simultaneously and that the mass standard is subjected to a variation in air density of only ±5 % or less, compared with conventional hydrostatic weighing methods where the mass standard is immersed in water. Examples are presented of the use of the method for confirming values assigned to mass standards and for full volume determination, together with uncertainty calculations.
06.20.Dk Measurement and error theory
51.90.+r Other topics in the physics of gases (restricted to new topics in section 51)
Issue 1 (February 2001)
M T Clarkson et al 2001 Metrologia 38 17
P W Martin 2001 Metrologia 38 377
A Picard and H Fang 2002 Metrologia 39 31
V I Sapritsky 1995 Metrologia 32 411
K Rasmussen 1999 Metrologia 36 265
A Lassila et al 2000 Metrologia 37 701
M J T Milton and R I Wielgosz 2000 Metrologia 37 199