Title :
Comparison of three methods to determine the density of moist air
Author :
Picard, A. ; Fang, H.
Author_Institution :
Bur. Int. des Poids et Mesures, Sevres, France
Abstract :
Determines the density of air by using the following three methods: CIPM-81/91 formula, air buoyancy artefacts and an optical method. A discrepancy of 10/sup -4/ kg/spl middot/m/sup -3/ was observed between the two absolute methods: the CIPM-81/91 formula and the buoyancy artefacts. Future investigations are underway to clarify this difference.
Keywords :
constants; density; mass measurement; measurement standards; measurement uncertainty; units (measurement); CIPM-81/91 formula; air buoyancy artefacts; constant determination; density; kilogram definition; mass standards; moist air; optical method; relative uncertainty; Copper; Density measurement; Equations; Gold; Optical refraction; Platinum; Silicon; Temperature; Testing; Uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034847
