Bilateral comparison of buoyancy artefacts between PTB and KRISS

Chung, Jin Wan; Borys, Michael; Firlus, Martin; Lee, W.G.; Schwartz, Roman

doi:10.1016/j.measurement.2006.08.003

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Vacuum Weighing1

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2009

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Cited by 2 publications

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References 9 publications

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“…Using modern vacuum mass comparators, the mass difference between two buoyancy artefacts with a nominal value of 1 kg can be determined under vacuum with an uncertainty of less than 3 µg. Depending on the volume difference between the artefacts, this value corresponds to a relative contribution to the uncertainty of the air density of less than 3 × 10 −5 (Picard and Fang 2002, Chung et al 2005, Picard 2006a, 2006b, Madec et al 2007.…”

Section: Vacuum Weighingmentioning

confidence: 99%

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Precision mass measurements

Gläser¹,

Borys²

2009

Rep. Prog. Phys.

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Mass as a physical quantity and its measurement are described. After some historical remarks, a short summary of the concept of mass in classical and modern physics is given. Principles and methods of mass measurements, for example as energy measurement or as measurement of weight forces and forces caused by acceleration, are discussed. Precision mass measurement by comparing mass standards using balances is described in detail. Measurement of atomic masses related to 12 C is briefly reviewed as well as experiments and recent discussions for a future new definition of the kilogram, the SI unit of mass.

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Section: Vacuum Weighingmentioning

confidence: 99%

“….14) With this gravimetric method it is possible to obtain relative uncertainties of u(ρ a )/ρ a 3 × 10 −5(Picard and Fang 2002, Chung et al 2005, Picard 2006a, 2006b, Madec et al 2007.…”

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confidence: 99%