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- W2948291388 abstract "High accuracy air density measurements are needed in calibrations of OIML E1 and E2 class mass standards, becoming more vital when calibrating a secondary stainless steel mass standard from a primary platinum-iridium (Pt-Ir) standard due to the large difference in volume between them. Current state of the art air density measurements using the conventional CIPM-81/91 method can measure air density to about 1 part in 10 to the power of 4 (k = 1). However, gravimetric air density artefacts offer the opportunity to measure moist air density to about 1 part in 10 to the power of 5 (k = 1), which would reduce the uncertainty on stainless steel – Pt-Ir calibrations by up to 50%. The moist air density measurements made using gravimetric artefacts presented in this report have demonstrated excellent agreement with the CIPM-81/91 method and offer an improved uncertainty of 1.1 parts in 10 to the power of 5 (k = 1)." @default.
- W2948291388 created "2019-06-14" @default.
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- W2948291388 date "2007-05-01" @default.
- W2948291388 modified "2023-09-23" @default.
- W2948291388 title "The development of artefacts for the gravimetric measurement of the density of moist air." @default.
- W2948291388 hasPublicationYear "2007" @default.
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