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2010•Unpublished venueRequires access

Measurement of mass scaling and alternate materials on the NIST electronic kilogram system

Reto Steiner, D. Haddad, R. Liu, Edwin R. Williams, Stuart Davidson

Open publisher page 1 citations

Abstract

A blind test was conducted with mass references of a 0.5 kg silicon and 1 kg each of steel and gold-plated copper, calibrated in vacuum at the NPL and measured with the watt balance at the National Institute of Standards and Technology (NIST). The results were analyzed against a 1 kg PtIr mass calibrated at NIST. The results showed good and consistent agreement between the Si, steel, and PtIr masses. The Au-plated Cu mass was stable while being measured but may have shifted during the transfer.

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What this paper is about

A blind test was conducted with mass references of a 0.5 kg silicon and 1 kg each of steel and gold-plated copper, calibrated in vacuum at the NPL and measured with the watt balance at the National Institute of Standards and Technology (NIST). The results were analyzed against a 1 kg PtIr mass calibrated at NIST. The results showed good and consistent agreement between the Si, steel, and PtIr masses. The Au-plated Cu mass was stable while being measured but may have shifted during the transfer.

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Available abstract

A blind test was conducted with mass references of a 0.5 kg silicon and 1 kg each of steel and gold-plated copper, calibrated in vacuum at the NPL and measured with the watt balance at the National Institute of Standards and Technology (NIST). The results were analyzed against a 1 kg PtIr mass calibrated at NIST. The results showed good and consistent agreement between the Si, steel, and PtIr masses. The Au-plated Cu mass was stable while being measured but may have shifted during the transfer.

Key concepts: NIST, Kilogram, Calibration, Materials science, Silicon, Metrology, Metallurgy, Copper

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