The Performance of the KIBB-g1 Tabletop Kibble Balance at NIST

TL;DR

This paper reports on the development and performance evaluation of a tabletop Kibble balance (KIBB-g1) at NIST, capable of directly realizing mass at the gram level with high precision and detailed uncertainty analysis.

Contribution

The paper introduces the design, construction, and uncertainty assessment of the KIBB-g1, a novel tabletop Kibble balance for gram-level mass realization.

Findings

Masses of 5g and 1g were measured with uncertainties of 9.0 μg and 6.7 μg.

Relative uncertainties achieved were 1.8×10⁻⁶ and 6.3×10⁻⁶.

Full uncertainty budgets and capabilities are detailed.

Abstract

A tabletop-sized Kibble balance (KIBB-g1) designed to directly realize mass at the gram-level range with uncertainties on the order of parts in 10$^6$ has been developed at the National Institute of Standards and Technology (NIST). The masses of a nominally 5\,g and 1\,g weight were determined with 1-$\sigma$ standard uncertainties of 9.0\,$\upmu$g and 6.7\,$\upmu$g, respectively. The corresponding relative uncertainties are $1.8\times 10^{-6}$ and $6.3\times 10^{-6}$. The construction of the instrument, capabilities, and full uncertainty budgets are presented in this manuscript.