Research on a Watt-Balance Experimental Model Based on a Monolithic Weight-Measuring Converter

This article details the combined efforts made by national metrological institutes for the phased distribution of the mass unit that can be traced to the Planck constant, a fundamental physical constant whose numerical value was fixed at the 26th General Conference on Weights and Measures in Paris on May 20, 2019. This article outlines the necessity of studies to maintain the equivalence of the national standard of the unit of mass to that of other countries since it is also the mandatory condition for international recognition of the measuring capabilities of the metrological institutes of the Russian Federation. Then, the watt balance experimental model, which was created at the D. I. Mendeleyev Institute for Metrology, is presented. The watt-balance model's weight-measuring unit, which employs a monolithic converter and a lower suspension to operate on the principle of electromagnetic power compensation, is explained along with its components and workings. Finally, the article presents the results of studies of the metrological characteristics of the watt-balance model. The studies were conducted using standards traceable to the State primary standard of the mass unit and kilogram GET 3-2020. The results showed the potential possibility of applying the design solutions used in the developed and studied watt-balance model to create a reference unit in the Russian Federation that implements the new definition of the kilogram.