After several years of development and continuous improvement of the BIPM Kibble balance, mass measurement of a 1 kg Pt/Ir artefact in terms of the Planck constant has been carried out. The paper describes the apparatus and its alignment, and explains the measurement and data processing. The balance operates in a one-mode and two measurement phase scheme using a bifilar coil. The mass value of the artefact was measured in vacuum with a relative standard uncertainty of 49 µg. This value differs from the value deduced from the calibration following the dissemination process after the redefinition of the kilogram by 15 µg.

中文翻译：

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BIPM Kibble天平，用于实现公斤定义

经过几年的发展和BIPM球状天平的不断改进，已经对按普朗克常数计的1 kg Pt / Ir伪像进行了质量测量。本文介绍了仪器及其校准，并说明了测量和数据处理。天平使用双股线圈以一种模式和两种测量阶段的方式工作。假象的质量值是在真空中测量的，相对标准不确定度为49 µg。该值与在重新定义千克后，在传播过程中通过校准得出的值不同，为15 µg。