Addressing Mechanical Design and Construction Issues for a Two Pan Knife-Edge Kibble Balance

James Berry, Jin Wan Chung, Stuart Davidson, Ian Robinson, Jeannie Urquhart

Abstract

New concepts for the operation of the Kibble (watt) balance using common moving and weighing modes have recently been proposed. In order to fully evaluate the advantages and issues arising from such a configuration NPL is constructing a technology demonstrator based on a 5 kg mechanical two-pan knife-edge balance. This paper describes the design and manufacture of the mechanical components for this balance and highlights the issues that need to be addressed for the successful implementation of such an apparatus at the 1 ppm uncertainty level.

Keywords

Kibble balance, mass, kilogram, redefinition, mechanical design

Download

IMEKO-TC3-2017-043.pdf

DOI

-

IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

Back to the proceedings