CAPACITIVE CALIBRATION CAPABILITIES IN AN EMFC BALANCE

V. Cherkasova, T. Fröhlich

Abstract

The article describes the possibilities of calibrating the force constant in an electromagnetic force compensation (EMFC) load cell using the electrostatic force compensation principle. The static and dynamic principles of calibration of the Kibble balance for the electrostatic force constant, as well as calibration by means of compensation of the electrostatic force by the electromagnetic force, are considered. The combination of the two compensation principles in the load cell allows the measurement of forces in the range of 20 pN to 2.2 mN and ensures traceability to national standards. The relative uncertainty in the measurement of forces of about 100 nN is estimated to be about 0.001.

Keywords

load cell; electromagnetic force compensation; electrostatic force compensation; calibration

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IMEKO-TC3-2022-111.pdf

DOI

10.21014/tc3-2022.111

IMEKO TC

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

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