Michael Gramß, Christian Karcher
A Lorentz force flowmeter is a contact-free device for measuring flow rates in electrically conducting fluids like high-temperature metal melts. The main goal of this work is to develop an overall calibration procedure for Lorentz force flowmeter (LFF) prototypes that shall be used in the production line of secondary aluminum. The calibration is divided into two parts: dry calibration and wet calibration. Dry calibration aims to model turbulent free-surface liquid aluminum flow by the laboratory-controlled movement of a solid bar with well-defined geometries, while wet calibration simulates liquid aluminum flow using lower melting liquid tin flowing through a reference channel. The setup facilitates investigation of special flow situations encountered in application. The results showed an estimated measurement uncertainty of about 3% for the generated Lorentz force at varying bar speeds from 3 cm/s to 20 cm/s. Although this setup provides a gold standard due to its traceability to national mass standards, it does not address all necessary details for a comprehensive calibration applicable in the aluminum industry.
@article{b10b6bc0-067a-4f54-9616-2d990f86f5f6,
title={Calibration of the Lorentz force flowmet},
author={Michael Gramß and Christian Karcher},
year={2026},
language={en}
}TY - JOUR TI - Calibration of the Lorentz force flowmet AU - Michael Gramß AU - Christian Karcher PY - 2026 LA - en ER -
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