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Fast electromagnetic balance

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Abstract

Instead of reading the equilibrium value, the deflection of the balance as a function time can be measured and the equation of motion \(T = J\ddot \alpha + k\dot \alpha + C\alpha \) can be used to calculate the unknown torque T and to relate the other quantities in the equation to the actual instrument-constants. In this way, balance reading could be much faster and weighing errors due to faulty instrument and environmental influences can be smaller than those in equilibrium position. This enables the use of microbalances for the observation of fast chemical or thermal processes and to use it as fast checkweigher for control of sorting machines. In the present paper we present results from calculations of a simulation procedure.

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References

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Authors and Affiliations

  1. Faculty of Technical Physics, Technical University Eindhoven, P.O. Box 513, NL-5600, MB, Eindhoven, The Netherlands

    C. H. Massen & J. A. Poulis

  2. Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099, Mainz, Germany

    E. Robens

  3. C. I. Electronics Ltd, Brunel Rd, Churchfields Salisbury, Wiltshire, SP2 7PX, England, UK

    R. Roverato

Authors
  1. C. H. Massen
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  2. J. A. Poulis
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  3. E. Robens
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  4. R. Roverato
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Correspondence to C. H. Massen.

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Massen, C.H., Poulis, J.A., Robens, E. et al. Fast electromagnetic balance. Journal of Thermal Analysis and Calorimetry 71, 47–51 (2003). https://doi.org/10.1023/A:1022297629644

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  • DOI: https://doi.org/10.1023/A:1022297629644

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