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Design and potential analysis of an eddy current sensor for inductive conductivity measurement in fluids
Citation Link: https://doi.org/10.15480/882.3726
Publikationstyp
Journal Article
Date Issued
2021-05-19
Sprache
English
Author(s)
Harms, Julius
Institut
TORE-DOI
Journal
Volume
6
Issue
1
Article Number
54
Citation
Engineering Proceedings 6 (1): 54 (2021)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
MDPI
Peer Reviewed
true
In the scope of this paper, a first exemplary eddy current sensor for seawater conductivity measurement is developed, based on the derived sensor theory of a previous work. By high-frequency excitation, eddy currents are induced in the fluid and are counter-fields measured with a sensing coil. The coil’s resonance point is used for amplification. The developed prototype is analyzed based on a derived transfer function and FEM simulations. The theory is validated using a prototype implementation. With conducted experiments on a sensor test bench, the characteristics are confirmed and disturbances identified. It is shown that frequencies exist where temperature influence is minimal. This work gives a perspective for a novel sensor to allow seawater conductivity measurement.
Subjects
salinity
conductivity
inductive
eddy current
sensor
low cost
uncertainty
DDC Class
600: Technik
620: Ingenieurwissenschaften
Publication version
publishedVersion
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