Accuracy improvement of resonant sensor by an additional electrode in the measurement of liquid density and viscosity
ISSN: 0260-2288
Article publication date: 22 August 2024
Issue publication date: 20 November 2024
Abstract
Purpose
In the measurement of liquid density and viscosity, the change of resonance parameters due to the parasitic parallel capacitance of resonator affects the measurement accuracy. To improve the accuracy, a method was proposed to compensate the parasitic parallel capacitance of resonator by adding an electrode.
Design/methodology/approach
The new electrode (compensation electrode) was added into resonant sensor to make compensation capacitance. The closer the compensation capacitance was to the parasitic parallel capacitance, the better compensation was. The structural parameters of resonant sensor with the compensation electrode were determined by the simulation and experiment.
Findings
The effect of this method was examined by the experiment. The relative errors of density and viscosity were less than 0.15, 0.5 % and standard deviations were less than 0.0004 g/cm3 and 0.005 mPas, respectively.
Practical implications
The experimental results show that this method is valuable for the parasitic parallel capacitance compensation of immersed resonant sensor.
Originality/value
This paper has not been published in other journals.
Keywords
Acknowledgements
The authors would like to thank Prof Choe Yong Nam, the director of Mirae Centre of Science and Technology, Kim Chaek University of Technology for providing a good experimental condition. The authors would like to thank Prof Kang Il Yong, the director of the School of Science and Engineering, Kim Chaek University of Technology for his good advice. The authors also would like to thank An Hye Yon, for her help.
Data availability: My manuscript has no associated data.
Competing interests: The authors declare that they have no competing interests.
Author’s contributions: ANC designed and coordinated this research. JH conceived of the study. KCHH carried out experiments and data analysis. RUH participated in research coordination. KHC draft the manuscript. The authors read and approved the final manuscript.
Citation
An, N.C., Jang, H., Kim, C.H., Ri, U.H. and Kim, H.C. (2024), "Accuracy improvement of resonant sensor by an additional electrode in the measurement of liquid density and viscosity", Sensor Review, Vol. 44 No. 6, pp. 621-628. https://doi.org/10.1108/SR-04-2024-0289
Publisher
:Emerald Publishing Limited
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