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Frequency adaptive conductivity measurement based on reverse approximation
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DOI：10.1016/j.measurement.2023.113973.png)
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摘要
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Accurately measuring the solution conductivity is important both for environmental assessment and process monitoring. A reverse approximation frequency adaptive conductivity test method is proposed in this paper. This method avoids the complex calculation of the time constant tau of the first-order resistance-capacitance network and eliminates the influence of the accessory capacitance on the measurement results to the greatest extent. Through 9 groups of optimal frequency selection experiments, the optimal measurement frequency of R1 and Rx fixed ratio in a certain range is obtained. The optimal measurement frequency and dimensionless relationship model constitute a complete frequency adaptive solution conductivity measurement method.Through comparative analysis, the mean absolute percentage error of the measurement results is 2.65%, which not only improves the measurement accuracy of the existing self-developed equipment but also provides a new solution to solve the influence of additional capacitance in the conductivity measurement process.
Keyword:
Frequency adaptive
Dimensionless model
Reverse approximation
Conductivity
期刊
IF:
5.6
论文数:
2.1W
被引数:
5.4W
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