CAPACITIVE ELECTRODE BASED MOISTURE MEASUREMENT CONVERTER ERRORS AND HOW TO ELIMINATE THEM

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24 январ 2024

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CAPACITIVE ELECTRODE BASED MOISTURE MEASUREMENT CONVERTER ERRORS AND HOW TO ELIMINATE THEM

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The article discusses the errors associated with the moisture measuring transducer that is based on the cylindrical electrode, along with their sources and calculation formulas for error elimination. The initial capacitance of the capacitive electrode humidity converter is dependent on its geometric parameters, such as the radii of the electrodes and their length. Accurate calculation of these geometric parameters enables the reduction of regular measurement errors in the input and switching circuit of the moisture converter to a minimum value, resulting in a significant increase in the informativeness and accuracy of the output signal. Consequently, some sources of measurement errors are eliminated or minimized during the design of the capacitive electrode moisture converter. To further reduce errors in the measurement chain and minimize the influence of internal and external destabilizing factors, there is a need to develop effective correction elements and schemes. Additionally, the article presents a method for calculating the total measurement error of the transducer by measuring the moisture content of scattered products with a capacitive electrode.

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# error# sources of error# entropic error# error calculation method# capacitive transducer# cylindrical electrode transducer

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https://eroi.uz/11.0008/A0124-0011

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