METHOD FOR PRELIMINARY CALIBRATION OF CAPACITIVE LEVEL SENSOR OF INTERFACE Russian patent published in 2023 - IPC G01F23/26 

FIELD: measuring equipment.

SUBSTANCE: invention is intended for measuring the levels of interfaces between media in various industries. A method for pre-calibration of a capacitive interface level sensor, which consists in performing the steps at which, in the process of assembling the sensor: measuring the capacitance of the main measuring channel, which, within the framework of pre-calibration, is only one of the metal rods connected to the computing unit of the capacitive sensor; and measure the capacitance of each compensation measuring channel; calculate by means of a microcontroller the difference between each value of the capacitance of the compensation and main measuring channels; then repeat these operations to obtain a set of primary correction factors; the average value of the correction factor is calculated by means of the microcontroller based on the set of primary correction factors and the resulting value is entered the average value of the correction factor into the non-volatile memory of the computing unit.

EFFECT: technical result is an increase in the reliability and manufacturability of the design and, as a consequence, an increase in the accuracy of measurements of the level of the interface between media.

16 cl, 32 dwg