CAPACITIVE FUEL SENSOR Russian patent published in 2021 - IPC G01F23/26 

FIELD: measurement equipment.

SUBSTANCE: invention relates to a capacitive fuel sensor, in particular for an aircraft, and to a method for manufacturing such a capacitive fuel sensor. Capacitive fuel sensor (100) contains several capacitor segments (1-9), which are superimposed one on top of the other along sensor axis (X). The capacitor segments are distributed over at least three sets and are electrically connected in parallel in each set. The capacitance measurement, which is performed for all three sets, allows one to determine the fuel level (H), taking into account the possible change in the fuel dielectric constant in the direction parallel to the sensor axis. The upper values of the height h_n for the capacitor segments are selected so that h_n-1 < h_n·(K_min-1)/(K_max-1) for any integer n from 2 to N, wherein N is the number of capacitor segments, n changes according to the order of superposition of the capacitor segments of the capacitor, and K_min and K_max are the minimum and maximum values of the fuel dielectric constant that are set for the capacitive fuel sensor.

EFFECT: technical result is an increase in the accuracy of determining the fuel level.

11 cl, 5 dwg