METHOD TO MEASURE LIQUID LEVEL IN CASE OF RESERVOIR POSITION CHANGE AND DEVICE FOR ITS REALISATION Russian patent published in 2013 - IPC G01F23/26 

FIELD: measurement equipment.

SUBSTANCE: method and device to measure liquid level in case of reservoir position change, standard capacitance level sensors are used, at least five in case of reservoir vibrations in two planes, suspended hingedly to maintain their vertical position in case of reservoir vibrations, arranged evenly along axes of its symmetry and forming together with external resistors a phasing RC - circuit of a generator of harmonic oscillations connected via a frequency meter of rated values and a controller, the program of which is equipped with a characteristic of frequency dependence on liquid mass and taking into account the shape of the reservoir inner cavity, and also with the possibility to correct values of dielectric permeabilities of different liquids, instrumental error in process of calibration after installation of capacitance level sensors in the reservoir by setting of the frequency value corresponding to the minimum mass of liquid in the reservoir, which, when achieved, triggers the additional indication mode, to the level indicator and liquid mass.

EFFECT: continuous measurement of level and amount of liquid as reservoir position changes in space and development of a device for its realisation using single-type standard capacitance level sensors, which will ensure high reliability.

5 cl, 4 dwg