ELECTRONIC DEVICE AND METHOD FOR MEASURING THE DIELECTRIC LIQUID LEVEL

摘要

The invention relates to a device and method for measuring the level of a dielectric liquid, for example the gasoline in a motor vehicle tank, by measuring the variation of a condenser capacity, the armatures of condenser have a variable surface depending on the specific tank geometry, having said liquid as dielectric The condenser having the role of level sensor (S) is connected in an oscillating circuit RC (1) capable to generate a frequency depending on the capacity, hence, implicitly on the liquid level, then making the conversion into a current for actuating an output circuit (3), which integrates the signal and furnishes an output current proportional to the space factor and implicitly to the measured liquid level