A method of monitoring a level of a liquid in a tank of a moveable vehicle includes sensing an orientation of the moveable vehicle relative to a horizontal plane with a vehicle orientation sensor, determining if the orientation of the moveable vehicle is l...

The device has an electric motor (6) comprising units for controlling inertial rotation speed of a moving element, so that sine and cosine functions of an angle of the moving element with respect to reference inertia are zero on average on integer number o...