Predefined container level measurement and/or monitoring device - has vibration system with vibration elements in centres of parallel membranes acting as restoring spring

摘要

The mechanical vibration system contains two vibration elements at a distance from each other and each in the centre of two parallel membranes acting as a restoring spring. Both vibration elements are coupled to the facing sides of two wts. via a spring with high stiffness perpendicular to the vibrating element's axial direction and low stiffness parallel to this direction. USE/ADVANTAGE - For determining and/or monitoring a defined level in container. Exactly equal and opposite amplitude vibrations of the vibration elements are maintained under all operating conditions, including when detector rod has deposits attached.