Patent ID: 7043981
Filing Date: 2006-05-16
Classification: B06B,G01F

Abstract:
1. A device for determining and/or monitoring a predetermined level in a container, comprising: a mechanical oscillating structure mounted at the height of the predetermined level; a pot-shaped housing sealed at one end with a diaphragm and defining a longitudinal axis; a plurality of piezoelectric elements disposed in a stack; a first and second die, each die being located at one end adjacent to said stack; and a pressure screw screwed into said housing, wherein: said stack is fastened along the longitudinal axis defined by said housing between said pressure screw and said diaphragm; and said plurality of piezoelectric elements serving to cause said mechanical oscillating structure to oscillate and to receive its oscillations, that are dependent on an instantaneous level, and make it accessible to further processing and/or evaluation; and a sheath closed off at its ends by said first and second dies, wherein: said piezoelectric elements are disposed in said sheath.