Patent ID: 8752426

Claim:
A fill-level measuring device for determining fill level of a medium in a container or a pipeline, comprising: a tubular housing; a membrane, which is placed in such a manner on one of the two end regions of said tubular housing that it seals said tubular housing on such end region; an oscillatable unit placed on the side of said membrane facing away from said tubular housing; a driver/receiver unit, including a plurality of piezoelectric elements arranged in a stack; a pressure screw unit, said driver/receiver unit being placed via said pressure screw unit in such a manner in said tubular housing that it oscillates in the direction of the longitudinal axis of said tubular housing between said membrane and said pressure screw unit, whereby it excites said oscillatable unit via said membrane to execute oscillations; a control/evaluation unit, which evaluates amplitude, frequency, and/or phase of the oscillations of said oscillatable unit; and a temperature sensor for determining temperature of the medium, wherein: said temperature sensor is integrated in a ceramic element, bolt or in the pressure screw unit, which are in thermal contact with the medium via said membrane or said tubular housing; and said ceramic element bolt or pressure screw unit are so selected that said oscillatable unit oscillates unimpaired by said temperature sensor.