Measuring device for determining and/or monitoring the amount of contents in a container

A fill-measuring device for determining and/or monitoring the fill level of a container, said device being comprised of:

• a membrane (1) which is configured to vibrate;
• a rigid membrane rim (2) in which the membrane (1) is disposed;
• a drive device (4) having a drive end face (5) capable of at least one of, impelling the membrane (1) into vibration, and converting vibrations of the membrane (1) into an electrical signal;
• and
• an attaching device (13) for attaching the drive device (4) to the membrane rim (2);
• characterized in that:
• a part of the attaching device (13) is disposed in a region extending between the membrane (1) and the drive end face (5) of the drive device (4);
• and
• at least one pressure transmission element (6) is disposed between the membrane (1) and the drive end face (5) of the drive device (4), in a manner such that the membrane (1) and the drive end face (5) are coupled together for purposes of transmission of vibration;
• wherein the pressure transmission element is attached to a membrane shaft which projects from the membrane in the direction of the drive device;
• and wherein a tensile element (16) is attached to the attaching device (13), which tensile element (16) extends through the drive device (4) and applies stress to the side of the drive device (4) which is directed away from the membrane (1), which stress is directed toward said membrane (1).