Vibration level measuring device has a vibrating excitation membrane that is indirectly connected to piezoelectric vibration elements using a bolt mechanism

摘要

Device (1) for measuring, control and or fixing of the level of a medium in a container comprises a pipe-shaped vibration element (2) and a rod shaped vibration element (3) The former is set vibrating by a sprung membrane (4) that is driven by first and second piezoelectric ring shaped elements (5, 6). The piezoelectric elements are connected indirectly to the membrane via threaded bolts or studs (8) that are attached to matching nuts (9) to support disks.