| 摘要 |
<p>The invention relates to a device (1) which uses ultrasound to measure the filling level for liquids in a tank (2). The device (1) consists of a housing (3) in which a piezoelectric disc (4) connected to a circuit board (5) and an energy store (6) is provided. A display unit (8) is arranged in the housing (3), and on the side of the piezoelectric disc (4) that faces the tank (2), the disc is given a layer (11) consisting of elastic material.</p> |
