| 摘要 |
The present invention relates to a device for measuring a filling level of a filling material, wherein the device comprises a receiving unit with such buoyancy properties that it floats on the surface of the filling material. The receiving unit measures the distance between the transmitting and receiving units by means of a distance measurement on the basis of a first signal that is transmitted by at least a first transmitting unit and received by the receiving unit, wherein the filling level can be determined from this measured distance.
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