Patent ID: 10830630

Abstract:
A TDR fill level measuring device for measuring the fill level of a medium in a container, having a transmitting unit for transmitting a pulse-shaped electromagnetic measuring signal, a receiving unit for receiving a reflection signal, an evaluation unit for evaluating the reflection signal and a waveguide for guiding the measuring signal and the reflection signal, the waveguide having at least two waveguide sections, each of which has a functional waveguide cross-sectional face, wherein the functional waveguide cross-sectional face corresponds to the cross-sectional face of the waveguide conductor, wherein a reference reflector is present, at least a part of the measuring signal being reflected at least once on the reference reflector during operation. High reliability and a simply design are achieved by the reference reflection being formed by a transition between two waveguide sections having different shapes and/or different sizes of the functional waveguide cross-sectional face.