Radar level gauge system of two-mode equation

摘要

Radar level gauge system for measuring the liquid level of the material injected into the container is disclosed. System, guiding the reflected and waveguide extending towards the surface of the filling material, a transmitter for transmitting a microwave signal in the propagation mode in the first waveguide, the surface of the injected material and a receiver for receiving the microwave signals propagating in opposite directions through the wave tube. Furthermore, a transition member for connecting the processing circuitry for determining the filling level of the container based on the microwave signal reflected, the transmitter and the waveguide, part of the microwave signal transmitted die and a transition member which is adapted to allow the leaking to the propagation mode of 2. The propagation mode of the first and second, the range of the frequency band which allows the propagation of the microwave signal in the mode propagation in two different in waveguide, receiver, microwave signal of mode propagation at least two different It is arranged to receive.