Device for gauging the level of a fluid
First Claim
1. A device for determining the level of a fluid contained in a container, that is, a flowing or granulate material, comprising a transmitter for transmitting a polarizable microwave signal through a first waveguide section, a receiver for receiving a reflected microwave signal, an electronic unit, arranged to determine the reflex position of the reflected microwave signal, and an antenna means with a second waveguide section, the first waveguide section being preferably circular in cross section,characterized in that, the transmitter and receiver are arranged respectively to transmit and receive microwave signals in different waveguide modes which are mutually orthogonal, that is, mutually independent, and further characterized by an interchangeable third waveguide section inserted between the first and second waveguide sections, provided with means for acting upon said microwave signal through polarization and/or damping, for optimal adaption of the device to different containers and antennae.
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Accused Products
Abstract
A device for gauging the level of a fluid in a container is described. It comprises a transmitter for transmitting a polarizable microwave signal through a first waveguide section, a receiver for receiving a reflected microwave signal, an electronic unit for determining the reflex position of the reflected microwave signal and an antenna means with a second waveguide section. The device is primarily characterized in that the transmitter and receiver, respectively, transmits and receives a waveguide mode each, mutually orthogonal, and by an easily replaceable third waveguide section (6, 16, 17) inserted between the first (2) and second (5) waveguide sections, provided with means (12, 14, 15, 22) for polarization and/or damping for optimal adaptation of the device to various containers and antennae.
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Citations
7 Claims
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1. A device for determining the level of a fluid contained in a container, that is, a flowing or granulate material, comprising a transmitter for transmitting a polarizable microwave signal through a first waveguide section, a receiver for receiving a reflected microwave signal, an electronic unit, arranged to determine the reflex position of the reflected microwave signal, and an antenna means with a second waveguide section, the first waveguide section being preferably circular in cross section,
characterized in that, the transmitter and receiver are arranged respectively to transmit and receive microwave signals in different waveguide modes which are mutually orthogonal, that is, mutually independent, and further characterized by an interchangeable third waveguide section inserted between the first and second waveguide sections, provided with means for acting upon said microwave signal through polarization and/or damping, for optimal adaption of the device to different containers and antennae.
Specification