Endress + Hauser Gmbh + Co. Kg

Endress+hauserse+co. Kg

Endress+hauser Gmbh+co.

Other

Vega Grieshaber Kg

Endress + Hauser Gmbh + Kg

Endress & Hauser Gmbh + Co.

Ralf Reimelt

Dirk Osswald

Armin Wendler

Joachim Neuhaus

Roland Welle

Igor Getman

Winfried Mayer

Herbert Schroth

Thomas Blödt

Michael Fischer

Stefan Gorenflo

Werner Thoren

Wolfram L&uuml;tke

Stefan Burger

Uwe Wegemann

Qi Chen

Ulrich Heitz

Klaus Feißt

Mayer Winfried

Norbert Thomann

Jürgen Steitz

Dirk Oßwald

A filling level measuring device for the microwave-based determination of the filling level of a filling material in a container includes at least one reflection point arranged outside the container. The reflection point generates a reflection point echo signal by means of reflection of a transmit signal, wherein an electronics unit calibrates and/or verifies a filling material echo signal in-line based upon the at least one reflection point echo signal. Further disclosed is a method for the in-line calibration and/or verification of a filling level measuring device.

Filling level measuring device and method for the in-line calibration and/or verification of a filling level measuring device

A radar-based fill-level measuring device, comprises the following parts: a semiconductor component for producing electrical high-frequency signals or for determining the fill-level value from the received high-frequency signals; a dielectric waveguide placed in contact with the semiconductor component to couple the high-frequency signals as radar signals into an antenna and/or to couple received radar signals from the antenna as electrical signals into the semiconductor component; a potting encapsulation, which encapsulates at least the waveguide radially such that a defined cavity is formed between the waveguide and the potting encapsulation.

Fill-level measuring device

A level radar device with adaptive, angle-dependent transmission power adjustment, which calculates the maximum permissible transmission power of the transmitted signal on the basis of the radiation direction of the transmitted signal and the radiation characteristic of an antenna.

Level radar device with adaptive transmission power adjustment

The present disclosure relates to a fill level measuring device for measuring a fill level of a liquid material in a container, including at least two flexible wire probes that extend into the container, a signal generator, and an end weight for each flexible wire probe. The end-weights are joined together such that they can rotate with respect to each other and/or can move in an axial direction with respect to each other.

Fill level measurement device

An arrangement for measuring fill level of a fill substance in a container, comprising: a fill level measuring device, wherein the device includes measuring device electronics and an antenna connected to the measuring device electronics; and at least one feedthrough installed in a signal path of the microwave signals or the reflection signals; the feedthrough. The feedthrough comprises a hollow conductor, into which a microwave transparent window is inserted gas tightly. The window comprises: a disk, whose thickness corresponds approximately to a half wavelength or a small integer multiple of the half wavelength of a first, hollow conductor propagation capable, signal mode of the microwave signals at a predetermined signal frequency in the disk; and two matching layers located on oppositely lying, outer surfaces of the disk. The thickness of each matching layer corresponds approximately to a fourth of the wavelength of the first, hollow conductor propagation capable, signal mode of the microwave signals at the predetermined signal frequency in the matching layers.

Arrangement for measuring fill level with a fill level measuring device working with microwaves

An apparatus for ascertaining and monitoring fill level of a medium in a container by means of a travel-time measuring method utilizing high-frequency measuring signals. An antenna having an antenna coupling region and an antenna region, or a waveguide having a probe coupling region and a probe measuring region extending into the container is included. Hollow spaces present in the antenna coupling region, in the antenna region, in the probe coupling region and/or in the probe measuring region are filled at least partially with a dielectric filling body. The dielectric filling body has internally at least one, hermetically sealed, reserved volume and the hermetically sealed, reserved volume is so embodied, that the dielectric filling body has a predetermined wave resistance and/or the high-frequency measuring signals have a predetermined propagation characteristic.

Apparatus for ascertaining and monitoring fill level of medium in a container

A fill level measuring device for capacitive fill level measurement and/or travel time fill level measurement of a fill substance in a container. The measuring device has a coaxial measuring probe, whose inner conductor is galvanically isolated from its shield conductor, and whose shield conductor lies electrically at a reference potential. The device additionally includes: a securement apparatus lying electrically at a reference potential and serving for securement of the measuring device on a container opening equipped with a counterpart of the securement apparatus; and a washer made of an electrically conductive material and clamped in measurement operation between the securement apparatus and the counterpart. The inner conductor is completely surrounded in measurement operation by an insulating layer and passes through the washer into the container. The device additionally includes an insulating body adjoining the insulating layer and coaxially surrounding the inner conductor. The insulating body has a washer-shaped section clamped between the securement apparatus and the washer. The shield conductor coaxially surrounds the inner conductor and is connected mechanically and in an electrically conducting manner with the washer. At least one electrical contact element is affixed in the washer outside of a region of such covered by the insulating body and on a spring element. Via the contact element and the washer, the shield conductor is connected in an electrically conducting manner to the securement apparatus.

Fill level measuring device

An apparatus for ascertaining and monitoring the fill level of a medium in a container by means of a travel-time measuring method. The apparatus includes: A coupling unit for coupling measurement signals onto/from at least one conductive, first element extending into the container; a first securement element provided in the region of the coupling unit for securing the apparatus at the container; and a control/evaluation unit for ascertaining a fill-level measurement signal. The apparatus has a high transfer quality, while, at the same time, being mechanically and chemically stable.

Apparatus for ascertaining and monitoring fill level of a medium in a container

A method for ascertaining and monitoring the fill level of a medium in a container the method utilizes a fill-level measuring device, wherein, according to the technique of time-domain reflectometry, high-frequency measuring signals are guided via at least one measuring probe in the direction of the medium, reflected on at least one interface of the medium as wanted echo signals or on disturbance locations as disturbance echo signals, and received. A current echo curve is formed from a produced, reference echo signal, wanted echo signals and disturbance echo signals, wherein, at least from a first disturbance echo signal and the reference echo signal, which are caused in a measurement-inactive region of the fill-level measuring device, a base point is located in the current echo curve, and wherein the fill level is ascertained from the distance between the base point and the wanted echo signal formed in a measurement-active region of the fill-level measuring device.

Method for ascertaining and monitoring fill level of a medium in a container

A device for determining and/or monitoring the fill level of a medium in a container, including: a first conductive element; a second conductive element; and a sealing ceramic. The sealing ceramic being arranged in a region between the two conductive elements, for the purpose of process separation. A first seal, which is provided between the first conductive element and the sealing ceramic, a second seal, which is provided between the sealing ceramic and the second conductive element, and a control/evaluation unit, which determines the fill level of the medium in the container on the basis of a capacitance measurement or on the basis of a measuring of travel time of measurement signals are also included.

Apparatus for determining and/or monitoring the fill level of a medium in a container

The invention relates to a measuring device which determines the filling level by means of high-frequency measuring signals which are guided along a waveguide. The invention is based on the object of optimizing the waveguide. According to a preferred embodiment of the apparatus according to the invention, the waveguide is a wire cable which comprises a plurality of individual wires of a predetermined diameter which are twisted together.

Apparatus for determining and/or monitoring the filling level of a product in a container

A measuring device for determining the filling level of a product or the position of the interface between two media or phases in a container by means of high-frequency measuring signals which are guided along a waveguide. The waveguide comprises a wire cable with a plurality of individual wires of a predetermined diameter which are twisted together.

The invention concerns a device for determining and/or monitoring the fill level of a fill material in a container with a transmitting-/receiving-unit, which produces and receives high frequency measurement signals, and an evaluation/control-unit, which determines the fill level of the fill material in the container on the basis of the travel time of the high frequency measurement signals. High frequency measurement signals are guided along a conductive element. The coupling onto, and from, element is done by a coupling unit. The device is secured at the container using an attachment part placed above the maximum fill level to be measured and/or monitored in the upper region of the conductive element, a horn-shaped element is arranged such that its lower opening area facing in the direction toward the surface of the fill material lies approximately in the plane of the attachment part.

Device for determining and/or monitoring the level of a filled substance in a container

The invention relates to a device for determining and/or monitoring filling of a product or the position of the boundary surface between two media or phases in a container. The device comprises a signal generating unit that generates high-frequency measuring signals, an injection unit and a surface waveguide, wherein the measuring signals are injected into the surface waveguide by means of the injection unit and directed toward the filling product via the surface waveguide. The device also comprises a receiver/evaluation unit, which directly or indirectly determines filling of the product or the position of the boundary surface in the container during the running time of the measuring signals reflected on the surface or boundary surface of the filling product. The invention aims at providing a device which is configured in such a way that parasitic voltages are effectively diverted. This is achieved in that the surface waveguide is connected to a frame potential by means of a coupling.

Method for determining and/or monitoring filling of a product in a container

A level sensor which is capable of largely eliminating the influence of structural parts and/or the formation of deposits on the measuring accuracy and on the measuring sensitivity of the level sensor. There is provided, a launching unit which has at least one length, which essentially corresponds to the distance from the container wall to the lower edge of the structural part, and which is positioned in such a manner that a transition area launching unit conductive element is located approximately in the plane of the lower edge of the structural part, with the diameter of the opening of the launching unit on the transition launching unit conductive element is in the order of magnitude of the wavelength of the high-frequency measurement signals.

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Freiburg, Germany

Ralf Reimelt