Endress+hauser Gmbh+co. Kg

Endress+hauserse+co. Kg

Endress + Hauser Gmbh + Co.

Endress + Hasuer Gmbh + Co. Kg

Endress U. Hauser Gmbh U.co. Kg

Armin Wernet

Kaj Uppenkamp

Roland Dieterle

Gerd Bechtel

Franco Ferraro

Robert Schmidt

Volker Dreyer

Dietmar Frühauf

Christian Strittmatter

Andreas Krumbholz

Michael Dötsch

Axel Humpert

Hans-Jörg Florenz

Igor Getman

Romuald Girardey

Sascha D'Angelico

Wolfgang Brutschin

Max Jehle

Udo Grittke

Izabella Sandor

Jürgen Becker

Walter Rombach

Jurgen Meier

Florian Falger

Stefan Rummele-Werner

Clemens Heilig

Michael Hübner

Michael Huebner

Clemens Helig

Hans-Jorg Florenz

Hans-J&ouml;rg Florenz

Katarina Paulsson

Dirk Wiedmann

Dirk Schrank

Kag Uppenkamp

Kaj Penkamp

Stefan RÜMMELE-Werner

A method for determining and/or monitoring a predeterminable fill level of a medium in a container using a vibronic sensor having at least one sensor unit with a mechanically vibratable unit, comprises exciting the mechanically vibratable unit with an excitation signal to produce mechanical vibrations, and receiving the mechanical vibrations in the form of a reception signal, determining an amplitude and a frequency of the reception signal, comparing the frequency and amplitude of the reception signal with a predeterminable frequency limit value and a predeterminable amplitude limit value, and determining a reaching of the predeterminable fill level on the basis of the comparison.

Method for operating a vibronic sensor

A method for monitoring condition of a vibronic sensor for determining and/or monitoring at least one process variable of a medium in a containment and having at least one sensor unit having a mechanically oscillatable unit includes: exciting the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, and receiving the mechanical oscillations in the form of a received signal, determining a measured value for amplitude and a measured value for frequency of the received signal, comparing the measured values for amplitude and frequency with reference values for amplitude and frequency, and ascertaining a condition indicator from the comparison.

Method for monitoring condition of vibronic sensor for determining and monitoring process variable of medium in container, involves determining status indicator from comparison measured value for amplitude and frequency with reference value

Provided is a method for process monitoring in automation technology based at least on one capacitive and/or conductive measuring probe for determining at least one process variable of at least one medium in a container, an apparatus suitable for executing the method, as well as a computer program and a computer readable medium. The method includes method steps of ascertaining whether the measuring probe is at least partially in contact with the medium and registering as a function of time at least an electrical conductivity of the medium, a dielectric constant of the medium and/or a degree of coverage of the measuring probe by the medium. The method also includes a step of monitoring the process running within the container based on the electrical conductivity, the dielectric constant and/or the degree of coverage as a function of time.

Method for process monitoring

Disclosed is a method for diagnosis of a two-conductor field instrument and a corresponding two-conductor field instrument. In a normal operating mode, an input voltage is provided and an output current is output. In a diagnostic operating mode, the method includes: providing a first diagnosis-input voltage and outputting a first diagnosis-output current during a first time interval, providing a second diagnosis-input voltage and outputting a second diagnosis-output current during a second time interval, determining the second time interval from the first time interval, registering a first and second diagnosis-output voltage as a function of the first and second diagnosis-output current, and checking the functionality of the two-conductor field instrument by the first and second diagnosis-input voltage, the first and second time interval, the first and second diagnosis-output electrical current, the first and second diagnosis-output voltage based on the input voltage and/or based on the output electrical current.

Diagnosis of a two-conductor field instrument

The present disclosure relates to a measuring system including: an automation field device embodied for determining and/or monitoring a process variable of a medium; a connection unit, which includes a connection plug, which is electrically connected with the field device, and a cable, which is connected to the connection plug with a cable connection and which serves for supplying the field device with electrical energy and/or for transmitting information between the field device and a superordinated unit; and a protective cover, which surrounds the connection unit and the field device connected with the connection unit in a protection section, wherein by means of the protective cover the impact resistance of the measuring system in the protection section is increased.

Measuring system

The present disclosure relates to an apparatus for determining and/or monitoring at least one process variable of a medium in a containment, comprising a sensor unit and an electronics unit, wherein the electronics unit includes a transceiver unit and a transceiver protecting unit for limiting an input voltage of the transceiver unit to a first transceiver voltage value. According to the present disclosure, the transceiver protecting unit includes a first limiting unit and a transistor unit, the transistor unit connected in series with the transceiver unit, wherein the first limiting unit is connected in parallel with transceiver unit and to a control terminal of the transistor and is configured to control an input voltage for the control terminal of the transistor to a predeterminable control value such that the input voltage of the transceiver unit is limited to the first transceiver voltage value.

Electronic field device with transceiver protecting circuit

Disclosed is an apparatus for determining and/or monitoring a predetermined fill level of a medium in a containment. The apparatus includes a sensor unit and an electronics unit. The electronics unit includes a limiting unit embodied to limit an electrical current or voltage in at least one portion of the electronics unit, a switching unit embodied to control a process switch, and a signal transformation unit embodied to transform a dynamic, electrical input signal into a static, electrical output signal. The static output signal flows through at least one component of the electronics unit. Furthermore, the electronics unit is embodied to supply the sensor unit with an excitation signal, to receive from the sensor unit a received signal, to determine and/or to monitor whether the predetermined fill level has been reached, and to produce a control signal.

Fail-safe limit level switch

A sensor adapter for a device for determining and/or monitoring at least one process variable of a medium in a container with a measuring probe, comprising: at least one adapter measuring probe with at least one adapter electrode, an adapter housing with structure for detachably fastening the sensor adapter on the device, and a contacting unit for the electrical contact of at least one electrode of the device with at least one adapter electrode of the sensor adapter.

Sensor adapter

Apparatus for capacitive determining and/or monitoring of at least one process variable of a medium in a container, comprising at least one sensor unit with at least one sensor electrode, a housing and an electronics unit, wherein the electronics unit is embodied to supply the sensor unit with a high-frequency exciter signal, to receive a response signal from the sensor unit, and to provide at least from the response signal information concerning the fill level of medium in the container. The apparatus includes, furthermore, a coupling element, which is arranged and embodied in such a manner at least at times to establish a conductive connection between at least one portion of the housing and at least one component of the electronics unit and at least at times to effect a capacitive coupling between the two components.

Coupling element for a capacitive fill level measuring device

In a plug connector for connecting a field device of automation technology to an energy supply and/or to an evaluation unit, the plug connector includes a connection plug (M) for the field device, wherein the connection plug (M) is composed, at least partially, of a transparent material, wherein at least four display elements (gn ye, ye, rd) are arranged in the connection plug (M). A first display element (gn) signals operational readiness of the field device; second and third display elements (ye, ye) signal two antivalent switch outputs (MIN, MAX) of the field device; and a fourth display element (rd) signals a disturbance or malfunction of field device. A circuit (NOR, XNOR) is provided to detect a disturbance or malfunction of field device based on the antivalent switch outputs (MIN, MAX) of the field device, and to activate fourth display element (rd) upon detection.

Plug connector

A method and an apparatus for monitoring at least one media-specific property of a medium in automation technology with a measuring probe, wherein the at least one media-specific property is ascertained in a conductive operating mode and in a capacitive operating mode of the measuring probe. The conductive operating mode and the capacitive operating mode are operated alternately, wherein based on the measured values, which are ascertained in at least one of the two operating modes, it is checked, whether the at least one media-specific property to be monitored lies within a predetermined tolerance band, and wherein a report and/or a switching signal is generated, when the at least one media-specific property to be monitored lies outside of the predetermined tolerance band.

Method for monitoring at least one media-specific property of a medium

Method for monitoring a predetermined fill level of a medium () in a container () with at least one measuring probe () and an electronics unit (), wherein the measuring probe () is operated alternately in the conductive and in the capacitive operating modes, wherein the measuring probe () is supplied with an exciter signal, which is composed of two different, time alternatingly sequential, periodic signal components, wherein in a first time interval the first periodic signal component is generated for the conductive operating mode and in a second time interval the second periodic signal component is generated for the capacitive operating mode, wherein from the capacitive or conductive operating mode response signal obtained from the measuring probe () as a function of the current signal component, it is ascertained, whether the predetermined fill level has been reached, and wherein a report is generated upon the exceeding or subceeding of this fill level.

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

A probe unit having a coaxial structure and including a probe electrode, a guard electrode and a contacting module arranged on a section of the probe electrode, which contacting module including an insulating sleeve, a flexible circuit board with a first conduction path for the electrical contacting of the probe electrode and a second conduction path for the electrical contacting of the guard electrode, and a module housing, wherein a first contact plate is provided that electrically contacts the first conduction path, the module housing including a second contact plate that electrically contacts the second conduction path, wherein the module housing has a pot-shaped geometry with a cylindrical wall, which wall substantially surrounds, protects and/or electromagnetically shields at least the probe electrode in the region in which the contacting module is arranged, at least a part of the insulating sleeve, and at least sections of the circuit board.

Probe unit

A method and an apparatus for monitoring a set fill level of a medium in a container using a fill level measuring probe that is designed to operate as a conductive fill level measuring probe in a conductive operating mode and as a capacitive fill level measuring probe in a capacitive operating mode, with a control/evaluation/output unit that is designed to alternately trigger conductive operating mode and capacitive operating mode, and with a control/evaluation/output unit that determines whether the set fill level of the medium in the container has been reached on the basis of the measured values from the two operating modes, and which generates a message when the set fill level is exceeded and/or undershot.

Method and apparatus for monitoring a predefined filling level of a medium in a container

A method for stabilizing the clock frequency of a microcontroller associated with a field device of automation technology. The field device as a function of application is exposed to different process conditions, wherein the clock frequency of the microcontroller is ascertained at least two different temperature values, and/or at least two different voltage values. Based on the ascertained values, the dependence of the clock frequency of the microcontroller on temperature over a predetermined temperature- and/or frequency range and/or the dependence of the clock frequency of the microcontroller on voltage over a predetermined voltage- and/or frequency range is ascertained. The ascertained values are stored, and the influence of temperature and/or voltage on the clock frequency of the microcontroller is at least approximately compensated taking into considering the ascertained temperature dependence and/or the ascertained voltage dependence.

Growing community of inventors

Rheinfelden, Germany

Armin Wernet