Abstract: A method for updating device descriptions for field devices in process automation technology by loading the required descriptions from an external server (S), by means of an application program, into a controller (for example, PC1; PC2).

Abstract: A synchronous data transmission system for transmission of data between two communication partners, of which one serves as a transmitter and one as a receiver, comprising a clock signal producer which produces a transmission clock signal with a transmission clock signal rate from the transmitter to the receiver, which during the occurrence of one of the events equals an event specific transmission clock signal rate associated with the arising event and during an event free period of time equals a fundamental clock rate different of all event specific transmission clock signal rates.

Abstract: A diplexer for a homodyne FMCW-radar device, which is distinguished by small dimensions of its hollow conductor structure and therefore can be manufactured simply and cost effectively. The hollow conductor structures of the diplexer can be cut out from two half shells, and the latter joined to form the diplexer. Various materials provide options for the material of the half shells.

Abstract: A method for ascertaining and/or evaluating the fill-state of a container filled with at least one medium, wherein high-frequency, electromagnetic, measuring signals are emitted by a fill-level measuring device and received back as wanted echos reflected at an interface of the media. The electromagnetic, measuring signals are received back as an end echo reflected at a measuring range end, wherein, from the received wanted echos and the end echo, an echo curve is formed as a function of travel-time and/or the travel-distance, wherein, by means of a search algorithm integrated in the fill-level measuring device, number, existence and/or position of individual wanted echos and of the end echo in the echo curve are/is ascertained and applied for classifying the currently present fill-state in the container relative to predetermined, stored, fill situations in the container.

Abstract: A method for determining and/or monitoring fill level of a medium in a container with a measuring device, which works according to the travel time measuring method, wherein measurement signals are transmitted toward the medium and are received, wherein from the high-frequency total measurement signal, composed by superimposing the transmitted measurement signals, the reflected wanted echo signals and the disturbance echo signals, a raw echo curve or digitized envelope curve is ascertained. The wanted echo signals and/or the disturbance echo signals in the raw echo curve or the digitized envelope curve are ascertained based on an ideal echo curve, which shows the amplitude of the echo signals of an ideal reflector as a function of the distance from the ideal reflector, and based on the ascertained wanted echo signal the fill level is determined.

Abstract: A field device for determining or monitoring a process variable in automation technology, wherein the field device meets a safety standard, which is required in a predetermined safety-critical application, comprising a sensor, which works according to a defined measuring principle, and a control/evaluation unit, which processes and evaluates measurement data delivered by the sensor along at least three redundantly and/or diversely designed measuring channels, and wherein there is associated with the control/evaluation unit a voter, which is composed of a plurality of components, which are at least partially double redundantly designed.

Abstract: A pressure difference sensor includes a capsule, which has a ceramic capsule body. The capsule has a transducer seat in its interior, wherein there is arranged in the transducer seat a semiconductor pressure measuring transducer core, which has a measuring membrane body and at least one support body. The measuring membrane body is connected pressure-tightly with the at least one support body, which has a pressure inlet opening.

Abstract: An apparatus for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit; an electrodynamic transducer unit for exciting the oscillatable unit by means of an exciter signal to execute mechanical oscillations and for receiving the mechanical oscillations of the oscillatable unit and transducing them into an electrical, received signal; and an electronics unit, which at least determines and/or monitors the process variable based on the received signal. The invention is distinguished by features including that the electrodynamic transducer unit has exactly one coil, which serves both as a drive element as well as also a receiving element.

Abstract: An antenna array for a radar sensor, wherein the antenna array has a number of antenna elements linearly arranged next to one another. The antenna elements are designed for transmitting or receiving a radar signal, and the antenna array has a switching unit, which is designed to connect the antenna elements according to a predetermined switching sequence individually, one after the other in time, with a transmitting or receiving unit of the radar sensor. The switching sequence, according to which the antenna elements are connected one after the other with the transmitting or receiving unit, deviates from the spatial sequence of the antenna elements in the antenna array.

Abstract: Apparatus for determining and/or monitoring at least one limit value of a process variable of a medium in a container, comprising at least one sensor unit for registering a measured value dependent on the process variable and at least one electronics unit for producing a measurement signal dependent on the process variable. The invention is distinguished by features including that the apparatus is embodied to draw energy via a voltage output and a digital input of a recorder apparatus or a process control system.

Abstract: A method and an apparatus for determining at least one flow characteristic of an essentially laminarly flowing, gaseous or liquid medium in a pipeline. Distinguishing features include: that at least one modulation element introduced into, or placed in, the pipeline produces, at least for the case, in which the medium is flowing with a velocity different from zero, a change in density of the medium, at least at times, in the vicinity of the modulation element; that at least one mechanically oscillatable unit introduced into, or placed in, the pipeline and spaced from the modulation element is excited to resonant oscillations; that mechanical oscillations are received by the mechanically oscillatable unit and converted into an electrical, received signal, wherein the received signal is sensitive to the density change; and that the at least one flow characteristic of the medium is determined from the reaction of the received signal of the mechanically oscillatable unit to the density change.

Abstract: A fill-level measuring device for ascertaining and monitoring fill level of a medium located in the process space of a container by means of a microwave travel time measuring method. The device comprises a measurement transmitter and an antenna unit, which is constructed at least of a hollow conductor and a radiating element A microwave transmissive, process isolating element is inserted for process isolation into the hollow conductor between the measurement transmitter and the horn shaped radiating element contacting the process space. The process isolating element is embodied as a hollow body having at least one tubular hollow body region matched to the shape of the hollow conductor, and a pointed hollow body region neighboring the hollow body region in the direction of the radiating element and having a wall thickness selected based on reflection, or lack thereof, of the microwave signals.

Abstract: An apparatus for determining and/or monitoring at least one process variable of a medium. The apparatus includes: at least one mechanically oscillatable unit, which comes in contact at least partially with the medium; at least one transducer unit, which excites the mechanically oscillatable unit to execute mechanical oscillations and which receives mechanical oscillations from the mechanically oscillatable unit; and at least one housing. At least one limiting element is provided. The limiting element is embodied and arranged in such a manner that the limiting element at least partially surrounds the mechanically oscillatable unit and the therefrom resulting reduction of volume surrounding the mechanically oscillatable unit increases the measuring sensitivity of the apparatus. Furthermore, the invention relates to a limiting element.

Abstract: A tube-equipped, flanged, pressure transfer structure comprises a flange for connecting to a counterflange; a tube, which is secured to the flange; a hydraulic path, which extends from a first opening in a front end surface of the tube facing away from the flange to a second opening in the rear end surface of the flange facing away from the tube; and an isolating diaphragm, which covers the first opening and is connected pressure-tightly with the front end surface of the tube along a peripheral edge, wherein the hydraulic path is filled or fillable with a pressure transfer liquid, in order to transfer a pressure presiding at the isolating diaphragm to the second opening, wherein the tube has a front section having the end surface and a first diameter and an intermediate section with a second diameter, which is less than the first diameter, and wherein the front section is shorter than the intermediate section.

Abstract: A circuit for regulating and monitoring a signal current, comprising a regulating circuit; and a monitoring circuit. The regulating circuit comprises: a first controlled voltage source for outputting a target value dependent controlled voltage; a current adjust circuit for adjusting the signal current in dependence on the controlled voltage and a first feedback voltage by means of a potentiometer; and a first feedback path, with at least one first resistance element across which the signal current flows. The voltage drop across the resistance element or one of the voltages of the current adjust circuit dependent thereon is supplied as a first feedback voltage.

Abstract: A capacitive pressure measuring cell, including a ceramic platform and a ceramic measuring membrane, which are connected pressure tightly along a joint to form a reference pressure chamber between them. The measuring membrane has a first electrode facing the platform, and the platform has at least a second electrode facing the measuring membrane. The capacitance between the first and second electrodes depends on the difference between a pressure externally acting on the measuring membrane and a pressure reigning in the reference pressure chamber, wherein the joint has a thickness d, which defines an equilibrium distance between the measuring membrane and the front side of the platform. On the front side of the platform, a support layer is arranged, which comprises an inorganic insulator, wherein the support layer has a thickness of at least 0.2, and wherein the second electrode is arranged on the support layer.

Abstract: A method and an apparatus for determining or monitoring a predetermined fill level, a phase boundary or a density of a medium in a container with an oscillatable unit. The oscillatable unit is placed at the height of the predetermined fill level and is excited to oscillate successively with discrete exciter frequencies following one another in a frequency scanning operation (sweep) within a predeterminable frequency band in the working range of the oscillatable unit. The corresponding oscillations of the oscillatable unit are received in the form of received signals; wherein that exciter frequency is ascertained in the frequency scanning operation, at which the oscillatable unit oscillates with an oscillation frequency, which has a predetermined phase shift between the transmission signal and the received signal; and wherein the transmitting/receiving unit excites the oscillatable unit to oscillate with the ascertained oscillation frequency.

Abstract: An electronic device, and a method for executing a plurality of processes with the electronic device, wherein, in a resource-conserving manner, rapid response times are achievable, in that the electronic device, during operation, executes first and second processes (P1, P2), of which the first processes (P1) are executable as approximate solutions (P1-A) and as detailed calculations (P1-C). The electronic device includes a processor for executing processes (P1, P2) and an electronic unit or a multitasking-capable operating system. The electronic unit includes a component, which recognizes whether the processor is active, and serves, while the processor is active and a simultaneous execution of at least two processes is required, for executing the first processes (P1), in that it, itself, determines the approximate solution (P1-A) and sets such in the place of a detailed calculation (P1-C) determined with the processor.

Abstract: A measurement transmitter for providing a measured value to a control system, comprising: a sensor having a transducer for outputting a primary signal dependent on the measured value; a first electronic circuit for processing the primary signal to an intermediate signal; a second electronic circuit for processing the intermediate signal to a signal representing the measured value, wherein the second electronic circuit has a signal output for outputting the signal to connection lines; a housing arrangement having a metal material, wherein the first electronic circuit has at least a first circuit carrier, and the second electronic circuit has at least a second circuit carrier, and wherein the first and second electronic circuits are positioned in the housing arrangement spaced from one another. Electrically conducting shielding and high frequency filters for protecting against HF disturbances, which can get into the housing arrangement via the connection lines.

Abstract: A method which allows especially the extrapolation of the measured value at the upper and lower end of a measuring range where normally no direct measurement range where normally no direct measurement is possible by superposition of interfering signals, for example by reflection on a radar antenna. In the presence of strong interference signals, for example by reflection of a radar antenna. In the presence of strong interference signals, which are for example caused by the natural resonance of the container or neck in which the measuring device is mounted, the direct level indicator signal can be regularly used if it has a high amplitude caused by a superposition with the interfering signal lies between two interfering signals and does not extend beyond these, the level indicator value can be interpolated by the shift of the signals from the point of reflection.