Abstract: A method for controlling excitation energy in a coil arrangement of a flow measuring device having an energy buffer system for storing energy and embodied as a two-conductor field device is provided for producing a magnetic field B passing through a medium as a function of the excitation energy. The wherein the flow measuring device has a plurality of operating states, between which it transfers and which describe an excitation current pulsed in a time interval.

Abstract: A radio unit RU for field devices used in automation technology can be detachably connected to a field device. Via the radio unit RU, a radio connection to a service unit SU is possible over a radio network. The radio unit RU reads an identifier of the field device F1 from a memory in the field device and uses this identifier to report in the radio network.

Abstract: An ultrasonic flow measurement device for ascertaining flow velocity, respectively volume flow, of a fluid, especially a gas or a liquid, using a travel-time difference method, comprising: a measuring tube having a straight measuring tube axis; at least one transmitter for transmitting an acoustic signal; at least one receiver for receiving the acoustic signal; and at least one reflection surface for reflecting the acoustic signal. The transmitter and the receiver are arranged on the tube wall of the measuring tube in such a manner that they can transmit the acoustic signal inclined or perpendicularly to the flow direction of the fluid, wherein at least one reflection surface is embodied concavely in a preferential direction; and a method for ascertaining flow velocity, respectively volume flow, of a fluid.

Abstract: The viscometer provides a viscosity value (X?) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly, the flow tube is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics which feed an excitation current (iexc) into the excitation assembly. By means of the meter electronics, a first internal intermediate value (X1) is formed, which corresponds with the excitation current (iexc) and thus represents the friction forces acting in the fluid. According to the invention, a second internal intermediate value (X2), representing inhomogeneities in the fluid, is generated in the meter electronics, which then determine the viscosity value (X?) using the two intermediate values (X1, X2).

Abstract: A bolt sleeve for insulating a bolt or machine screw, wherein the bolt sleeve is so embodied that it axially shortens by a predetermined amount in the case of a force of predetermined size acting axially on it, whereupon the bolt sleeve assumes at least partially the shape of a bellows.

Abstract: An ultrasonic transducer, comprising a coupling element which has a first recess, the first recess being provided for the arrangement of a piezoelectric element which feeds an ultrasound signal into the coupling element, and there being disposed between the piezoelectric element and the coupling element an intermediate layer which comprises a metal disc, the metal disc comprising retaining elements each with a first segment lying on the same plane as the metal disc and projecting radially from the perimeter of the metal disc and each having a second segment which adjoins the first segment, projects from the plane of the metal plate and is connected to the first segment.

Abstract: A measuring electronics serves for ascertaining a potential difference (??12) between a first measuring electrode and a second measuring electrode. For such purpose, the measuring electronics comprises a reference electrode, an input circuit having two circuit inputs electrically connectable with the first, respectively second, measuring electrodes and two signal voltage outputs, a compensation circuit, a measuring and control circuit having two signal voltage inputs, two signal voltage inputs electrically and a compensation control output. The compensation circuit is adapted to provide on the first compensation voltage output a compensation voltage, namely an adjustable direct voltage referenced to the reference potential, and on the second compensation voltage output a compensation voltage, namely a direct voltage referenced to the reference potential.

Abstract: A measuring transducer comprises at least one measuring tube for carrying a flowing medium as well as a transducer housing mechanically coupled with the at least one measuring tube. The transducer housing includes: an inner shell forming a cavity accommodating the at least one measuring tube; and an outer cladding formed at least partially by means of yarn, namely cladding placed outside of the cavity and surrounding the inner shell.

Abstract: A sensor module serves for registering a flow velocity and/or a volume flow rate, of a fluid flowing in a pipeline. The sensor module comprises a platform (PS) having, extending therein from an inlet opening to a drain opening remote therefrom and communicating with the lumen of the pipeline, a flow path for guiding a fluid volume portion branched from the fluid flowing in the pipeline and a transducer element for producing at least one sensor signal influenced by the fluid guided in the flow path. The flow path is additionally so embodied that an imaginary central axis (LB) of the intermediate region is not parallel to an imaginary central axis of the intake region and/or not parallel to an imaginary central axis of the drain region.

Abstract: A method for verifying the reliability of ascertained measurement data of an ultrasonic, flow measurement made according to the travel-time difference method, wherein an ultrasonic flow measuring device having at least two ultrasonic transducers is used to transmit and receive ultrasonic signals inclined in or counter to a flow direction of a measured medium. A first ultrasound disturbance signal is registered within a first time window before receiving a first ultrasound wanted signal, which essentially propagates through the measured medium between the transducers. The first ultrasound disturbance signal propagates at least partially in the measured medium between the ultrasonic transducers, wherein a second ultrasound disturbance signal is registered within a second time window before receiving a second ultrasound wanted signal, which essentially propagates through the measured medium between the transducers.

Abstract: A method for manufacturing an ultrasonic, flow measuring device, characterized by method steps as follows: selecting a number larger than one of straight subsections of the first signal path, which should have different distances from the measuring tube axis; establishing the distances of the straight subsections from measuring tube axis; calculating values of lengths of the straight subsections, as projected on the measuring tube axis, as a function of the number of straight subsections with the same distance from the measuring tube axis and the respective distances from the measuring tube axis; and inserting the at least a first reflection surface in the measuring tube such that the acoustic signal on the path from the first transmitter to the first receiver is so reflected on at least the first reflection surface that the first signal path comprises the straight subsections with the selected distances and the calculated values of the lengths as projected on the measuring tube axis.

Abstract: A housing cap comprises: a cap basic body having a cap floor having an opening as well as a surrounding cap lateral wall adjoining an edge of the cap floor. A window pane of a transparent material placed on a side of the cap floor facing toward the cap lateral wall in a manner sealing the opening of the cap floor; as well as a contact disk placed on a side of the window pane facing away from the cap floor. The cap lateral wall includes on an inner side facing the window pane a groove, while the contact disk has a contact region bearing against the window pane as well as an outer edge having formed therein a plurality of teeth, which are in engagement with the groove.

Abstract: A Coriolis mass flow measuring device comprises a measuring device electronics as well as, connected thereto, a measuring transducer comprising at least one measuring tube, an oscillation exciter for oscillating the at least one measuring tube and, mutually spaced along the measuring tube, two oscillation sensors for generating oscillation signals representing oscillations of the measuring tube. The measuring tube is adapted to be flowed through by a medium and during that to be caused to vibrate in such a manner that the measuring tube executes wanted oscillations having a wanted frequency. The wanted oscillations are suitable to induce in the flowing medium, dependent on its mass flow rate, Coriolis forces suitable for bringing about a measurement effect of a first type, namely Coriolis oscillations of the wanted frequency superimposed on the wanted oscillations. These Coriolis oscillations are, in turn, suitable to induce in the medium centrifugal forces dependent on its mass flow rate and on its density.

Abstract: A measuring device for determining and/or monitoring a chemical and/or physical measured variable of process automation technology, wherein the measuring device includes at least one housing, and the housing has at least a first wall; which comprises a first material, and the housing has at least a second wall which comprises at least a second material. The second wall is secured to the first wall; and the outside of the first wall is at least partially surrounded by the second wall. The second wall is approximately fitted to the shape of the first wall, and the second wall is mechanically connected to the first wall.

Abstract: A thermal, flow measuring device and method for measuring the flow of a measured medium. During a heating phase of predetermined length a constant heating current of a first electrical current source flows through a first resistor. During a first measuring phase of predetermined length a constant measurement current of a second electrical current source flows through the first resistor. During the first measuring phase a first voltage falls across the first resistor, wherein during a second measuring phase of predetermined length during the first measuring cycle the constant measurement current of the second electrical current source flows through a second resistor.

Abstract: A circuit arrangement comprises a voltage regulator coupled to an external voltage supply and a control loop associated with the voltage regulator. The control loop includes an electrical current controller for setting the electrical current value, an analog-digital converter, a reference resistor and a computation/control unit coupled with the voltage regulator and the said analog-digital converter, and the control loop is so embodied that the voltage regulator, as a function of the presently set electrical current value, controls a voltage to an external load connected with the electrical current output. Particularly the computation/control unit is adapted to calculate a voltage to be delivered by the voltage regulator and to operate both, the electrical current controller and the voltage regulator for setting the electrical current value and to operate and for tuning the voltage delivered by the voltage regulator as a function of the presently set electrical current value, respectively.

Abstract: An ultrasonic transducer for an ultrasonic flow measuring device, comprising an electromechanical transducer element, which is prestressed against an ultrasonic window of the ultrasonic transducer by a suitable structure, wherein a first surface of the electromechanical transducer element faces the ultrasonic window, and wherein a second surface of the electromechanical transducer element lying opposite the first surface is divided into a plurality of segments, which are galvanically connected with the suitable structure for prestressing.

Abstract: A coil system for a magneto inductive, flow measuring device, which comprises: a coil and core sheets led through the coil. The core sheets have equal shape and size, wherein each core sheet has a first and a second leg, which are connected together to form an L shape. At least a first core sheet and a second core sheet are so led through the coil that the first leg of the first core sheet and the first leg of the second core sheet extend parallel to one another and that the second leg of the first core sheet and the second leg of the second core sheet extend parallel to one another, wherein the second leg of the first core sheet and the second leg of the second core sheet are arranged at different ends of the coil.

Abstract: The present invention relates to a measuring transducer of the vibration-type for a fluid flowing in a flexible hose. The measuring transducer includes, a hose carrier unit, which has at least sectionally a loop-shaped outer contour, around which a flexible hose can be led. Furthermore, the measuring transducer includes a clamping unit, by which a flexible hose led in use around the loop-shaped outer contour is tightenable against the loop-shaped outer contour, at least one exciter coupled to the hose carrier unit, by which the hose carrier unit is excitable to execute mechanical oscillations, which are accompanied by alternating elastic deformation of the hose carrier unit, and at least one oscillation sensor, by which mechanical oscillations of the hose carrier unit and/or a flexible hose installed in use in the measuring transducer are registerable.

Abstract: A temperature sensor and a flow measuring device. The temperature sensor comprising: a housing which comprises a housing body from which at least a first shell and a second shell protrude, each of which shells comprises a first end section, a second end section and a longitudinal axis. A temperature sensor element is arranged, which has especially a thin-film resistance thermometer, wherein one of the temperature sensor elements is heatable, and which shells have outsides, which interface the housing with the environment. From each temperature sensor element at least one connection wire leads away, which is connected with a circuit board. The housing body has a housing chamber, which is connected with inner hollow spaces of the shells, wherein the circuit board is arranged in the housing chamber, and wherein the circuit board is positioned in the housing chamber by a snap-in connection.