Abstract: A device for determining the fill level of a medium in a container has at least one electronic device and at least one signal conductor arrangement. The electronic device supplies the signal conductor arrangement with electromagnetic signals. To provide a device for determining the fill level that is advantageous compared to the prior art, the signal conductor arrangement has several emitting devices for emitting the electromagnetic signal. A support element that can be inserted in a wall of the container supports the signal conductor arrangement.

Abstract: A method for determining the fill level of a medium (2) in a container (3) that is advantageous as compared to the prior art is achieved in that several emitting devices (6) are supplied with electromagnetic signals and that an emitting behavior of at least a portion of the emitting devices (6) is evaluated in view of the fill level of the medium (2).

Abstract: A method for generating an output signal and measuring arrangement for determining at least one measured variable use at least one sensor device (2) and at least one signal output (3) for outputting at least one output signal, wherein the output signal transmits information about the measured variable and/or a state of the measuring arrangement using at least one predetermined value of the current. The measuring arrangement ensures reliable outputting of an error signal indicating the presence of an erroneous state is achieved in that a first adjusting unit (4) and a second adjusting unit (5) are provided that set the value of the current of the output signal to a predetermined desired value. The first adjusting unit (4) sets a fixed current value and the second adjusting unit (5) sets a variable current value.

Abstract: A positioning for positioning a measuring element (2) and a measuring device with such a positioning device have an object of providing a positioning device for positioning a measuring element or a measuring device with a measuring element and a positioning device that is a simplification compared to the prior art and that meets the requirements for positioning with respect to accuracy and reproducibility. The object is met in the positioning device in that three wheels are provided (3, 4, 5), which are designed as a ring gear (3), a sun and a planetary gear (5). The ring has an interior space (6) in which the sun and the planetary are arranged. Furthermore, the planetary is engaged with the sun and with the ring gear (3).

Abstract: A method for monitoring a transmitter that has a measurement unit and a transmission unit which are interconnected to each other in order to transmit signals. There is at least one connecting line for supplying power to the measurement unit which determines a measurement quantity and generates a measurement signal which is dependent on it. The transmission unit receives the measurement signal from the measurement unit, and based on the measurement signal, transfers an output signal to at least one signal transmission element. To provide a method for monitoring a transmitter which allows reliable displaying of an error as easily as possible and the shifting of the transmitter into a secured state, in the case in which the measurement unit detects the presence of an error state, the measurement unit acts on the connecting line.

Abstract: A magnetic field generator (1) of a magnetic-inductive flowmeter for generating an alternating magnetic field running at least also perpendicular to the longitudinal axis of a measuring tube, wherein at least one field coil (2), a current regulator (3), a switching bridge (4) and a microcontroller (5) all form part of the magnetic field generator (1). Two different coil voltages are provided for the coil power supply, namely an initial voltage and a lower operating voltage, and a voltage selector (6) is provided for switching from the initial voltage to the operating voltage—and vice versa.

Abstract: A method for operating a Coriolis mass flow measuring device having at least one measuring pipe through which a medium flows, at least one vibration generator, at least a first vibration sensor, at least a second vibration sensor and at least a control and analyzing unit. The detection of measurement variables or diagnosis parameters is achieved with increased accuracy and security in that the control and analyzing unit calculates, at least indirectly and in a ratiometric manner, at least a derived secondary variable based on a primary measurement, wherein interested primary measurement signals are transmitted alternately to the control and analyzing unit via different measurement channels and wherein, based on the various values obtained from the different measurement channels regarding the primary measurement signals, compensation values of the transmitted primary measurement signals are calculated and used as a basis for the calculation of the derived secondary variable.

Abstract: A method for connecting a field device (1) to an operating unit (2), and a field device (1) for use therewith, via which a connection between a field device and an operating unit can be implemented when the field device is mounted at a location that is difficult to access is achieved in that a query signal is transmitted to the field device (1) by the operating unit (2) and that a response signal is generated by the field device (1) as a reaction to the query signal, in that the field device (1) generates a blinking display and/or a change in color of the display and/or an acoustic signal and/or a change in an acoustic signal.

Abstract: Pressure-drop device, useful for gas chromatographs or mass spectrometers, containing a planar base plate, a cover plate, a gas inlet opening, and a gas outlet opening, which are connected by a capillary groove, wherein the capillary groove is embodied as an etched groove or pressed groove in the base plate and covered by the cover plate and wherein a plurality of pressure-drop devices can be connected to form a module.

Abstract: A housing arrangement for a flow meter that has at least one housing (2) and at least one display device (3) which is located on the housing (2). The maintenance effort for the flow meter is reduced by there being at least one photovoltaic cell on the housing in a manner configured and arranged surrounding the at least one display device.

Abstract: A method for testing of a measuring device arrangement (1), the measuring device arrangement (1) comprising a measuring device (2) which, based on the determination of a measured quantity, generates an output signal which can be tapped from a pick-off site (3) as a pick-off signal. A method for monitoring a measuring device arrangement is devised that constitutes an inline test that does not interrupt the measurement or the transfer of the measured values is achieved in that an action is applied to the measuring device (2) such that the measuring device (2) generates a test signal as the output signal, and that the output signal and/or a signal which is dependent on it is influenced such that the pick-off signal is a definable setting signal.

Abstract: An electronic oscillator of a circuit arrangement for creating microwave oscillations with two transistors as amplifier elements and with a resonator (4), wherein the resonator has two emitter impedance networks, the base impedance network and/or an emitter impedance network or both emitter impedance networks can be put out of tune and the transistors each have a parasitic base collector capacitance. The repercussion of the load on the electronic oscillator (“load-pulling”) is greatly reduced so as to be eliminated as much as possible, in that a compensation capacitance is switched between the collector of the first transistor and the base of the second transistor as well as between the collector of the second transistor and the base of the first transistor, and the compensation capacitances are implemented by reverse-biased pn-junctions.

Abstract: A method for operating a measuring site (1), wherein a measured variable is determined by a sensor (5) that can be calibrated and in which an exact as possible planning of activities, to which, for example, calibration or sensor replacement belong, is possible is obtained, in accordance with the method, in that the sensor (5) is calibrated at presettable calibration points in time, that at least one parameter in conjunction with calibration is stored as a part of reference data of the sensor (5) and that at least one aging-dependent variable of a sensor (8, 6) differing from the sensor (5) is estimated based on reference data of the sensor (5).

Abstract: A magnetic flowmeter (8) for measuring the flow of a flowing medium having a measuring tube (1) with a cross section that changes along its length and preferably the cross section in the middle section of the measuring tube (1) is less than at the beginning and end of the measuring tube (1), preferably the cross section of the measuring tube (1) is rectangular in its middle section and wherein the housing (2) preferably has a circular cross section. The inlet section (5) of the measuring tube (1) is formed of two segments (5a and 5b), of which a first segment (5a), in terms of flow direction, has a cross section that increases in the direction of flow and a downstream adjoining second segment (5b) has a cross section that decreases in the direction of flow. Optionally, the outlet section (6) is similarly formed of two sections (6a, 6b).

Abstract: A method for operating a magnetic-inductive flow meter in which the presence of a parasitic magnetic field is detected energizing of electromagnets with at least one first current value and at least one second current value. The measuring apparatus determines first and second measured values from energizing of the electromagnets with the first and second measured values and a first pair of measured values is formed from the first current value and the first measured value and a second pair of measured values is formed from the second current value and the second measured value, the correspondence of the pairs of measured values and of the function of permeability is determined. If correspondence of the pairs of measured values and of the function of permeability is not found that fact is signaled, the lack of correspondence being due to the at least partial presence of a parasitic magnetic field.

Abstract: A microwave module 1 for a fill level measuring device 2 operating with the runtime method, has a chip for generating and/or receiving microwave signals and a carrier element. To provide an advantageous as possible microwave module, the chip is located in a cavity 9 of the carrier element 8.

Abstract: A field device (1) having a switching converter circuit (2) and a measuring circuit (3) for determining at least one measuring variable. The switching converter circuit (2) is supplied with electric power on the input side and the switching converter circuit (2) is connected to the measuring circuit (3) on the output side and the switching converter circuit (2) supplies the measuring circuit (3) with electric power. The problems associated with changing interfering signals due to the switching converter circuit are reduced in that a load circuit (5) is actuated by a load control circuit (6) so that the output-side electric load at the switching converter circuit (2) does not fall below a minimum electric load.

Abstract: Method for operating a resonant measurement system, especially a Coriolis mass flow meter, so as to be excitable in a linear operating range, the driving terminal current triggered by an electric excitation signal and the driving terminal voltage of the electromagnetic drive triggered by the electric excitation signal are measured. The driving power is determined from the driving terminal current and the driving terminal voltage, and if the driving terminal current exceeds a given maximum driving terminal current, and/or if the driving terminal voltage exceeds a given maximum driving terminal voltage and/or if the driving power exceeds a given maximum driving power, the electric excitation signal is limited to a threshold value such that the driving terminal current remains below the given maximum driving terminal current, and/or the driving terminal voltage remains below the given maximum driving terminal voltage, and/or the driving power remains below the maximum driving power.

Abstract: A method for determining the fill level of a medium, wherein a transmission signal is transmitted, a return signal is received, and the return signal is evaluated in view of the process variable in a manner which allows a general and flexible handling of interfering signals in the received signals. This result is obtained by filtering at least one of the return signal, a signal derived from the return signal and an envelope curve formed from the return signal into at least one sub-signal, and using said at least one sub-signal for evaluating the return signal for at least determining the fill level.

Abstract: A magneto-inductive flowmeter having at least one measuring tube for the flow of an electrically conducting medium, having at least one magnetic field generator for generating a preferably alternating magnetic field running at least also perpendicular to the longitudinal axis of the measuring tube, having at least two measuring electrodes—in particular in contact with the medium—and having a functional unit containing at least one evaluation unit and a method of operating same. The magneto-inductive flowmeter is user-friendly in a very particular manner, namely in that the functional unit has a request initiator that can be activated—by the user or the flowmeter itself—, a contacting receiver and an information sender and that by the request initiator, a third party can be prompted—by the user or the flowmeter itself—into contact—with the user or with the flowmeter itself.