Abstract: A method for determining and/or monitoring a predeterminable fill level of a medium in a containment with a sensor having a sensor unit with a mechanically oscillatable unit in the form of an oscillatory fork and at least one piezoelectric element comprises exciting the sensor unit with an excitation signal such that mechanical oscillations are executed, receiving the mechanical oscillations of the sensor unit and converting such into a first received signal, transmitting a transmitted signal from the sensor unit and receiving a second received signal and ascertaining information concerning the predeterminable fill level of medium in the containment based on the first received signal. Information concerning state of the sensor unit is ascertained based on the second received signal.

Abstract: An apparatus for determining and/or monitoring a process variable of a medium comprises a sensor unit having a mechanically oscillatable unit and a first piezoelectric element, wherein the piezoelectric element is in an internal volume of the oscillatable unit, wherein the apparatus is embodied to excite the mechanically oscillatable unit using an excitation signal such that mechanical oscillations are executed, to receive the mechanical oscillations of the oscillatable unit and to convert them into a first received signal, and, based on the first received signal, to determine and/or to monitor the at least one process variable. A coupling element is arranged in the internal volume in such a manner that the coupling element is in mechanical contact with the piezoelectric element.

Abstract: The present disclosure relates to a measuring arrangement comprising a containment for a medium as well as to a measuring device for registering a property of the medium. The containment and/or the measuring device have/has, in each case, at least one apparatus, which apparatus includes a window to a lumen of the containment, wherein the window comprises a dielectric material, such as, for example, a glass or a ceramic, wherein the apparatus includes a ferromagnetic marking, which is adapted in case of a partial failure of the window to shed pieces into the medium, wherein a detector for detecting ferromagnetic materials is provided and adapted to check for presence of marking particles in the medium.

Abstract: Disclosed is a method for determining and/or monitoring at least two different process variables of a medium, wherein a sensor unit is excited to vibrate mechanically by means of an excitation signal, the mechanical vibrations are received from the sensor unit and are converted into a first reception signal, the sensor unit emits a transmission signal and receives a second reception signal, and a first process variable is determined on the basis of the first reception signal and a second process variable is determined on the basis of the second reception signal. Disclosed also is an apparatus configured to carry out a method according to the invention.

Abstract: A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a temperature detection unit for determining and/or monitoring a temperature of the medium and an electronics unit. The device is embodied to excite the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit and convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable and, based on a third received signal received from the temperature detection unit, to determine the temperature of the medium.

Abstract: A sensor arrangement for determining a process variable of a medium in a containment comprises a sensor apparatus, a magnetic field apparatus, and a detection apparatus. The magnetic field apparat produces a magnetic field that penetrates the sensor apparatus, the detection apparatus and partially the medium. The sensor apparatus is embodied such that a magnetic property of a component of the sensor apparatus depends on the process variable, and the magnetic field of the magnetic field apparatus is influenceable by the sensor apparatus as a function of process variable. The detection apparatus is embodied to register a variable related with the magnetic field, especially the magnetic flux density, the magnetic susceptibility or the magnetic permeability, and, based on that variable, to determine the process variable. The sensor apparatus is arranged within an internal volume of the containment and the detection apparatus is arranged outside of the containment.

Abstract: Disclosed is a pressure gauge comprising a pressure sensor, a pressure transmitter connected upstream of the pressure sensor and having an isolation diaphragm, the outer side of which can be supplied with pressure and under which a pressure receiving chamber is enclosed, and comprising a hydraulic pressure transmission path connected to the pressure receiving chamber and filled with a pressure transmitting fluid. The diaphragm seal comprises a deflection device actuated by a controller connected to the pressure sensor and/or to a temperature sensor, and which is designed to exert a force on the isolation diaphragm, or on an element connected to the isolation diaphragm, said force deflecting the isolation diaphragm in the direction of its diaphragm bed, at times that are determined by the controller and that are based on a pressure measured continuously by the pressure sensor and/or a temperature measured continuously by the temperature sensor.

Abstract: A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a pressure detection unit for determining and/or monitoring a pressure, and an electronics unit. The device is embodied to excite the mechanically oscillatable unit using an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit, to convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable of the medium.

Abstract: A computer-implemented method for controlling and/or monitoring yeast propagation includes providing a mixture of yeast cells and wort, determining an original gravity of the wort or of the mixture and a temperature of the mixture at a start time, and calculating a theoretical end time for the yeast propagation on the basis of a logistic propagation model for the yeast propagation, on the basis of the original gravity and on the basis of the temperature at the start time.

Abstract: Disclosed is a pressure gauge comprising a pressure sensor and a pressure transmitter connected upstream of the pressure sensor and having an isolation diaphragm enclosing a pressure receiving chamber. A hydraulic pressure transmission path is connected to the pressure receiving chamber and is filled with a pressure transmitting fluid that transmits the pressure acting on the outer side of the isolation diaphragm to the pressure sensor The pressure gauge allows functional impairments of the pressure gauge to be detected early without having to change the pressure acting on the outer side of the isolation diaphragm. The pressure transmitter comprises an electronically activatable deflection device which is designed in such a way that, when activated, it exerts a constant force deflecting the isolation diaphragm, on the isolation diaphragm, or on an element connected to the isolation diaphragm.

Abstract: The present disclosure relates to a method for determining at least one process variable of a medium. The method includes steps of recording a first value for the process variable by means of a first method for determining the process variable and recording a second value for the process variable by means of a second method for determining the process variable. The method also includes steps of selecting at least one of the detected values for the process variable by means of a classifier and outputting the selected value for the process variable. The present disclosure further relates to a computer program designed for executing a method according to the present disclosure, and to a computer program product having a computer program according to the present disclosure.

Abstract: A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

Abstract: A device for determining and/or monitoring at least one process variable of a medium includes a mechanically vibratable unit, a drive/receiver unit and an electronic unit. The drive/receiver unit is designed to excite the mechanically vibratable unit to produce mechanical vibrations using an electrical excitation signal, and to receive the mechanical vibrations of the mechanically vibratable unit and convert them into an electrical reception signal. The electronics unit is designed to generate the excitation signal on the basis of the received signal, to set a frequency of the excitation signal in such a way that there is a predeterminable phase shift between the excitation signal and the received signal, and to determine the at least one process variable on the basis of the received signal, the mechanically vibratable unit comprising a diaphragm, and a surface of the diaphragm facing the process being curved.

Abstract: A device for determining and/or monitoring at least one process variable of a medium in a container includes four, rod-shaped elements arranged on a membrane, three piezoelectric elements and an electronics system, wherein one first and one second rod-shaped element are arranged and configured such that they form a mechanically vibratable unit, wherein the device is configured to excite the vibratable unit via an excitation signal to create mechanical oscillations, to receive the mechanical oscillations of the vibratable unit, to convert them into a first received signal, to transmit a transmitted signal, and to receive a second received signal, and wherein the electronics system is configured to determine the at least one process variable based on the first and/or second received signal.

Abstract: A field device for processing and automation technology includes a first and a second component that can each be mechanically connected at a joining surface by means of a joining point. Two metal surface layers are each applied at least to the joining surface of the first component and the joining surface of the second component. The metal of the surface layers is different from the metal of the first and/or the metal of the second component. A joining material is applied between the respective joining surfaces of the two components, wherein the joining material includes particles at least partially consisting of a metal that corresponds with the metal of the surface layers The joining of the two components occurs at a joining temperature below 300° C.

Abstract: A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a temperature detection unit for determining and/or monitoring a temperature of the medium and an electronics unit. The device is embodied to excite the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit and convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable and, based on a third received signal received from the temperature detection unit, to determine the temperature of the medium.

Abstract: A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a conductivity/capacitance detecting unit for determining and/or monitoring a conductivity and/or capacitance of the medium and an electronics unit. The device is embodied to excite the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, to receive the mechanical oscillations of the oscillatable unit, to convert them into a first received signal, to transmit a transmitted signal, and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable of the medium.

Abstract: A device and a method for determining and/or monitoring at least one process variable of a medium include a sensor unit having a mechanically oscillatable unit, at least a first piezoelectric element, a pressure detection unit for determining and/or monitoring a pressure, and an electronics unit. The device is embodied to excite the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, to receive mechanical oscillations of the oscillatable unit, to convert them into a first received signal, to transmit a transmitted signal and to receive a second received signal. The electronics unit is embodied, based on the first and/or second received signal, to determine the at least one process variable of the medium.

Abstract: A corrosion protection element is described, with which in simple and cost effective manner a reliable corrosion protection of field devices can be provided, which field devices comprise at least one component of stainless steel in contact with an environment of the field device. Corrosion protection elements of the invention are distinguished by features including that they are embodied as sacrificial anodes comprising iron or rustable steel and have a form, which is embodied in such a manner that they can be applied to the component of the field device in such a manner that the sacrificial anode is in electrically conducting contact with the component.

Abstract: A method for determining and/or monitoring a concentration of maltodextrin and/or maltose in a mashing process comprises method steps as follows: providing a mash, heating the mash to at least one predeterminable temperature, determining the density of the mash determining the velocity of sound in the mash, ascertaining a concentration of maltodextrin and maltose in the mash, and ascertaining the concentration of maltodextrin and/or maltose in the mash.