Abstract: A transducer apparatus comprises a deformation body as well as, positioned on the deformation body and connected therewith by material bonding, a radio sensor having a surface facing away from the deformation body. The radio sensor is adapted to receive free-space electromagnetic waves and to convert them into acoustic surface waves propagating along the surface facing away from the deformation body, or to convert acoustic surface waves propagating along the surface into free-space electromagnetic waves. Additionally, the deformation body is adapted as a function of a mechanical force acting thereon, and/or as a function of a temperature change, to be at least partially deformed, in such a manner that at least the surface of the radio sensor facing away from the deformation body experiences a shape change influencing a propagation of acoustic surface waves propagating along the surface.

Abstract: A transducer apparatus comprises a deformation body as well as, positioned on the deformation body and connected therewith by material bonding, a radio sensor having a surface facing away from the deformation body. The radio sensor is adapted to receive free-space electromagnetic waves and to convert them into acoustic surface waves propagating along the surface facing away from the deformation body, or to convert acoustic surface waves propagating along the surface into free-space electromagnetic waves. Additionally, the deformation body is adapted as a function of a mechanical force acting thereon, and/or as a function of a temperature change, to be at least partially deformed, in such a manner that at least the surface of the radio sensor facing away from the deformation body experiences a shape change influencing a propagation of acoustic surface waves propagating along the surface.

Abstract: A measuring arrangement for determining flow velocity of at least one liquid phase and/or a gas phase of a vapor or a fluid composed of a liquid and a gaseous phase or a supercritical fluid, comprising a measuring tube, on or in which at least one sensor element of at least a first flow measuring device is arranged for measuring the liquid phase or the gas phase, wherein the measuring tube has at least an inflow region and an outflow region, wherein between these two regions a central region is arranged, whose measuring tube cross section has a greater area than the area of the measuring tube cross section of the outflow region or of the inflow region, and method for ascertaining flow of phases of a vapor or of a fluid composed of a liquid and a gaseous phase, or a supercritical fluid.

Abstract: An apparatus for early warning against condensation induced hydraulic shock in a pipe, conveying a fluid present at least in a first part in the vapor phase and, in the case of condensate formation, in a second part in the form of a condensate, comprising at least two temperature sensors, which are arranged in the pipe and, thus, are fluid contacting, and at least one electronics unit, wherein the first temperature sensor is so arranged that it measures the temperature of the vapor, wherein the second temperature sensor is so arranged that it measures the temperature of the condensate, wherein the at least one electronics unit is so embodied that it ascertains the temperature difference between the temperature of the vapor and the temperature of the condensate, and, upon reaching a predetermined limit value for the temperature difference, generates a report.

Abstract: A measuring arrangement for determining flow velocity of at least one liquid phase and/or a gas phase of a vapor or a fluid composed of a liquid and a gaseous phase or a supercritical fluid, comprising a measuring tube, on or in which at least one sensor element of at least a first flow measuring device is arranged for measuring the liquid phase or the gas phase, wherein the measuring tube has at least an inflow region and an outflow region, wherein between these two regions a central region is arranged, whose measuring tube cross section has a greater area than the area of the measuring tube cross section of the outflow region or of the inflow region, and method for ascertaining flow of phases of a vapor or of a fluid composed of a liquid and a gaseous phase, or a supercritical fluid.

Abstract: An apparatus for early warning against condensation induced hydraulic shock in a pipe, conveying a fluid present at least in a first part in the vapor phase and, in the case of condensate formation, in a second part in the form of a condensate, comprising at least two temperature sensors, which are arranged in the pipe and, thus, are fluid contacting, and at least one electronics unit, wherein the first temperature sensor is so arranged that it measures the temperature of the vapor, wherein the second temperature sensor is so arranged that it measures the temperature of the condensate, wherein the at least one electronics unit is so embodied that it ascertains the temperature difference between the temperature of the vapor and the temperature of the condensate, and, upon reaching a predetermined limit value for the temperature difference, generates a report.

Abstract: A vortex flow measuring device of process automation for ascertaining a process variable, a property of a medium and/or a composition of a medium, comprising at least one sensor unit and one display unit. The sensor unit and the display unit are arranged spatially separated from one another, wherein the display unit and the sensor unit are provided with one or more communication means, which are designed for establishing a wireless data transfer route between the display unit and the sensor unit. At least the communication means of the sensor unit is operated by means of an energy harvester.

Abstract: A vortex flow measuring device as well as a method for determining by means of a vortex, flow measuring a device, which has a bluff body protruding into the flowing medium and a vortex sensor, the mass flow ratio (x) of an at least at times two- or multiphase medium flowing in a measuring tube and having a gaseous first phase flowing with a first mass flow rate {dot over (m)}G and a liquid second phase flowing with a second mass flow rate {dot over (m)}L.

Abstract: A method for monitoring and/or measuring an, at least at times, two-phase medium flowing in a pipeline, and having a first phase, especially a gaseous first phase, with a first density and a second phase, especially a liquid second phase, having a second density different from the first density. The method is performed with a vortex flow measuring device, which has at least one measuring tube inserted into the pipeline, a bluff body and a vortex sensor. In such case, the vortex sensor includes a sensitive section that responds to pressure fluctuations, and that is arranged at least partially adjoining the wall of the measuring tube.

Abstract: A vortex flow measuring device for monitoring and/or measuring an, at least at times, two phase medium flowing in a pipeline; wherein the medium has a first phase, especially a gaseous, first phase, with a first density and a second phase, especially a particle or droplet shaped, second phase, having a second density different from the first density; and wherein the vortex flow measuring device has at least a measuring tube, which can be inserted in a pipeline, a bluff body, and a vortex sensor, which responds to pressure fluctuations. The vortex flow measuring device additionally includes an acoustic transducer, which is formed integrally in a component, especially the bluff body, which protrudes into a flow path within the measuring tube, or is acoustically coupled to such component in such a manner that acoustic signals produced by impact of particles and/or droplets of the second phase on the component are transducible to electrical signals by the acoustic transducer.

Abstract: A measuring arrangement for determining a chemical and/or physical, measured variable-especially a volume flow and/or mass flow-of a measured material flowing through a pipeline, wherein the measuring arrangement comprises a measuring transducer, wherein the measuring transducer includes at least one optical waveguide, which serves for producing, registering and/or transmitting measurement signals, and wherein the registering of the measuring signals in the optical waveguide occurs by means of a Fabry-Pérot sensor.

Abstract: A method for monitoring and/or measuring an, at least at times, two-phase medium flowing in a pipeline, and having a first phase, especially a gaseous first phase, with a first density and a second phase, especially a liquid second phase, having a second density different from the first density. The method is performed with a vortex flow measuring device, which has at least one measuring tube inserted into the pipeline, a bluff body and a vortex sensor. In such case, the vortex sensor includes a sensitive section that responds to pressure fluctuations, and that is arranged at least partially adjoining the wall of the measuring tube.

Abstract: A vortex flow measuring device for monitoring and/or measuring an, at least at times, two phase medium flowing in a pipeline; wherein the medium has a first phase, especially a gaseous, first phase, with a first density and a second phase, especially a particle or droplet shaped, second phase, having a second density different from the first density; and wherein the vortex flow measuring device has at least a measuring tube, which can be inserted in a pipeline, a bluff body, and a vortex sensor, which responds to pressure fluctuations. The vortex flow measuring device additionally includes an acoustic transducer, which is formed integrally in a component, especially the bluff body, which protrudes into a flow path within the measuring tube, or is acoustically coupled to such component in such a manner that acoustic signals produced by impact of particles and/or droplets of the second phase on the component are transducible to electrical signals by the acoustic transducer.

Abstract: A measuring arrangement for determining a chemical and/or physical, measured variable-especially a volume flow and/or mass flow-of a measured material flowing through a pipeline, wherein the measuring arrangement comprises a measuring transducer, wherein the measuring transducer includes at least one optical waveguide, which serves for producing, registering and/or transmitting measurement signals, and wherein the registering of the measuring signals in the optical waveguide occurs by means of a Fabry-Pérot sensor.

Abstract: A measuring system serves for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible. The measuring system includes at least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, ?, of medium flowing past, and delivering at least one temperature measurement signal influenced by the local temperature of the medium to be measured; at least one pressure sensor placed at a pressure measuring point, reacting primarily to a local, especially a static, pressure, p, of medium flowing past, and delivering at least one pressure measurement signal influenced by the local pressure, p, in the medium to be measured; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor.

Abstract: A measuring system for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible. The measuring system includes at least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, ?, of medium flowing past, and delivering at least one temperature measurement signal influenced by the local temperature of the medium to be measured; at least one pressure sensor placed at a pressure measuring point, reacting primarily to a local, especially a static, pressure, p, of medium flowing past, and delivering at least one pressure measurement signal influenced by the local pressure, p, in the medium to be measured; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor.

Abstract: A measuring system for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible. Included are: at least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, ?, of medium flowing past, and delivering at least one temperature measurement signal influenced by the local temperature of the medium to be measured; at least one pressure sensor placed at a pressure measuring point, reacting primarily to a local, especially a static, pressure, p, of medium flowing past, and delivering at least one pressure measurement signal influenced by the local pressure, p, in the medium to be measured; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor.

Abstract: A measuring system for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible.

Abstract: A method for signal processing of measurement signals of a vortex flow transducer for measuring flow of a medium through a measuring tube. The method is characterized by low needs as regards computing power and memory space. The transducer includes a bluff body arranged in the measuring tube and a sensor for registering pressure fluctuations arising at the bluff body and for converting such pressure fluctuations into an electrical measurement signal. In the method, at least a portion of the measurement signal is sampled and digitized, an autocorrelation of the digitized measurement signal is calculated, and the flow is derived on the basis of at least one characteristic of the autocorrelation.

Abstract: A vortex flow pickup serves for measuring mass flow, volume flow or flow velocity of a fluid which is flowing in a measuring tube having a tube wall, and has a temperature sensor arranged in such a way that the vortex flow pickup may also be used together with those fluids which corrode the temperature sensor. A bluff body which produces vortices, and consequently pressure fluctuations, is arranged in the measuring tube. A vortex sensor responding to these pressure fluctuations is fitted downstream of the bluff body in a bore of the tube wall of the measuring tube. The vortex sensor comprises a diaphragm which covers the bore and on which a sensor vane protruding into the fluid is fastened. The temperature sensor is fixed on the bottom of a blind hole of the sensor vane. On the side of the diaphragm lying opposite the sensor vane, a sensor element is fastened. The temperature sensor may alternatively be arranged in a longitudinal bore of the bluff body.