| Patent application number | Description | Published |
|---|
| 20090013798 | Measuring system for a medium flowing in a process line - 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 therefor: At least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, θ, 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; at least one flow sensor placed at a flow measuring point, reacting primarily to a local flow parameter, especially a flow velocity, a volume flow or a mass flow of the medium to be measured, especially also changes of such, especially a flow parameter averaged over a cross section of the process line, and delivering at least one flow measurement signal influenced by the local flow parameter; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor. The measuring electronics produces, with application both of the temperature measurement signal as well as also the pressure measurement signal, as well as also the flow measurement signal, at least at times, at least one density measured-value, especially a digital, density measured-value, representing, instantaneously, a local density, ρ, which the flowing medium has at a virtual density measuring point, especially a virtual density measuring point predeterminably spaced from the pressure measuring point and/or from the temperature measuring point along the flow axis. | 01-15-2009 |
| 20090038405 | Measuring system for a medium flowing in a process line - 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, θ, 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. The measuring electronics ascertains, with application both of the temperature measurement signal as well as also at least the pressure measurement signal, a provisional density measured value, which represents a density, which the flowing medium only apparently has at a virtual density measuring point, especially a virtual density measuring point predeterminably spaced from the pressure measuring point and/or the temperature measuring point along the flow axis. Additionally, the measuring electronics produces, with application of the provisional density measured value as well as at least density correction value determined at run-time and dependent both on a flow velocity of the medium as well as also on the local temperature reigning at the temperature measuring point, at least at times, at least one density measured value, especially a digital density measured value, differing from the provisional density measured value and instantaneously more accurately representing than the provisional density measured value a local density, ρ, which the flowing medium actually has at the virtual density measuring point. | 02-12-2009 |
| 20090038406 | Measuring system for a medium flowing in a process line - 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, θ, 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. The measuring electronics produces, with application both of the temperature measurement signal as well as also at least the pressure measurement signal, at least at times, at least one density measured-value, especially a digital, density measured-value, representing, instantaneously, a local density, ρ, which the flowing medium has at a virtual density measuring point, especially a locationally fixed, virtual density measuring point, predeterminably spaced from the pressure measuring point and/or from the temperature measuring point, along the flow axis. | 02-12-2009 |
| 20090049925 | Measuring system for a medium flowing in a process line - 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, θ, 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. The measuring electronics produces, at least at times, with application both of the temperature measurement signal as well as also at least the pressure measurement signal, as well as with application of at least one numerical compensation factor, especially a digitally stored compensation factor, at least at times, at least one density measured-value, especially a digital, density measured-value, representing, instantaneously, a local density, ρ, which the flowing medium has at a virtual density measuring point, especially a virtual density measuring point predeterminably spaced from the pressure measuring point and/or from the temperature measuring point, along the flow axis. The compensation factor (K) corresponds with a locational variability of at least one thermodynamic variable of the medium, especially a temperature, a pressure or a density, occurring along the flow axis of the measuring system, especially as ascertained in advance and/or during operation, and/or corresponds with a locational variability of the Reynolds number of the flowing medium along the flow axis of the measuring system, especially as ascertained in advance and/or during operation. | 02-26-2009 |
| 20110247430 | MEASURING ARRANGEMENT WITH AN OPTICAL SENSOR - 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. | 10-13-2011 |
| 20110314929 | METHOD AND VORTEX FLOW MEASURING DEVICE FOR MONITORING AND/OR MEASURING WALL FLOW OF A MEDIUM OF TWO OR MORE PHASES FLOWING IN A PIPELINE - 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. In the method, a wall flow of a second phase of a two or more phase medium is detected by the vortex flow measuring device, when a measurement signal which contains characteristic features for an interaction of a wall flow of the second phase of a flowing medium flowing along a wall of the measuring tube with the sensitive section of the first vortex sensor is registered by the vortex sensor. | 12-29-2011 |
| 20110314934 | VORTEX FLOW MEASURING DEVICE FOR MONITORING AND/OR MEASURING FLOW OF DISTRIBUTED PARTICLES AND/OR DROPLETS - 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. | 12-29-2011 |
