Patent ID: 8447536
Filing Date: 2013-05-21
Classification: G01F,G01N

Abstract:
1. A measuring system for measuring a density of a medium being variable as regards a thermodynamic state flowing in a process line along a flow axis of the measuring system, said measuring system comprising: at least one temperature sensor placed at a temperature measuring point, said temperature sensor reacting to a local temperature of a medium flowing past, and said temperature sensor delivering at least one temperature measurement signal influenced by the local temperature of the medium; at least one pressure sensor placed at a pressure measuring point, said pressure sensor reacting to a local pressure of the medium flowing past, and said pressure sensor delivering at least one pressure measurement signal influenced by the local pressure in the medium; and a measuring electronics communicating, with at least the temperature sensor and with the pressure sensor, said measuring electronics calculating, with application of the temperature measurement signal and at least the pressure measurement signal, at least one density measured-value representing, instantaneously, a local density of the flowing medium at a virtual density measuring point predetermineably spaced from the pressure measuring point along the flow axis and/or predetermineably spaced from the temperature measuring point along the flow axis, and said measuring electronics communicating with a superordinated, electronic, data processing system; wherein: said measuring electronics transmits the density measured-value to the data processing system and the measuring electronics receives from said data processing system, at least at times, numerical parameter values for the measuring system parameter specifying medium currently to be measured, said measuring system parameter being selected from a group consisting of: thermodynamic properties of said medium currently to be measured, chemical composition of said medium currently to be measured, a specific heat capacity, c