Patent ID: 8200450

Claim:
A measuring system for measuring a density of a medium, said medium flowing in a process line along a flow axis of the measuring system and said medium being variable as regards a thermodynamic state, 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 the temperature sensor and with the pressure sensor, wherein: with application of the temperature measurement signal, the pressure measurement signal, and at least one numerical compensation factor, K, said measuring electronics produces at least one density measured-value, X ρ , representing, instantaneously, a local density of the flowing medium at a virtual density measuring point, said compensation factor, K, corresponding with at least one of: a spatial variance of at least one thermodynamic variable of the medium, occurring along the flow axis of the measuring system, and a spatial variance of the Reynolds number of the flowing medium along the flow axis of the measuring system.