A method for improving the measuring precision of a flow measuring assembly in pipelines through which a liquid flows, comprising at least one disturbance point, which influences the flow of a liquid through the pipelines such that a flow measurement of the measuring assembly is impaired, wherein the flow measuring assembly is operatively coupled to a data processing unit and a storage unit, comprising the steps of - selecting a disturbance point in the pipeline and arranging the flow measuring assembly on the pipeline through which a liquid flows at a predetermined distance adjacent to the disturbance point; - using the flow measuring assembly to measure a flow value Q 1, which is a function of the disturbance point, of the liquid flowing through the pipeline at the predetermined distance position at the point in time t; - determining disturbance point parameters, which comprise parameters that change dynamically for each measuring assembly, and parameters that are fixed, and which describe the disturbance point with respect to its shape, type, and dimensions; - using the data processing unit to interpolate an error factor as a numerical function of the disturbance point parameters from the values of the determined disturbance point parameters, thereby calculating the function of the error factor as a function of the fixed disturbance point parameters via a numerical simulation in combination with a neuronal network in order to interpolate the error factor; - numerically determining an actual flow value (Q 2) from the detected flow value Q 1 of the liquid using the error factor; - thereby detecting the flow, which is a function of a disturbance point, at a plurality of disturbance points, which are present along a predetermined pipeline section, and extrapolating each error factor, which is a function of the disturbance point, to form a total factor for this pipeline section; - determining an actual total flow value (Q 3) for the pipeline from the total factor; and - outputting the error factor and the calculated actual flow value (Q 2) for each disturbance point and the total flow value (Q 3) for the pipeline. - selecting a disturbance point in the pipeline and arranging the flow measuring assembly on the pipeline through which a liquid flows at a predetermined distance adjacent to the disturbance point; - using the flow measuring assembly to measure a flow value Q 1, which is a function of the disturbance point, of the liquid flowing through the pipeline at the predetermined distance position at the point in time t; - determining disturbance point parameters, which comprise parameters that change dynamically for each measuring assembly, and parameters that are fixed, and which describe the disturbance point with respect to its shape, type, and dimensions; - using the data processing unit to interpolate an error factor as a numerical function of the disturbance point parameters from the values of the determined disturbance point parameters, thereby calculating the function of the error factor as a function of the fixed disturbance point parameters via a numerical simulation in combination with a neuronal network in order to interpolate the error factor; - numerically determining an actual flow value (Q 2) from the detected flow value Q 1 of the liquid using the error factor; - thereby detecting the flow, which is a function of a disturbance point, at a plurality of disturbance points, which are present along a predetermined pipeline section, and extrapolating each error factor, which is a function of the disturbance point, to form a total factor for this pipeline section; - determining an actual total flow value (Q 3) for the pipeline from the total factor; and - outputting the error factor and the calculated actual flow value (Q 2) for each disturbance point and the total flow value (Q 3) for the pipeline.