Self-monitoring flow measurement assembly and method for the operation thereof

Abstract

The invention relates to a self-monitoring flow measurement assembly which provides a high degree of measurement accuracy and reliability, having a pipeline system (1, 1') through which a medium flows, a regulating apparatus (3) inserted in the pipeline system (1, 1') on the inlet side, which varies a flow rate of the total medium flowing into the pipeline system (1, 1') according to a pre-defined, time-dependent, periodic change profile (R), at least one flow measurement unit 5, 5a, 5b, 5c, 5d, 5e) inserted in the pipeline system (1, 1') which is located at a measurement site which is behind the regulating apparatus (3) in the direction of flow and through which the entire medium flowing through pipeline system (1, 1') flows and which measures the flow rate (Q5(t), Q5a(t), Q5b(t), Q5c(t), Q5d(t), Q5e(t)) of the medium at the measurement site, and a monitoring unit (7); which monitors based on the pre-defined, time-dependent change profile (R) and the flow rates (Q5(t), Q5a(t), Q5b(t), Q5c(t), Q5d(t), Q5e(t)) measured at the measurement sites whether the measured flow rates (Q5(t), Q5a(t), Q5b(t), Q5c(t), Q5d(t), Q5e(t)) follow the pre-defined, time-dependent change profile (R) and outputs an error message if at least one of the measured flow rates (Q5(t), Q5a(t), Q5b(t), Q5c(t), Q5d(t), Q5e(t)) deviates from the pre-defined, time-dependent change profile (R).

Description

technical field [0001] The invention relates to a self-monitoring flow measuring device having a piping system through which a medium flows; and at least one flow measuring device installed at a measuring location in the piping system for measuring the medium flow at its measurement location. Background technique [0002] Flow measuring devices are used in many industrial plants, also in the water and sewage industry and in their piping systems, e.g. to measure flow and / or the resulting measured variable for process control or testing leakage. [0003] In the context of process control, control devices such as pumps or valves are adapted to maintain a desired flow or to control a desired flow. These control devices are set to be optimal for a particular plant based on the flow measured by the flow measurement device. [0004] With regard to safety, it is especially important that flow measuring devices operate error-free, and errors that occur in a given situation can be ...

AI Technical Summary

Problems solved by technology

Here, if the measured value could freeze at a value corresponding to the desired value, for example due to a fault in the electronics of the measuring device, it might not be detected for a long time

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