Patent ID: 8738305

Claim:
A method for detecting blockage of a measuring tube of a Coriolis flow measuring device, said Coriolis flow measuring device being insertable into a pipeline and embodied in such a manner that, by it, a physical measured variable of a fluid flowing in the pipeline is ascertainable, and Coriolis flow measuring device including at least two measuring tubes, into which a fluid flowing in the pipeline is dividable, said method comprising: exciting the at least two measuring tubes by at least one exciter to execute mechanical oscillations; registering mechanical oscillations of the measuring tubes and producing by at least one sensor at least one measurement signal representing the mechanical oscillations; analyzing at least one produced measurement signal for the occurrence of a deviation of a resonance frequency of one measuring tube relative to a resonance frequency of the at least one other measuring tube; and establishing blockage of a measuring tube in the case of occurrence of such a deviation.