Patent ID: 11946786
Assignee: YOKOGAWA ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A diagnostic method, comprising:
acquiring a magnitude of a combined signal component of each of at least two target detection signals among a plurality of detection signals detected by a vortex flowmeter having a vortex generator and a detection unit configured to detect the plurality of detection signals according to a vortex generated by the vortex generator;
storing a change over an elapse of time of the magnitude of the combined signal component of each of the at least two target detection signals;
predicting a future time that the vortex flowmeter will be abnormal based on a predicted determination result that a normalized magnitude of the combined signal component of the at least two combined signals is greater than a first threshold, and equal to or less than a second threshold; and
diagnosing a condition of the vortex flowmeter using a determination result of the magnitude of the combined signal component of each of the at least two target detection signals.