| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid flow measurement system capable of obtaining gas flow simply with nondestructive to existing gas meters and existing gas pipes.SOLUTION: The fluid flow measuring system 1 includes a magnetic sensor 111 for detecting leakage magnetic field outside a fluid passage, based on magnetic member oscillating periodically while correlating with flow rate; a storage means 133 for storing the detection data of the magnetic sensor 111; a fluctuation component extraction means 21 for extracting frequency components corresponding to periodic oscillation of the magnetic member among the detection data; and a flow-rate calculating means 23 for calculating the flow rate of fluid using the frequency component and the correlation. |
