| 摘要 |
The invention relates to a flow measuring device (4) which has a sensor element (11) for outputting a nonlinear signal according to a flow rate. The device (4) comprises: a first signal processing system for obtaining a first signal by filtering the nonlinear signal output from the sensor element (11), thereafter correcting a sensitivity of the filtered signal; a second signal processing system for obtaining a second signal by linearizing the nonlinear signal from the sensor element (11), thereafter filtering the linearized signal and correcting a sensitivity of the filtered signal, and then nonlinearizing the linearized signal with a corrected sensitivity; an amplifier for amplifying a differential signal between the first and second signals; and a correcting section for correcting the nonlinear signal by using the amplified differential signal. |
