| 摘要 |
Flow sensor device (10) that comprises a first flow sensor arrangement (11) for intermittently measuring a flow rate ( R ) of a fluid (g) and a second sensor (12) for measuring a parameter (P) indicative of said flow rate (R) or of a change in said flow rate (R). The flow sensor device (10) further comprises a control unit (13) that is configured and arranged to receive at least one second measurement signal (S) from said second flow sensor (12), to generate a control signal (C) if the change in said flow rate (R) sensed by the second sensor (12) exceeds a predefined threshold value, and to trigger with said control signal ( C ) a measurement with said first flow sensor arrangement (11). The second sensor (12) uses less energy for the measurement than the first flow sensor arrangement (11) does. |
