ULTRASONIC FLOWMETER, AND MEASURING METHOD
    2.
    发明公开

    公开(公告)号:EP4439019A1

    公开(公告)日:2024-10-02

    申请号:EP22968742.1

    申请日:2022-12-23

    发明人: YAMADA, Kazuyuki

    IPC分类号: G01F1/66

    CPC分类号: G01F1/66

    摘要: An ultrasonic flowmeter includes a time measurement unit configured to measure a plurality of propagation times from a time point at which an ultrasonic wave starts to be transmitted to each crossing time point at which a reception signal of the ultrasonic wave crosses a reference level after the reception signal crosses a threshold voltage; and a flow rate measurement unit configured to extract, from among the plurality of propagation times, a specific propagation time whose difference from a reference propagation time is within a first predetermined range, and use the specific propagation time to calculate a flow rate of fluid through which the ultrasonic wave propagates.