| 摘要 |
<p>A fluid flow meter comprises a pair of transducers (1, 2) spaced apart in the direction of fluid flow. A transmitter (13) is connected by a first electrical circuit to the transducers (1, 2) for causing acoustic signals to be transmitted in both directions through the fluid by the transducers. A processor (13) is connected to the transducers (1, 2) by a second electrical circuit for determining information relating to the fluid flow by monitoring the time of flight of acoustic signals received by the transducers. The processor (13) is arranged to monitor the time of flight of acoustic signals transmitted between the transducers along first and second different acoustic paths passing through the fluid.</p> |
