| 摘要 |
Ultrasonic device for measuring a fluid flow rate. A fluid flow rate measuring device is described, which comprises a pipe (26, 60) with an inlet opening (20) and an outlet opening (22) for transporting a fluid, and transducers for transmitting and receiving acoustic signals (34, 36, 66, 68), each transducer being associated with one of the openings. The device is characterised in that one or more elements (40, 42, 50, 52) of a sound wave transparent material are arranged between one of the transducers and the corresponding opening in the pipe, and are shaped in such a way as to channel the fluid flow. |
