| 摘要 |
The invention relates to an ultrasonic flow sensor, in particular for measuring the volumetric or mass flow of a fluid (1) in a conduit (3). Said sensor comprises at least one ultrasonic transducer (2a-2n), which emits and receives ultrasonic signals (7). The aim of the invention is to provide an ultrasonic flow sensor that has a particularly simple, cost-effective construction and that functions according to the principle of beam drift. To achieve this, the sensor comprises an array (2), consisting of several ultrasonic transducers (2a- 2n), which is positioned on one side of the conduit (3), a reflection surface (4), which lies opposite the array (2) and by means of which the emitted ultrasonic signals (7) are reflected and a receiver electronics system (6), which evaluates the ultrasonic signal (9) that has been received by the ultrasonic transducers (2a-2n). ® KIPO & WIPO 2007
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