A nonintrusive flow sensing system (10) and related method are provided for monitoring fluid flow within a conduit (14), particularly such as a liquid flow (12). The sensing system (10) includes an array of ultrasonic transducers (18, 20, 24, 26) mounted on the conduit (14) and adapted to send and receive...http://www.google.fr/patents/US5040415?utm_source=gb-gplus-shareBrevet US5040415 - Nonintrusive flow sensing system
