Clamp-on ultrasonic volume throughput measuring device

摘要: In order for this measuring device to operate automatically on either one or the other principle depending a selectable foreign body proportion, it has first pair of ultrasound transducers (2, 3), which is operated as transmission and reception transducer vice versa are axially parallel staggered outer wall pipe (1) through fluid flows arranged at an angle different from 90° between direction axis. There second (4, 5), each simultaneously along « A driver/evaluation electronic system supplies consecutively only (2 3) with pulse burst measures running time in forward reverse flow ultrasonic signals spreading reflected determines volume rate therefrom 5) reflection bodies inside received these by correlating their difference thus rate. An switchover (13) threshold switch (131) switches correlation mode dependently upon output signal switch.