VERBESSERUNG FUER EINEN ULTRASCHALL-GAS-/FLUESSIGKEITS-DURCHFLUSSMESSER

摘要

In order to improve a gas/liquid ultrasonic flowmeter, at least one among a plurality of reflecting sites in the ultrasonic path (21) of the working signal in the measurement tube is designed (501, 502, 503) so as to focalize the beam of rays in this radiation path (21) on the surface of the receiving transducer (figure 3). If necessary, the focalizing reflection in the path of the ultrasonic radiation (22) concerns essentially the disturbing fraction of the signal.