Ultrasonic vortex shedding

The principal classes of flow-measuring instruments used in the process industries are variable-head, variable-area, positive-displacement, and turbine instruments mass flowmeters vortex-shedding and ultrasonic flowmeters magnetic flowmeters and more recently, Coriolis mass flowmeters. Head meters are covered in detail in Sec. 5. [Pg.59]

Full-bore meters include variable-head meters such as venturi and orifice meters and variable-area meters such as rotameters. These will be described in some detail. Briefer descriptions are given of other full-bore measuring devices V-element, magnetic, vortex shedding, turbine and positive-displacement meters, ultrasonic meters, and mass flow devices such as Coriolis and thermal flowmeters. [Pg.214]