Title :
Acoustic transfer function of the clamp-on flowmeter
Author :
Funck, Bernhard ; Mitzkus, Andreas
Author_Institution :
FLEXIM GmbH, Berlin, Germany
fDate :
7/1/1996 12:00:00 AM
Abstract :
An angular spectrum approach is used to derive the acoustic transfer function of the clamp-on flowmeter. The flowmeter factor is calculated as a function of the position of the transducers by numerical evaluation of the transmission function. This method enables high measurement accuracy even in the case of the practically unavoidable mispositioning of the transducers. Simulations and measurement results show the influence of the transducer aperture and the pipe wall on the flowmeter factor.
Keywords :
flow measurement; flowmeters; pipe flow; ultrasonic measurement; ultrasonic transducers; acoustic transfer function; angular spectrum approach; clamp-on flowmeter; flowmeter factor; measurement accuracy; mispositioning; numerical evaluation; pipe wall; transducer aperture; transmission function; ultrasonic transducers; Acoustic measurements; Acoustic propagation; Acoustic transducers; Apertures; Fluid flow measurement; Frequency domain analysis; Transfer functions; Ultrasonic transducers; Ultrasonic variables measurement; Wavelength measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
