Title :
Widebeam ultrasonic flowmeter
Author :
Motegi, R. ; Takeuchi, S. ; Sato, T.
Author_Institution :
Tokimec Inc., Tokyo, Japan
Abstract :
A novel method of a clamp-on ultrasonic flowmeter is proposed. With this method, a widebeam is examined theoretically by the application of spatial frequency analysis. It is demonstrated that plate modes generated in a pipe wall exert bad effects on flowrate measurement. This method can reduce such effects. This method makes it possible to automatically compensate for the deviation of the transit path caused by the temperature change, and to measure the flowrate even if the sound velocity is unknown
Keywords :
flowmeters; ultrasonic applications; ultrasonic measurement; clamp-on; filtering effect reduction; flowrate measurement; pipe wall; plate modes; spatial frequency analysis; ultrasonic flowmeter; widebeam flowmeter; Acoustic sensors; Data flow computing; Delay effects; Equations; Frequency; Joining processes; Temperature sensors; Time measurement; Ultrasonic variables measurement; Velocity measurement;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171380
