Title :
Basic examination of the FM ultrasonic flowmeter for gas
Author :
Saitou, Tomohiro ; TANISAWA, Shigeru ; Hirose, Haruo
Author_Institution :
Nippon Inst. of Technol., Saitama, Japan
Abstract :
The construction of an ultrasonic gas flowmeter is difficult because the attenuation of ultrasonic waves and the effects of acoustic noises are considerably higher for gas than for liquid. The sound field of the proposed meter is stabilized by FM ultrasonic wave; however, the receiver eliminates the FM components. Therefore, the flow rate can be measured using a single frequency signal. The flowmeter investigated in the present study yields near satisfactory performance.
Keywords :
flow measurement; flowmeters; frequency modulation; ultrasonic measurement; FM ultrasonic gas flowmeter; FM ultrasonic wave; flow rate measurement; frequency modulation; mean flow velocity; phase-locked loop; Acoustic measurements; Acoustic noise; Attenuation; Equations; Fluid flow; Frequency modulation; Liquids; Prototypes; Ultrasonic variables measurement; Valves;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1196578
