High-rangeability ultrasonic gas flowmeter for monitoring flare gas

Journal Article · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Ultrasonics, Ferroelectr. Freq. Control; (United States)

DOI:https://doi.org/10.1109/58.19144· OSTI ID:5759268

Mylvaganam, K S

A transit-time ultrasonic gas flowmeter for high-range-ability requirements, such as those encountered in flare-gas flow-metering, is presented. The concept of ray rescue angle for the orientation of the ultrasonic transducers in single-beam transit-time ultrasonic flowmeters is introduced to overcome the problem of ultrasonic beam drift in high-velocity flows. To overcome problems associated with noise at high velocities, use of a chirp signal is presented. To preserve accuracy of the meter at low velocities near zero flow, a combination of chirp and continuous wave (CW) signals is used to interrogate the flow. Overall system performance is presented, based on results from extensive wind-tunnel tests.

• Research Organization: Dept. of Science and Technology, Michelsen Institute, Fantoftvegen 38, N-5036 Fantoft (NO)
• OSTI ID: 5759268
• Journal Information: IEEE Trans. Ultrasonics, Ferroelectr. Freq. Control; (United States), Journal Name: IEEE Trans. Ultrasonics, Ferroelectr. Freq. Control; (United States) Vol. 36:2; ISSN ITUCE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ACOUSTIC TESTING
FLOWMETERS
FLUIDS
GASES
MATERIALS TESTING
MEASURING INSTRUMENTS
METERS
NONDESTRUCTIVE TESTING
PERFORMANCE
TESTING
TRANSDUCERS
ULTRASONIC TESTING