Time delay estimation in the ultrasonic
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Jian Sun; Weijun Lin; Chengyu Zhang; Zhihui Shen; Hailan Zhang
📂
Article
📅
2010
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Elsevier
🌐
English
⚖ 427 KB
A new prototype of ultrasonic flowmeter used in the oil well is presented. The flowmeter depends on the time delay between the propagating times of the downstream and upstream ultrasonic pulses. The ultrasonic passageway is slanted to prevent the disadvantage introduced by the high viscosity of the