Abstract
Transit-time ultrasonic flow meters, measuring the time difference between upstream and downstream propagation of ultrasonic beams, have been widely utilized to obtain the average velocity of flow in many applications including natural gas flow rate measurement. The signal-to-noise ratio (SNR) of the ultrasonic signals frequently suffers from the sound drift effect, and thus, the arrival time detection probability and the range of the measurement are reduced. Moreover, installation-induced errors of the transducers further degrade the measurement accuracy. To solve these problems, transit-time flow measurements based on 2D flexural ultrasonic phased array technology are investigated. With a phased array, the bend of ultrasonic beams can be compensated by electronic and dynamic beam steering, ensuring optimum SNR and a broader range of measurement. In addition, multiple ultrasonic paths can be realized with an array so that the measurement accuracy can be further improved.
Original language | English |
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Number of pages | 1 |
DOIs | |
Publication status | Published - 31 Oct 2017 |
Event | 2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States Duration: 6 Sept 2017 → 9 Sept 2017 |
Conference
Conference | 2017 IEEE International Ultrasonics Symposium, IUS 2017 |
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Country/Territory | United States |
City | Washington |
Period | 6/09/17 → 9/09/17 |