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Design of miniature clamp-on ultrasonic flow measurement transducers
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Li, Zhichao, Smith, Luke and Dixon, Steve M. (2021) Design of miniature clamp-on ultrasonic flow measurement transducers. IEEE Sensors Letters, 5 (6). doi:10.1109/LSENS.2021.3081760 ISSN 1530-437X.
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WRAP-design-miniature-clamp-on-ultrasonic-flow-measurement-transducers-Dixon-2021 .pdf - Accepted Version - Requires a PDF viewer. Download (1402Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/LSENS.2021.3081760
Abstract
Clamp-on ultrasonic transit-time difference measurements of liquid flowrate are widely used in industry for both flow metering and heat metering applications. However, the sensors used tend to be relatively large, hindering their use on small diameter pipes, and using more material in the transducer wedge than is strictly necessary. The accuracy of the technique depends on a number of factors, and particularly on the accuracy of the compression wave speed in the liquid that is used in the calculations to obtain flowrate or heat transfer rate from the liquid in the pipe. Many flow meters either assume a value for the wave speed or obtain it using thermocouple measurements of the pipe exterior with a look-up table or simple equation. An error in the liquid ultrasonic velocity relates directly to errors in the calculated flowrate. It is highly beneficial if the ultrasonic wave speed in the liquid can be accurately measured in real time for flowrate calculations, especially for temperature and pressure varying conditions. A new type of small clamp-on ultrasonic transducer is reported, using a 6mm wide PEEK wedge that contains two piezoelectric elements, one of which generates sound normal to the flow direction, yielding the measurement of ultrasonic wave speed in the liquid. The new transducers were tested on a small rig with a 15mm diameter copper pipe and a 70mm diameter stainless steel pipe, yielding accurate measurements of liquid ultrasonic velocity and flowrates.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Microelectromechanical systems, Flow meters, Ultrasonic transducers | |||||||||
| Journal or Publication Title: | IEEE Sensors Letters | |||||||||
| Publisher: | IEEE | |||||||||
| ISSN: | 1530-437X | |||||||||
| Official Date: | June 2021 | |||||||||
| Dates: |
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| Volume: | 5 | |||||||||
| Number: | 6 | |||||||||
| DOI: | 10.1109/LSENS.2021.3081760 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 26 May 2021 | |||||||||
| Date of first compliant Open Access: | 4 June 2021 | |||||||||
| RIOXX Funder/Project Grant: |
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| Is Part Of: | 1 |
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