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Volume 39 Issue 1
Jan.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  (1): 37-41.
Yu Yang, Zong Guanghua, Ding Fenglinet al. Comparison of flow rate calculation method for ultrasonic flow measurement[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (1): 37-41. (in Chinese)
Citation: Yu Yang, Zong Guanghua, Ding Fenglinet al. Comparison of flow rate calculation method for ultrasonic flow measurement[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (1): 37-41. (in Chinese)
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Comparison of flow rate calculation method for ultrasonic flow measurement

  • 1.

    Robotics Institute, Beijing University of Aeronautics and Astronautics, Beijing 100191

  • 2. Beijing Institute of Control Engineering, Beijing 100190

  • Received Date: 21 Oct 2011
  • Publish Date: 31 Jan 2013
    Abstract
  • Ultrasonic flow meter (UFM) calculates the flow rate, by measuring the difference of ultrasound transit time between the upstream direction and downstream direction. For the purpose of accurate flow measurement, transit time difference method and frequency difference method were compared from three aspects: change of environment temperature, accuracy of time measurement, and uncertainty calculation. Ultrasonic flow measurement experiment shows, when the flow meter is not calibrated, compared with frequency difference method, transit time difference method can achieve better accuracy. The calibrated factor for the transit time difference method is more linear, so better accuracy is achieved for full flow range measurement.

     

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