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<p>Based on the measurement principle of ultrasonic gas meters, this paper establishes the measurement models of the instantaneous flow method and the cumulative flow method respectively. The gas meter verification device compatible with both instantaneous flow method and cumulative flow method has been innovatively developed. Experiments were conducted to evaluate the equivalence between the instantaneous flow method and the cumulative flow method. The experiment proved that the instantaneous flow method can effectively eliminate the influence of the tail number of the cumulative flow method on the measurement error. Under the premise of ensuring the reliability of the verification results, the lower limit value of the effective measurement time of the instantaneous flow method was sought by constantly changing the measurement time. The experimental results proved that the measurement time in the high zone could be shortened from 60 to 5&#xa0;s, and in the low zone from 600 to 60&#xa0;s by the instantaneous flow method. Moreover, the detection efficiency was more than 10 times that of the cumulative.</p>

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The Instantaneous Flow Measurement Method of Ultrasonic Gas Meters

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Lina Niu,
  • Yachun Jing,
  • Weiming Dou,
  • Hangcheng Jiang,
  • Lide Fang

摘要

Based on the measurement principle of ultrasonic gas meters, this paper establishes the measurement models of the instantaneous flow method and the cumulative flow method respectively. The gas meter verification device compatible with both instantaneous flow method and cumulative flow method has been innovatively developed. Experiments were conducted to evaluate the equivalence between the instantaneous flow method and the cumulative flow method. The experiment proved that the instantaneous flow method can effectively eliminate the influence of the tail number of the cumulative flow method on the measurement error. Under the premise of ensuring the reliability of the verification results, the lower limit value of the effective measurement time of the instantaneous flow method was sought by constantly changing the measurement time. The experimental results proved that the measurement time in the high zone could be shortened from 60 to 5 s, and in the low zone from 600 to 60 s by the instantaneous flow method. Moreover, the detection efficiency was more than 10 times that of the cumulative.