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How Today's Gas Ultrasonic Meter Handles Compressor Pulsations

机译:当今的气体超声波仪表如何处理压缩机脉动

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摘要

The results obtained from this series or tests indicate that it is difficult to predict the effect pulsation will have on the meter simply by looking at the diagnostics. The pulsation fre- quency and amplitude, meter sample rate and gas velocity all have an influence on the magnitude of error introduced by the pulsation. Based on the analysis of these tests, it was observed that there was only one combination of pulsation frequency and pulsation amplitude at the lower velocity that created an error of greater than 0.5% and that was the 23 Hz high level (HL) test. Even with this very severe level of pulsation, when the meter was sampling at 10 samples per second (SPS), the deviation from baseline (when no pulsation existed) was within 0.5%. At the 15 fps flow velocity the worst error observed was at a sample rate of 15 and a pulsation frequency of 15 Hz.
机译:从该系列或测试获得的结果表明,仅通过查看诊断信息就很难预测脉动会对电表产生的影响。脉动的频率和幅度,仪表采样率和气体速度都对由脉动引起的误差幅度有影响。根据对这些测试的分析,可以发现在较低速度下只有脉动频率和脉动幅度的一种组合会产生大于0.5%的误差,这就是23 Hz高电平(HL)测试。即使在这种非常严重的脉动水平下,当仪表以每秒10个样本(SPS)进行采样时,与基线的偏差(当不存在脉动时)仍在0.5%以内。在15 fps的流速下,观察到的最差的错误是在15的采样率和15 Hz的脉动频率下。

著录项

  • 来源
    《Pipeline & gas journal》 |2011年第7期|p.42-45|共4页
  • 作者

    John Lansing;

  • 作者单位

    Sick Maihak, Inc., Houston, TX;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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