| 钱梦騄,梁军汀,朱士明,卢杰.速差法超声波气体流量计的原理和校准[J].,1995,14(6):21-25 |
| 速差法超声波气体流量计的原理和校准 |
| Principle and calibration of ultrasonic gas flowmeter using velocity-difference method |
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| 中文摘要: |
| 本文简要地介绍一种利用超声脉冲沿顺、逆流方向上传播速度之差来测定气体流速及流量的新的微机化超声波气体流量计的工作原理，以及它在内径为700mm，流速在3—13m＼s范围内的校准结果．实验结果表明该微机化超声气体流量计的测速精度优于±2％． |
| 英文摘要: |
| The gas flow in a closed tube can be determined by measuring the difference between the downstream and upstream propagating velocity of ultrasound.In this paper the principle of this kind of ultrasonic flowmeter is discussed in detail and the experimental results of calibration about the gas flowmeter in a 700mm tube system are presented.It is shown that its relative accuracy of measuring the velocity of flow is better than ±2% in the range of 3-13 ms. |
| DOI：10.11684/j.issn.1000-310X.1995.06.007 |
| 中文关键词: 超声 气体流量计 校准 |
| 英文关键词: Ultrasound Gas flowmeter Calibration |
| 基金项目: |
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