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差压流量计范围度问题研究
消耗积分:3 |
格式:rar |
大小:433 |
2009-01-18
王飞云
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摘要:述了制约节流式差压流量计范围度扩大的3个主要因素:差压测量精确度、流出系数的非线性和可膨胀性系数变化，分析了均速管流量计的范围度，最后讨论了拓展范围度和提高系统精确度的方法。
关键词差压流量计均速管范围度不确定度自动校正
Abshvct Threeo fth e二factorsw hichre strictex pansiono fth era ngeabilityo fth rottlety ped iferentialpr essurefl owmetesa red escribed.Th esein -
eludes measuring accuracy of diferential pressure; non-linearity of flow-out coeficient; and variation of coeficient of expandability. The rangeability of
Annubar flowmeter is analyzed, and the methods of expanding rangeability and enhancing systematic accuracy are discussed.
Keywords Diferentialpre ssure flowmeter Ammbar Rangeability Undete-ninedness Auto-corection
关键词差压流量计均速管范围度不确定度自动校正
Abshvct Threeo fth e二factorsw hichre strictex pansiono fth era ngeabilityo fth rottlety ped iferentialpr essurefl owmetesa red escribed.Th esein -
eludes measuring accuracy of diferential pressure; non-linearity of flow-out coeficient; and variation of coeficient of expandability. The rangeability of
Annubar flowmeter is analyzed, and the methods of expanding rangeability and enhancing systematic accuracy are discussed.
Keywords Diferentialpre ssure flowmeter Ammbar Rangeability Undete-ninedness Auto-corection
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