如果測流量—— 流量測量的困難分為兩方面：流體特性和測量特性。 1． 流體特性 臟污流：流體臟污、沉積和堵塞，如煤氣、煙廢氣、污水等；腐蝕流：管道腐蝕嚴重因而帶來臟污流，儀表耐蝕要求高；高參數(shù)流：高溫、高壓、真空及低溫極端工作條件下的流量測量；脈動流：發(fā)動機、壓縮機、泵出口流體脈動、石油天然氣井噴流脈動等；大流量：管徑達數(shù)米，液體流量達108kg/h，氣體流量達106kg/
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