如果測(cè)流量—— 流量測(cè)量的困難分為兩方面：流體特性和測(cè)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(yán)重因而帶來(lái)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(cè)量；脈動(dòng)流：發(fā)動(dòng)機(jī)、壓縮機(jī)、泵出口流體脈動(dòng)、石油天然氣井噴流脈動(dòng)等；大流量：管徑達(dá)數(shù)米，液體流量達(dá)108kg/h，氣體流量達(dá)106kg/
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