恩德斯豪斯E+H流量計又分為有差壓式流量計、轉子流量計、節流式流量計、細縫流量計、容積流量計、電磁流量計、超聲波流量計等。按介質分類：液體流量計和氣體流量計。

         工程上常用單位m3/h，它可分為瞬時流量（Flow Rate）和累計流量（Total Flow），瞬時流量即單位時間內過封閉管道或明渠有效截面的量，流過的物質可以是氣體、液體、固體；

         在工業現場，測量流體流量的儀表統稱為流量計或流量表。是工業測量中zui重要的儀表之一。隨著工業的發展，對流量測量的準確度和范圍要求越來越高，為了適應多種用途，各種類型的流量計相繼問世，廣泛應用于石油天然氣、石油化工、水處理、食品飲料、制藥、能源、冶金、紙漿造紙和建筑材料等行業。

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          在電磁測量原理中，流動的介質相當于運動的導體。感應電壓(Ue)與介質流速(v)成比例關系，通過兩個測量電極加載在放大器上。基于管道橫截面積(A)計算體積流量(Q)。極性交替變換的開關直流電產生直流(DC)磁場。