恩德斯豪斯E+H流量計(jì)又分為有差壓式流量計(jì)、轉(zhuǎn)子流量計(jì)、節(jié)流式流量計(jì)、細(xì)縫流量計(jì)、容積流量計(jì)、電磁流量計(jì)、超聲波流量計(jì)等。按介質(zhì)分類：液體流量計(jì)和氣體流量計(jì)。

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

         在工業(yè)現(xiàn)場，測量流體流量的儀表統(tǒng)稱為流量計(jì)或流量表。是工業(yè)測量中zui重要的儀表之一。隨著工業(yè)的發(fā)展，對流量測量的準(zhǔn)確度和范圍要求越來越高，為了適應(yīng)多種用途，各種類型的流量計(jì)相繼問世，廣泛應(yīng)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(yè)。

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          在電磁測量原理中，流動的介質(zhì)相當(dāng)于運(yùn)動的導(dǎo)體。感應(yīng)電壓(Ue)與介質(zhì)流速(v)成比例關(guān)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(jì)算體積流量(Q)。極性交替變換的開關(guān)直流電產(chǎn)生直流(DC)磁場。