恩德斯豪斯E+H流量计又分为有差压式流量计、转子流量计、节流式流量计、细缝流量计、容积流量计、电磁流量计、超声波流量计等。按介质分类：液体流量计和气体流量计。

         工程上常用单位m3/h，它可分为瞬时流量（Flow Rate）和累计流量（Total Flow），瞬时流量即单位时间内过封闭管道或明渠有效截面的量，流过的物质可以是气体、液体、固体；

         在工业现场，测量流体流量的仪表统称为流量计或流量表。是工业测量中zui重要的仪表之一。随着工业的发展，对流量测量的准确度和范围要求越来越高，为了适应多种用途，各种类型的流量计相继问世，广泛应用于石油天然气、石油化工、水处理、食品饮料、制药、能源、冶金、纸浆造纸和建筑材料等行业。

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          在电磁测量原理中，流动的介质相当于运动的导体。感应电压(Ue)与介质流速(v)成比例关系，通过两个测量电极加载在放大器上。基于管道横截面积(A)计算体积流量(Q)。极性交替变换的开关直流电产生直流(DC)磁场。