電磁流量計工作原理：

電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)流量(liang)(liang)計的(de)工作原理(li)是基于法拉(la)第電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)感(gan)應定(ding)律。在電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)流量(liang)(liang)計中(zhong)，測量(liang)(liang)管(guan)內(nei)的(de)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)介質相(xiang)當(dang)于法拉(la)第試驗(yan)中(zhong)的(de)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)金屬桿(gan)，上下(xia)兩(liang)(liang)端的(de)兩(liang)(liang)個電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)線圈產生(sheng)恒(heng)定(ding)磁(ci)場(chang)。當(dang)有導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)介質流過(guo)時(shi)，則會產生(sheng)感(gan)應電(dian)(dian)(dian)(dian)(dian)(dian)壓。管(guan)道內(nei)部的(de)兩(liang)(liang)個電(dian)(dian)(dian)(dian)(dian)(dian)極測量(liang)(liang)產生(sheng)的(de)感(gan)應電(dian)(dian)(dian)(dian)(dian)(dian)壓。測量(liang)(liang)管(guan)道通(tong)過(guo)不導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)內(nei)襯（橡膠，特氟(fu)隆等(deng)）實(shi)現與流體(ti)和測量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)隔離(li)，如圖(tu)所示(shi)。