2.2系列的(de)變送器(qi)轉(zhuan)換現有(you)的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)或電(dian)(dian)(dian)(dian)壓(ya)極(ji)性成(cheng)為一(yi)個(ge)獨立(li)負載的(de)直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)或外(wai)加的(de)直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓(ya)。輸出信號(hao)可以(yi)(yi)被顯(xian)示(shi)，記錄(lu)和(he)/或用于(yu)(yu)直接在測(ce)試點控制(zhi)或測(ce)量位于(yu)(yu)遠(yuan)處的(de)設(she)施。變送器(qi)的(de)范圍包括正弦resp.、非正弦交(jiao)流(liu)(liu)(liu)(liu)信號(hao)以(yi)(yi)及直流(liu)(liu)(liu)(liu)信號(hao)。有(you)可能連接多個(ge)指(zhi)示(shi)器(qi)、記錄(lu)儀、控制(zhi)器(qi)、計算(suan)機等，輸出電(dian)(dian)(dian)(dian)路提(ti)供的(de)總阻抗不超過(guo)額(e)定值。電(dian)(dian)(dian)(dian)源(yuan)由一(yi)個(ge)單(dan)獨的(de)輔助(zhu)電(dian)(dian)(dian)(dian)壓(ya)輸入(ru)運(yun)行。輸入(ru)、輸出和(he)輔助(zhu)電(dian)(dian)(dian)(dian)壓(ya)輸入(ru)是(shi)(shi)由電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)相互隔離的(de)。電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)測(ce)量是(shi)(shi)由一(yi)個(ge)分流(liu)(liu)(liu)(liu)器(qi)運(yun)行，電(dian)(dian)(dian)(dian)壓(ya)測(ce)量由一(yi)個(ge)分壓(ya)器(qi)裝置運(yun)行。信號(hao)將(jiang)通過(guo)光(guang)路從輸入(ru)通道(dao)中被隔離，并轉(zhuan)換成(cheng)有(you)比(bi)例的(de)外(wai)加直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓(ya)或進(jin)入(ru)一(yi)個(ge)負載獨立(li)的(de)直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，其正比(bi)于(yu)(yu)輸入(ru)信號(hao)。