(1)液(ye)位(wei)(wei)控(kong)制儀(yi)表系(xi)統(tong)指示值變化(hua)到或小(xiao)時，可以(yi)先檢(jian)(jian)查(cha)檢(jian)(jian)測儀(yi)表看是否正(zheng)常，如指示正(zheng)常，將液(ye)位(wei)(wei)控(kong)制改為手動遙(yao)控(kong)液(ye)位(wei)(wei)，看液(ye)位(wei)(wei)變化(hua)情(qing)況。如液(ye)位(wei)(wei)可以(yi)穩(wen)定(ding)在(zai)一定(ding)的范圍，則故障在(zai)液(ye)位(wei)(wei)控(kong)制系(xi)統(tong)；如穩(wen)不住液(ye)位(wei)(wei)，一般(ban)為工(gong)藝(yi)系(xi)統(tong)造成(cheng)的故障，要從(cong)工(gong)藝(yi)方(fang)面查(cha)找原因。

(2)差壓式液(ye)(ye)(ye)位(wei)控制(zhi)儀表(biao)指(zhi)(zhi)(zhi)示和現(xian)場直讀式指(zhi)(zhi)(zhi)示儀表(biao)指(zhi)(zhi)(zhi)示對不(bu)上時，首先檢查現(xian)場直讀式指(zhi)(zhi)(zhi)示儀表(biao)是否(fou)正常(chang)，如指(zhi)(zhi)(zhi)示正常(chang)，檢查差壓式液(ye)(ye)(ye)位(wei)儀表(biao)的負(fu)壓導壓管封液(ye)(ye)(ye)是否(fou)有滲(shen)漏；若有滲(shen)漏，重(zhong)新(xin)灌(guan)封液(ye)(ye)(ye)，調(diao)零點；無滲(shen)漏，可能是儀表(biao)的負(fu)遷移量不(bu)對了(le)，重(zhong)新(xin)調(diao)整遷移量使儀表(biao)指(zhi)(zhi)(zhi)示正常(chang)。

(3)液(ye)位控(kong)制(zhi)(zhi)儀表(biao)系統指示值變(bian)化波動頻(pin)繁(fan)(fan)時，首先要(yao)分析液(ye)面控(kong)制(zhi)(zhi)對象的容量大(da)小，來分析故(gu)(gu)障(zhang)(zhang)的原因(yin)，容量大(da)一般是儀表(biao)故(gu)(gu)障(zhang)(zhang)造成。容量小的首先要(yao)分析工(gong)藝操作情況(kuang)是否有(you)變(bian)化，如有(you)變(bian)化很(hen)可能(neng)是工(gong)藝造成的波動頻(pin)繁(fan)(fan)。如沒有(you)變(bian)化可能(neng)是儀表(biao)故(gu)(gu)障(zhang)(zhang)造成。