*********電磁流量計日常檢查操作方(fang)式電(dian)磁流量計(ji)傳(chuan)統的定(ding)期維護檢查是(shi)(shi)將(jiang)流量傳(chuan)感(gan)(gan)器(qi)卸(xie)下(xia)管線清掃和檢查，然后實(shi)施流量校準。為減少流量傳(chuan)感(gan)(gan)器(qi)從管道上卸(xie)裝損傷襯(chen)里，先(xian)在管線上測量絕(jue)緣電(dian)阻等推斷有無異常現象，再決定(ding)下(xia)一步(bu)是(shi)(shi)否卸(xie)下(xia)管線檢查或實(shi)流流量校準。
具體操作(zuo)方式(shi)之一(yi)：企業可對電(dian)磁流(liu)量(liang)(liang)計每(mei)年做一(yi)次(ci)全面檢(jian)查(cha)。檢(jian)查(cha)內(nei)容為：外觀檢(jian)查(cha)，轉換(huan)器特性試驗，測(ce)量(liang)(liang)值校準，測(ce)量(liang)(liang)各部電(dian)壓，測(ce)量(liang)(liang)絕緣電(dian)阻(zu)，確(que)認電(dian)路等。儀表檢(jian)查(cha)調(diao)整時因(yin)零(ling)點漂(piao)移，調(diao)整零(ling)點顯得十分重要(yao)（“在(zai)線調(diao)零(ling)”須***使被測(ce)介質(zhi)停(ting)止(zhi)流(liu)動(dong)，實(shi)(shi)際不(bu)易辦到）。因(yin)此，在(zai)線檢(jian)查(cha)往往省略(lve)包含(han)有傳(chuan)感器運作(zuo)的檢(jian)查(cha)，而(er)僅(jin)實(shi)(shi)施轉換(huan)器的校準，以(yi)便將在(zai)線檢(jian)查(cha)結果和(he)歷史數據比(bi)較確(que)定(ding)儀表是(shi)(shi)繼續使用(yong)、修補(bu)還是(shi)(shi)更新(xin)，對傳(chuan)感器則按所測(ce)勵磁線圈絕緣電(dian)阻(zu)劣化程度(du)決定(ding)更新(xin)與否。
具(ju)體操作方式之二：通(tong)過在線檢查(cha)驗證電(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)流量計有(you)無異常現(xian)象。對不能(neng)(neng)停(ting)止介質流動(dong)的管(guan)線分別檢查(cha)流量傳(chuan)感器(qi)(qi)和(he)轉換器(qi)(qi)，用模擬信(xin)號(hao)器(qi)(qi)和(he)其他通(tong)用儀表測試轉換器(qi)(qi)具(ju)有(you)較(jiao)高(gao)的校準準確度(du)（這取決(jue)于(yu)模擬信(xin)號(hao)器(qi)(qi)準確度(du)），傳(chuan)感器(qi)(qi)檢查(cha)則以(yi)測試電(dian)(dian)(dian)(dian)極接液電(dian)(dian)(dian)(dian)阻，檢查(cha)勵(li)磁(ci)(ci)(ci)線圈包(bao)括勵(li)磁(ci)(ci)(ci)連接電(dian)(dian)(dian)(dian)纜的絕(jue)緣電(dian)(dian)(dian)(dian)阻和(he)銅(tong)電(dian)(dian)(dian)(dian)阻，以(yi)及(ji)檢查(cha)轉換器(qi)(qi)輸出的勵(li)磁(ci)(ci)(ci)電(dian)(dian)(dian)(dian)流，核對磁(ci)(ci)(ci)場強度(du)等間接方法。對能(neng)(neng)停(ting)止介質流動(dong)條件(jian)的管(guan)線，可從(cong)預設在傳(chuan)感器(qi)(qi)附近入(ru)孔進入(ru)，檢查(cha)電(dian)(dian)(dian)(dian)級和(he)襯里污穢/沉積狀況并清洗。
