電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)是根據(ju)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)導(dao)體在磁(ci)(ci)場中受(shou)磁(ci)(ci)場力(li)(li)的(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)而制成的(de)(de)(de)(de)(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)內部有(you)(you)一(yi)永磁(ci)(ci)體，在極(ji)間(jian)產生(sheng)磁(ci)(ci)場，在磁(ci)(ci)場中有(you)(you)一(yi)個(ge)(ge)線(xian)(xian)圈(quan)(quan)，線(xian)(xian)圈(quan)(quan)兩(liang)端(duan)(duan)(duan)各有(you)(you)一(yi)個(ge)(ge)游絲彈簧(huang)，彈簧(huang)各連(lian)接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)的(de)(de)(de)(de)(de)一(yi)個(ge)(ge)接線(xian)(xian)柱(zhu)，在彈簧(huang)與線(xian)(xian)圈(quan)(quan)間(jian)由(you)一(yi)個(ge)(ge)轉(zhuan)軸連(lian)接，在轉(zhuan)軸相對(dui)(dui)(dui)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)的(de)(de)(de)(de)(de)前端(duan)(duan)(duan)，有(you)(you)一(yi)個(ge)(ge)指(zhi)針(zhen)。當(dang)有(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通(tong)過(guo)(guo)時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)沿(yan)彈簧(huang)、轉(zhuan)軸通(tong)過(guo)(guo)磁(ci)(ci)場，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)切磁(ci)(ci)感線(xian)(xian)，所以(yi)受(shou)磁(ci)(ci)場力(li)(li)的(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)，使(shi)線(xian)(xian)圈(quan)(quan)發生(sheng)偏(pian)轉(zhuan)，帶動轉(zhuan)軸、指(zhi)針(zhen)偏(pian)轉(zhuan)。由(you)于(yu)(yu)磁(ci)(ci)場力(li)(li)的(de)(de)(de)(de)(de)大(da)(da)小隨電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)增大(da)(da)而增大(da)(da)，所以(yi)就可(ke)以(yi)通(tong)過(guo)(guo)指(zhi)針(zhen)的(de)(de)(de)(de)(de)偏(pian)轉(zhuan)程(cheng)度來觀察電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)大(da)(da)小。一(yi)般可(ke)直接測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)微安(an)或(huo)毫(hao)安(an)數(shu)(shu)(shu)量(liang)(liang)(liang)(liang)(liang)級(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，為測(ce)(ce)(ce)更(geng)大(da)(da)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)應(ying)有(you)(you)并(bing)聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)(qi)(qi)（又稱分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)）。主要采(cai)用(yong)(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)。分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值要使(shi)滿(man)量(liang)(liang)(liang)(liang)(liang)程(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通(tong)過(guo)(guo)時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)滿(man)偏(pian)轉(zhuan)，即(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)指(zhi)示達到最(zui)大(da)(da)。對(dui)(dui)(dui)于(yu)(yu)幾(ji)安(an)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)內設置分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)。對(dui)(dui)(dui)于(yu)(yu)幾(ji)安(an)以(yi)上(shang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，則采(cai)用(yong)(yong)(yong)外附(fu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)。大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值很小，為避免引線(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)和接觸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)附(fu)加(jia)于(yu)(yu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)而引起誤差，分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)要制成四端(duan)(duan)(duan)形式，即(ji)有(you)(you)兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端(duan)(duan)(duan)，兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓端(duan)(duan)(duan)。直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)主要采(cai)用(yong)(yong)(yong)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)(見機械式指(zhi)示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou))，這些測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)基本(ben)量(liang)(liang)(liang)(liang)(liang)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)用(yong)(yong)(yong)來直接測(ce)(ce)(ce)小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)(dui)(dui)于(yu)(yu)大(da)(da)量(liang)(liang)(liang)(liang)(liang)值的(de)(de)(de)(de)(de)直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)要使(shi)用(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)，也就是并(bing)聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)。它(ta)的(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)(yong)是將大(da)(da)部分(fen)(fen)被測(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對(dui)(dui)(dui)約10A以(yi)下的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)多(duo)采(cai)用(yong)(yong)(yong)內附(fu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi);對(dui)(dui)(dui)更(geng)大(da)(da)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值，則使(shi)用(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)。它(ta)采(cai)取(qu)四端(duan)(duan)(duan)結構(gou)(gou)(圖a)，具(ju)有(you)(you)兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端(duan)(duan)(duan)，兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位端(duan)(duan)(duan)。交流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)可(ke)采(cai)用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)。為使(shi)磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)機構(gou)(gou)也能用(yong)(yong)(yong)于(yu)(yu)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)交流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)利(li)用(yong)(yong)(yong)整(zheng)(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)或(huo)熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)等(deng)器(qi)(qi)(qi)(qi)(qi)件先將交流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)轉(zhuan)換(huan)為直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu);由(you)它(ta)們組(zu)合而成的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)分(fen)(fen)別稱為整(zheng)(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(見整(zheng)(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao))、熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)。為擴大(da)(da)量(liang)(liang)(liang)(liang)(liang)程(cheng)以(yi)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，整(zheng)(zheng)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)也采(cai)用(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)的(de)(de)(de)(de)(de)做法同前;電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)系(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)則是加(jia)粗線(xian)(xian)圈(quan)(quan)導(dao)線(xian)(xian)、減少匝(za)數(shu)(shu)(shu)。對(dui)(dui)(dui)于(yu)(yu)更(geng)大(da)(da)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)量(liang)(liang)(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值需配合電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)互感器(qi)(qi)(qi)(qi)(qi)使(shi)用(yong)(yong)(yong)。通(tong)常可(ke)利(li)用(yong)(yong)(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)和交流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數(shu)(shu)(shu)字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓表(biao)(biao)構(gou)(gou)成交流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數(shu)(shu)(shu)字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(biao)。

截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)又(you)(you)稱截(jie)(jie)(jie)門(men)(men)(men)閥(fa)(fa)(fa)(fa)(fa)，屬(shu)于強(qiang)制密(mi)(mi)封(feng)式(shi)(shi)(shi)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)，所(suo)(suo)(suo)以(yi)(yi)(yi)在(zai)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)關閉(bi)時(shi)(shi)，必須向閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)施加壓力(li)，以(yi)(yi)(yi)強(qiang)制密(mi)(mi)封(feng)面(mian)不(bu)泄漏。當介(jie)質(zhi)由(you)(you)閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)下(xia)方(fang)進入閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)時(shi)(shi)，操作(zuo)力(li)所(suo)(suo)(suo)需要(yao)克(ke)服(fu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)阻力(li)，是閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)和填料(liao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)摩擦力(li)與(yu)由(you)(you)介(jie)質(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)壓力(li)所(suo)(suo)(suo)產生(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)推力(li)，關閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)力(li)比開閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)力(li)大，所(suo)(suo)(suo)以(yi)(yi)(yi)閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)直(zhi)徑要(yao)大，否則(ze)會發生(sheng)閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)頂彎的(de)(de)(de)(de)(de)(de)(de)(de)(de)故障。按連接方(fang)式(shi)(shi)(shi)分為三種(zhong)：法蘭連接、絲扣連接、焊接連接。從(cong)自密(mi)(mi)封(feng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)出現(xian)后，截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)(de)(de)(de)介(jie)質(zhi)流(liu)向就改由(you)(you)閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)上(shang)方(fang)進入閥(fa)(fa)(fa)(fa)(fa)腔，這時(shi)(shi)在(zai)介(jie)質(zhi)壓力(li)作(zuo)用(yong)(yong)(yong)下(xia)，關閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)力(li)小(xiao)，而(er)(er)(er)開閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)力(li)大，閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)直(zhi)徑可以(yi)(yi)(yi)相應(ying)地(di)減少。同時(shi)(shi)，在(zai)介(jie)質(zhi)作(zuo)用(yong)(yong)(yong)下(xia)，這種(zhong)形(xing)式(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)也(ye)較嚴密(mi)(mi)。我國閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)“三化給”曾規定(ding)，截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)(de)(de)(de)流(liu)向，一(yi)律采用(yong)(yong)(yong)自上(shang)而(er)(er)(er)下(xia)。截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)開啟(qi)(qi)時(shi)(shi)，閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)的(de)(de)(de)(de)(de)(de)(de)(de)(de)開啟(qi)(qi)高度，為公稱直(zhi)徑的(de)(de)(de)(de)(de)(de)(de)(de)(de)25%～30%時(shi)(shi).流(liu)量(liang)已達到最大，表示閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)已達全開位置。所(suo)(suo)(suo)以(yi)(yi)(yi)截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)(de)(de)(de)全開位置，應(ying)由(you)(you)閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)的(de)(de)(de)(de)(de)(de)(de)(de)(de)行程(cheng)來決(jue)定(ding)。截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)（stop valve,Globe Valve）的(de)(de)(de)(de)(de)(de)(de)(de)(de)啟(qi)(qi)閉(bi)件是塞形(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)，密(mi)(mi)封(feng)上(shang)面(mian)呈平面(mian)或(huo)海錐(zhui)面(mian)，閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)沿閥(fa)(fa)(fa)(fa)(fa)座的(de)(de)(de)(de)(de)(de)(de)(de)(de)中心(xin)線(xian)作(zuo)直(zhi)線(xian)運動。閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)運動形(xing)式(shi)(shi)(shi)，（通用(yong)(yong)(yong)名(ming)稱：暗桿(gan)(gan)(gan)），也(ye)有(you)升(sheng)降旋轉桿(gan)(gan)(gan)式(shi)(shi)(shi)可用(yong)(yong)(yong)于控制空氣、水(shui)、蒸汽、各種(zhong)腐蝕(shi)性介(jie)質(zhi)、泥漿、油品、液態金屬(shu)和放射性介(jie)質(zhi)等各種(zhong)類(lei)型流(liu)體的(de)(de)(de)(de)(de)(de)(de)(de)(de)流(liu)動。因此(ci)，這種(zhong)類(lei)型的(de)(de)(de)(de)(de)(de)(de)(de)(de)截(jie)(jie)(jie)流(liu)截(jie)(jie)(jie)止閥(fa)(fa)(fa)(fa)(fa)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)非常適合作(zuo)為切(qie)斷或(huo)調(diao)節以(yi)(yi)(yi)及節流(liu)用(yong)(yong)(yong)。由(you)(you)于該類(lei)閥(fa)(fa)(fa)(fa)(fa)門(men)(men)(men)的(de)(de)(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)(fa)桿(gan)(gan)(gan)開啟(qi)(qi)或(huo)關閉(bi)行程(cheng)相對(dui)較短，而(er)(er)(er)且具(ju)有(you)非常可靠(kao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)切(qie)斷功(gong)能，又(you)(you)由(you)(you)于閥(fa)(fa)(fa)(fa)(fa)座通口(kou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)變化與(yu)閥(fa)(fa)(fa)(fa)(fa)瓣(ban)(ban)的(de)(de)(de)(de)(de)(de)(de)(de)(de)行程(cheng)成正比例(li)關系，非常適合于對(dui)流(liu)量(liang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)調(diao)節。

WEIGEL    續電器    RP96
WEIGEL    分流器    800.7339.S.1KA.60mV
WEIGEL    傳感器    PQ96K 40-0-40mv
WEIGEL    備件    WGL.RN.060MV/0300A_05_B  Shunt resistance 60 mV / 300 A  Class 0.5 to DIN 43 703  type B  60 mV / 300 A
WEIGEL    功率因數變送器    DUW2.1
WEIGEL    備件    VUE2.2 0-500V 4-20MA  220V
WEIGEL    電器件    SHUNT 6000A/60MV/CLASS 0.5
WEIGEL    備件    EQ144K/1A/300A
WEIGEL    備件    WGL.PQ96K.0-10V.1000A_DC Analog meters with moving-coil movement  measuring range 0…10 V DC scale 0…1000 A linear  accuracy class 1.5
WEIGEL    備件    WEG.PQ48K 0-40microA analog meter with moving-coil movement 90°
WEIGEL    電流表    EQ48K 15/5A
WEIGEL    備件    DPA 10-31E10G
WEIGEL    電流表    PQ96K 4-20mA:=0-250V
WEIGEL    備件    SHUNT 6000A/60MV/CLASS 0.5
WEIGEL    傳感器    PQ96K 40-0-40mv
WEIGEL    備件    EQ96K   0-500V
WEIGEL    備件    EQ72K 50/5A 600V
WEIGEL    備件    WGL.PQ96K.0-10V.0500V_DC Analog meters with moving-coil movement measuring range 0…10 V DC  scale 0…500 V linear  accuracy class 1.5 according to DIN EN 60 051 PQ 96 K
WEIGEL    電壓表    PQ96K 0-10V 0-120% POTI (0-10VDC/1mA + scale 0-120% w.pot )
WEIGEL    功率轉換器    DGW2.2 0-1625kw(48..62hz) 250/1A 6000/100V 4-20mA 2..10V
WEIGEL    電壓表    EQ96K-500V
WEIGEL    傳感器    PQ96K 0-40V
WEIGEL    90°指針表    PSQ48(4~20mA 帶零位調整）48mmX48mm
WEIGEL    分流器    4000A/60MV
WEIGEL    電流表    LSP96K
WEIGEL    動鐵式儀表    AC 0..600A （Moving-iron meter AC 0..600 A ）
WEIGEL    功率因數變送器    DUW2.1
WEIGEL    電流表    EQ96-X 3000/1A
WEIGEL    電壓變送器    電壓變送器/V1U2.0
WEIGEL    電流表    EQ96K 5/10A
WEIGEL    拉速表    HR-WP-XC401-00-19-W
WEIGEL    儀表    PQ96 0-60MV
WEIGEL    備件    EQ96K   0-500V
WEIGEL    安培表    PQ72K 0-20MA
WEIGEL    電壓表    PQ96K
WEIGEL    傾角顯示屏    DSA55-NS50/A2RW-12
WEIGEL    備件    WQ96RS SCALE:0-24KV
WEIGEL    備件    652.01.121600  SUS-01 R/G 220V DC
WEIGEL    電流表    EQ96K    1A 0-30KA
WEIGEL    分流器    SHUNT 2000A/150mV
WEIGEL    電壓表    EQ72K 0~750V
WEIGEL    電流表    UH230V-48 62HZ MAX 12VA
WEIGEL    功率因數變送器    DUW2.1
WEIGEL    備件    LSP96K
WEIGEL    電壓變送器    電壓變送器/V1U2.0
WEIGEL    備件    LSP144
WEIGEL    分流器    shunt-150mV-1000A-0.5
WEIGEL    電流表    PQ96K 0-10V:=0-150A
WEIGEL    功率因數變送器    DUW2.1
WEIGEL    測量變送表    VU03
WEIGEL    電流表    PQ48K  0-40MICROA
WEIGEL    備件    WEIGEL-0127 VU03
WEIGEL    備件    TUA2.2
WEIGEL    備件    AU2.0 Input: 0...1A  Output: 0...20mA
WEIGEL    恒張力指示INDICATOR    PQ42K Beleuchtung:24V、12V、6V
WEIGEL    顯示器    DAS10-40PIR S-Nr.943614008
WEIGEL    顯示器    DAS10-40P1R S-Nr.943622-003
WEIGEL    備件    WQ96/2S
WEIGEL    備件    WQ96/2S
WEIGEL    電壓表    LSP96K，輸入電流范圍4-20mA DC，輸出電壓范圍：0-250V，參數：150 CAT III，P小于0.01VA
WEIGEL    電壓變送器    電壓變送器/V1U2.0
WEIGEL    表    250V
WEIGEL    表    P72PRS
WEIGEL    電流顯示表    PQ96K60-0-60mV DC本體型規:PQ96K
WEIGEL    油缸行程顯示器    DAS10-40PIR S-Nr:943614008 備注645.4024.1000
WEIGEL    電流(liu)變(bian)送器    電流(liu)變(bian)送器/A1U2.0

WEIGEL 電流 PQ48K 0-40MICROA翊霈代理供應

WEIGEL 電流 PQ48K 0-40MICROA翊霈代理供應