電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)是(shi)(shi)根據通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)導(dao)體在磁(ci)(ci)(ci)(ci)(ci)場中(zhong)受磁(ci)(ci)(ci)(ci)(ci)場力的(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)而(er)制成的(de)(de)(de)(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)內部(bu)有(you)(you)一(yi)永磁(ci)(ci)(ci)(ci)(ci)體，在極(ji)間產(chan)生磁(ci)(ci)(ci)(ci)(ci)場，在磁(ci)(ci)(ci)(ci)(ci)場中(zhong)有(you)(you)一(yi)個(ge)(ge)(ge)線(xian)(xian)(xian)圈，線(xian)(xian)(xian)圈兩(liang)端(duan)(duan)各有(you)(you)一(yi)個(ge)(ge)(ge)游絲(si)彈簧(huang)，彈簧(huang)各連接(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)的(de)(de)(de)(de)一(yi)個(ge)(ge)(ge)接(jie)線(xian)(xian)(xian)柱，在彈簧(huang)與(yu)線(xian)(xian)(xian)圈間由(you)(you)一(yi)個(ge)(ge)(ge)轉軸連接(jie)，在轉軸相對于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)的(de)(de)(de)(de)前端(duan)(duan)，有(you)(you)一(yi)個(ge)(ge)(ge)指(zhi)(zhi)針(zhen)。當有(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通(tong)(tong)過時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)沿彈簧(huang)、轉軸通(tong)(tong)過磁(ci)(ci)(ci)(ci)(ci)場，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)切磁(ci)(ci)(ci)(ci)(ci)感(gan)線(xian)(xian)(xian)，所(suo)以受磁(ci)(ci)(ci)(ci)(ci)場力的(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)，使線(xian)(xian)(xian)圈發生偏轉，帶動轉軸、指(zhi)(zhi)針(zhen)偏轉。由(you)(you)于(yu)磁(ci)(ci)(ci)(ci)(ci)場力的(de)(de)(de)(de)大(da)小隨電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)增(zeng)大(da)而(er)增(zeng)大(da)，所(suo)以就(jiu)(jiu)可(ke)(ke)以通(tong)(tong)過指(zhi)(zhi)針(zhen)的(de)(de)(de)(de)偏轉程(cheng)度來(lai)觀察電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)大(da)小。一(yi)般可(ke)(ke)直接(jie)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)微(wei)安(an)或(huo)毫安(an)數量(liang)(liang)級(ji)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，為(wei)測(ce)(ce)(ce)(ce)(ce)更(geng)大(da)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)應有(you)(you)并聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)(qi)（又稱分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)）。主要(yao)采(cai)用(yong)(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)。分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)要(yao)使滿(man)量(liang)(liang)程(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)通(tong)(tong)過時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)滿(man)偏轉，即電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)指(zhi)(zhi)示達到最大(da)。對于(yu)幾(ji)安(an)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)內設置分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)。對于(yu)幾(ji)安(an)以上的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，則(ze)(ze)采(cai)用(yong)(yong)(yong)外附(fu)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)。大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)很小，為(wei)避免引(yin)線(xian)(xian)(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)和接(jie)觸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)附(fu)加(jia)于(yu)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)而(er)引(yin)起誤差，分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)要(yao)制成四端(duan)(duan)形(xing)式，即有(you)(you)兩(liang)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端(duan)(duan)，兩(liang)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)端(duan)(duan)。直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)主要(yao)采(cai)用(yong)(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)(見(jian)機(ji)(ji)械式指(zhi)(zhi)示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou))，這些(xie)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)基本(ben)量(liang)(liang)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)用(yong)(yong)(yong)來(lai)直接(jie)測(ce)(ce)(ce)(ce)(ce)小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對于(yu)大(da)量(liang)(liang)值(zhi)(zhi)的(de)(de)(de)(de)直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，磁(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)要(yao)使用(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)，也(ye)(ye)(ye)就(jiu)(jiu)是(shi)(shi)并聯電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)。它(ta)(ta)的(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)(yong)是(shi)(shi)將(jiang)大(da)部(bu)分(fen)(fen)(fen)(fen)(fen)(fen)被測(ce)(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)。對約10A以下的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)多采(cai)用(yong)(yong)(yong)內附(fu)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi);對更(geng)大(da)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)，則(ze)(ze)使用(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)。它(ta)(ta)采(cai)取四端(duan)(duan)結構(gou)(gou)(圖a)，具(ju)有(you)(you)兩(liang)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)端(duan)(duan)，兩(liang)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位端(duan)(duan)。交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)可(ke)(ke)采(cai)用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)系(xi)(xi)(xi)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)。為(wei)使磁(ci)(ci)(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機(ji)(ji)構(gou)(gou)也(ye)(ye)(ye)能用(yong)(yong)(yong)于(yu)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)利用(yong)(yong)(yong)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)或(huo)熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶等器(qi)(qi)(qi)件先將(jiang)交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)轉換(huan)為(wei)直流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu);由(you)(you)它(ta)(ta)們組合(he)而(er)成的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)分(fen)(fen)(fen)(fen)(fen)(fen)別稱為(wei)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)(見(jian)整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao))、熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)。為(wei)擴大(da)量(liang)(liang)程(cheng)以測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)，整流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)也(ye)(ye)(ye)采(cai)用(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)的(de)(de)(de)(de)做法同前;電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)系(xi)(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)則(ze)(ze)是(shi)(shi)加(jia)粗線(xian)(xian)(xian)圈導(dao)線(xian)(xian)(xian)、減少匝(za)數。對于(yu)更(geng)大(da)的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)值(zhi)(zhi)需配(pei)合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)互感(gan)器(qi)(qi)(qi)使用(yong)(yong)(yong)。通(tong)(tong)常可(ke)(ke)利用(yong)(yong)(yong)分(fen)(fen)(fen)(fen)(fen)(fen)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)和交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)表(biao)構(gou)(gou)成交(jiao)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)數字電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)(liu)表(biao)。

繼(ji)電(dian)(dian)器(qi)(qi)（英文名稱：relay）是(shi)一(yi)(yi)種電(dian)(dian)控(kong)(kong)制(zhi)器(qi)(qi)件(jian)，是(shi)當(dang)輸入量（激勵量）的(de)(de)變化達到(dao)規定要求(qiu)時(shi)，在(zai)電(dian)(dian)氣輸出(chu)電(dian)(dian)路(lu)(lu)中(zhong)使被控(kong)(kong)量發生預定的(de)(de)階(jie)躍變化的(de)(de)一(yi)(yi)種電(dian)(dian)器(qi)(qi)。它具有控(kong)(kong)制(zhi)系統（又稱輸入回路(lu)(lu)）和被控(kong)(kong)制(zhi)系統（又稱輸出(chu)回路(lu)(lu)）之間的(de)(de)互動(dong)(dong)(dong)關系。通常(chang)應用于自(zi)動(dong)(dong)(dong)化的(de)(de)控(kong)(kong)制(zhi)電(dian)(dian)路(lu)(lu)中(zhong)，它實際上是(shi)用小(xiao)電(dian)(dian)流去(qu)控(kong)(kong)制(zhi)大電(dian)(dian)流運(yun)作的(de)(de)一(yi)(yi)種“自(zi)動(dong)(dong)(dong)開(kai)關”。故在(zai)電(dian)(dian)路(lu)(lu)中(zhong)起著自(zi)動(dong)(dong)(dong)調節、安全保護(hu)、轉(zhuan)換電(dian)(dian)路(lu)(lu)等作用。繼(ji)電(dian)(dian)器(qi)(qi)線(xian)(xian)圈在(zai)電(dian)(dian)路(lu)(lu)中(zhong)用一(yi)(yi)個長(chang)(chang)方框(kuang)符號(hao)表示，如(ru)果繼(ji)電(dian)(dian)器(qi)(qi)有兩(liang)個線(xian)(xian)圈，就畫(hua)兩(liang)個并(bing)列的(de)(de)長(chang)(chang)方框(kuang)。同(tong)時(shi)在(zai)長(chang)(chang)方框(kuang)內(nei)或(huo)長(chang)(chang)方框(kuang)旁標上繼(ji)電(dian)(dian)器(qi)(qi)的(de)(de)文字符號(hao)“J”。繼(ji)電(dian)(dian)器(qi)(qi)的(de)(de)觸(chu)點有兩(liang)種表示方法：一(yi)(yi)種是(shi)把它們直接(jie)畫(hua)在(zai)長(chang)(chang)方框(kuang)一(yi)(yi)側，這(zhe)種表示法較為直觀。另一(yi)(yi)種是(shi)按(an)照(zhao)電(dian)(dian)路(lu)(lu)連接(jie)的(de)(de)需要，把各(ge)個觸(chu)點分別畫(hua)到(dao)各(ge)自(zi)的(de)(de)控(kong)(kong)制(zhi)電(dian)(dian)路(lu)(lu)中(zhong)，通常(chang)在(zai)同(tong)一(yi)(yi)繼(ji)電(dian)(dian)器(qi)(qi)的(de)(de)觸(chu)點與線(xian)(xian)圈旁分別標注上相同(tong)的(de)(de)文字符號(hao)，并(bing)將觸(chu)點組編上號(hao)碼，以示區別。

WEIGEL    備件    DPA 10-31E10G
WEIGEL    電流表    UH230V-48 62HZ MAX 12VA
WEIGEL    儀表    TUA 2.2 UEN=60 mV  operating voltage :max. 519 V AC max. 300 V DC max. 300 V DC max. 300 V DC max.300 V DC 0 ... 12 V / IAN
WEIGEL    電壓表    DSA13-NA40/A12R-16
WEIGEL    電流表    LSP96K
WEIGEL    備件    LSP144
WEIGEL    備件    WEG.PQ48K 0-40microA analog meter with moving-coil movement 90°
WEIGEL    傳感器    XITA100MHV80
WEIGEL    備件    AU2.0 10 5 H0
WEIGEL    分流器    FLQ1017B2-300A
WEIGEL    備件    DSA13-NA50/AIRR-02
WEIGEL    變送器    VIU2.2 輸入0-115V 48-62HZ 輸出4-20MA 工作電源Vh195-293v
WEIGEL    油缸行程顯示器    DAS10-40PIR
WEIGEL    電流轉換器    AUE2.2  0-1A 4-20mA
WEIGEL    儀表    PQ96 60-0-60MV
WEIGEL    傳感器    PQ96K 40-0-40mv
WEIGEL    moving coil mechanism    Ordering Ordering Code:GQ96RS(3-15kV) Suitable for voltage transf 11.5kv/110v Scale:3-15kV
WEIGEL    油缸行程顯示器    DAS10-40PIR
WEIGEL    數顯表    DPA14-31A10R-4-M
WEIGEL    分流器    額定電流50A 直流輸出要60mV 可以短時耐受5倍的過流
WEIGEL    間隙顯示器    DSA13-NP40/C1R-07
WEIGEL    備件    DPA 10-31E10G
WEIGEL    電流表    BIEQ 72K 15min 1250/1A
WEIGEL    雙指針表    PSQ48 4-20mA.DC（帶調零裝置）90°Analog indicator 2 coils 雙指針表
WEIGEL    備件    WQ96RS SCALE:0-24KV
WEIGEL    表    EQ48K 0-250/500MA
WEIGEL    電流表    EQ96K  0...5/10A
WEIGEL    傳感器    PQ96K 0-40V
WEIGEL    電流表    RW96min-max 0-1.0A   表盤尺寸95*95mm
WEIGEL    顯示器    DAS10-40P1R S-Nr.943622-003
WEIGEL    顯示器    DAS10-40P1R S-Nr.943622-003
WEIGEL    備件    VUW2.1
WEIGEL    備件    Type: AU2.0 Nr: 21090803 0.5A48.62Hz 0.20mA
WEIGEL    電壓轉換器    AU2.0  0-1A
WEIGEL    電壓轉換器    AU2.0  0-1A
WEIGEL    電流表    EQ48 150/5A
WEIGEL    電流表    EQ 72K   N/1A AC
WEIGEL    拉速表    HR-WP-XC401-00-19-W
WEIGEL    備件    114-50HZ-230V DRAWING NO:0130-S SN:294033
WEIGEL    功率因素表    DUW2.1
WEIGEL    備件    EQ48-MESSB:10A-SKALA:0-10A+STTX*
WEIGEL    表    RW96MIN/MAX MA AC  UH230V AC 0-1 A
WEIGEL    分流器    800.4418.S.C18.5KA.30mV
WEIGEL    備件    MP96 24K CA
WEIGEL    數顯表    DPA14-31A10R-4-M
WEIGEL    備件    EQ96K 0-1A =》0-1600A
WEIGEL    分流器    KL0.5，2000Amp/150MV
WEIGEL    電流表    LSP96K
WEIGEL    備件    EQ72-X  5A  5/10A
WEIGEL    備件    AU2.0 Input: 0...1A  Output: 0...20mA
WEIGEL    備件    WGL.RN.060MV/1000A_05_B  Shunt resistance 60 mV / 1000 A  Class 0.5  to DIN 43 703  type B   60 mV / 1000 A
WEIGEL    電壓表    PSQ72 Msuring range DC 0-2000V WINDOWS
WEIGEL    備件    AU2.0 Input: 0...1A  Output: 0...20mA
WEIGEL    備件    FQ96/2
WEIGEL    變送器(qi)    PTU2.OS 17 26 41 H3

WEIGEL電流轉換器AUE2.24-20mA翊霈代理供應

WEIGEL電流轉換器AUE2.24-20mA翊霈代理供應