電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)是(shi)(shi)根據通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)導(dao)體在(zai)磁(ci)(ci)(ci)場(chang)(chang)中受(shou)磁(ci)(ci)(ci)場(chang)(chang)力(li)的(de)(de)(de)(de)(de)作用(yong)而(er)制成(cheng)(cheng)的(de)(de)(de)(de)(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)內(nei)部有(you)(you)一永(yong)磁(ci)(ci)(ci)體，在(zai)極間產生(sheng)磁(ci)(ci)(ci)場(chang)(chang)，在(zai)磁(ci)(ci)(ci)場(chang)(chang)中有(you)(you)一個(ge)(ge)線(xian)圈，線(xian)圈兩(liang)端(duan)各有(you)(you)一個(ge)(ge)游(you)絲(si)彈(dan)(dan)簧，彈(dan)(dan)簧各連接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)一個(ge)(ge)接線(xian)柱，在(zai)彈(dan)(dan)簧與線(xian)圈間由一個(ge)(ge)轉(zhuan)(zhuan)軸(zhou)(zhou)連接，在(zai)轉(zhuan)(zhuan)軸(zhou)(zhou)相對于(yu)(yu)(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)前端(duan)，有(you)(you)一個(ge)(ge)指針(zhen)。當(dang)有(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)通(tong)過時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)沿彈(dan)(dan)簧、轉(zhuan)(zhuan)軸(zhou)(zhou)通(tong)過磁(ci)(ci)(ci)場(chang)(chang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)切(qie)磁(ci)(ci)(ci)感(gan)線(xian)，所以受(shou)磁(ci)(ci)(ci)場(chang)(chang)力(li)的(de)(de)(de)(de)(de)作用(yong)，使(shi)線(xian)圈發(fa)生(sheng)偏(pian)轉(zhuan)(zhuan)，帶動轉(zhuan)(zhuan)軸(zhou)(zhou)、指針(zhen)偏(pian)轉(zhuan)(zhuan)。由于(yu)(yu)(yu)(yu)(yu)磁(ci)(ci)(ci)場(chang)(chang)力(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)增大(da)(da)而(er)增大(da)(da)，所以就可(ke)(ke)以通(tong)過指針(zhen)的(de)(de)(de)(de)(de)偏(pian)轉(zhuan)(zhuan)程度(du)來觀(guan)察電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)大(da)(da)小。一般可(ke)(ke)直接測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)微安或(huo)(huo)毫(hao)安數(shu)(shu)(shu)量(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)，為(wei)(wei)(wei)測(ce)(ce)(ce)(ce)(ce)更大(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)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)應有(you)(you)并聯(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)（又稱分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)）。主要(yao)采(cai)(cai)用(yong)磁(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)。分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(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)(zu)(zu)(zu)值(zhi)要(yao)使(shi)滿量(liang)(liang)(liang)程電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)通(tong)過時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)滿偏(pian)轉(zhuan)(zhuan)，即電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)指示(shi)達到最大(da)(da)。對于(yu)(yu)(yu)(yu)(yu)幾安的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)內(nei)設置分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。對于(yu)(yu)(yu)(yu)(yu)幾安以上的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，則(ze)采(cai)(cai)用(yong)外附(fu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(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)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(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)(zu)(zu)(zu)值(zhi)很小，為(wei)(wei)(wei)避(bi)免引線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)和接觸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)附(fu)加于(yu)(yu)(yu)(yu)(yu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)而(er)引起誤差，分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)要(yao)制成(cheng)(cheng)四端(duan)形式(shi)，即有(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)端(duan)，兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓端(duan)。直流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)主要(yao)采(cai)(cai)用(yong)磁(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)或(huo)(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)(見機(ji)(ji)械式(shi)指示(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou))，這(zhe)些(xie)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)基(ji)本量(liang)(liang)(liang)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)用(yong)來直接測(ce)(ce)(ce)(ce)(ce)小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)。對于(yu)(yu)(yu)(yu)(yu)大(da)(da)量(liang)(liang)(liang)值(zhi)的(de)(de)(de)(de)(de)直流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，磁(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)要(yao)使(shi)用(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)，也(ye)就是(shi)(shi)并聯(lian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)。它(ta)的(de)(de)(de)(de)(de)作用(yong)是(shi)(shi)將(jiang)大(da)(da)部分(fen)(fen)被(bei)測(ce)(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)。對約(yue)10A以下的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)多采(cai)(cai)用(yong)內(nei)附(fu)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi);對更大(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)值(zhi)，則(ze)使(shi)用(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)。它(ta)采(cai)(cai)取四端(duan)結(jie)構(gou)(gou)(gou)(圖a)，具有(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)端(duan)，兩(liang)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位端(duan)。交流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)可(ke)(ke)采(cai)(cai)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)系(xi)(xi)或(huo)(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)。為(wei)(wei)(wei)使(shi)磁(ci)(ci)(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)機(ji)(ji)構(gou)(gou)(gou)也(ye)能(neng)用(yong)于(yu)(yu)(yu)(yu)(yu)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)交流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，可(ke)(ke)利(li)用(yong)整(zheng)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)或(huo)(huo)熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶等器(qi)(qi)(qi)(qi)(qi)(qi)(qi)件先將(jiang)交流(liu)(liu)(liu)(liu)(liu)轉(zhuan)(zhuan)換為(wei)(wei)(wei)直流(liu)(liu)(liu)(liu)(liu);由它(ta)們組合(he)而(er)成(cheng)(cheng)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)分(fen)(fen)別稱為(wei)(wei)(wei)整(zheng)流(liu)(liu)(liu)(liu)(liu)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)(見整(zheng)流(liu)(liu)(liu)(liu)(liu)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)表(biao)(biao)(biao)(biao)(biao)(biao)(biao))、熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)。為(wei)(wei)(wei)擴大(da)(da)量(liang)(liang)(liang)程以測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)，整(zheng)流(liu)(liu)(liu)(liu)(liu)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)也(ye)采(cai)(cai)用(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi);電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(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)(ci)系(xi)(xi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)則(ze)是(shi)(shi)加粗(cu)線(xian)圈導(dao)線(xian)、減少匝數(shu)(shu)(shu)。對于(yu)(yu)(yu)(yu)(yu)更大(da)(da)的(de)(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)值(zhi)需配合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)互感(gan)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)使(shi)用(yong)。通(tong)常可(ke)(ke)利(li)用(yong)分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)和交流(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)(biao)(biao)(biao)(biao)(biao)構(gou)(gou)(gou)成(cheng)(cheng)交流(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)表(biao)(biao)(biao)(biao)(biao)(biao)(biao)。

液(ye)(ye)控(kong)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)主(zhu)要是指電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa),它在(zai)接受電(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣模擬信(xin)號(hao)(hao)后，相應輸(shu)(shu)出調制(zhi)(zhi)的(de)(de)(de)流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)和(he)(he)壓(ya)力(li)(li)。它既是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)轉(zhuan)換(huan)元件，也是功(gong)率(lv)放大(da)(da)元件，它能夠將(jiang)小功(gong)率(lv)的(de)(de)(de)微弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣輸(shu)(shu)入(ru)(ru)(ru)(ru)(ru)信(xin)號(hao)(hao)轉(zhuan)換(huan)為大(da)(da)功(gong)率(lv)的(de)(de)(de)液(ye)(ye)壓(ya)能（流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)和(he)(he)壓(ya)力(li)(li)）輸(shu)(shu)出。在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)伺(si)(si)(si)(si)(si)服系(xi)統中(zhong)，它將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣部分與(yu)液(ye)(ye)壓(ya)部分連(lian)接起來(lai)，實現電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)信(xin)號(hao)(hao)的(de)(de)(de)轉(zhuan)換(huan)與(yu)液(ye)(ye)壓(ya)放大(da)(da)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)伺(si)(si)(si)(si)(si)服系(xi)統控(kong)制(zhi)(zhi)的(de)(de)(de)核(he)心。液(ye)(ye)控(kong)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)是在(zai)伺(si)(si)(si)(si)(si)服系(xi)統中(zhong)將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)號(hao)(hao)輸(shu)(shu)入(ru)(ru)(ru)(ru)(ru)轉(zhuan)換(huan)為功(gong)率(lv)較大(da)(da)的(de)(de)(de)壓(ya)力(li)(li)或流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)壓(ya)力(li)(li)信(xin)號(hao)(hao)輸(shu)(shu)出的(de)(de)(de)執(zhi)行(xing)元件。它是一種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)轉(zhuan)換(huan)和(he)(he)功(gong)率(lv)放大(da)(da)元件。伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)的(de)(de)(de)靈敏度高，快速性好，能將(jiang)很小的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)信(xin)號(hao)(hao)（例如(ru)10毫安）轉(zhuan)換(huan)成很大(da)(da)的(de)(de)(de)液(ye)(ye)壓(ya)功(gong)率(lv)（如(ru)幾十匹馬(ma)力(li)(li)以(yi)上），可以(yi)驅動(dong)多(duo)種(zhong)類型(xing)的(de)(de)(de)負載(zai)。過去人們(men)曾把噴嘴(zui)檔板(ban)閥(fa)(fa)(fa)(fa)、射流(liu)(liu)(liu)(liu)(liu)(liu)管或滑閥(fa)(fa)(fa)(fa)伺(si)(si)(si)(si)(si)服馬(ma)達(da)(da)等液(ye)(ye)壓(ya)放大(da)(da)裝置都列入(ru)(ru)(ru)(ru)(ru)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)范圍內。20世紀70年(nian)代以(yi)來(lai)，伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)一般僅(jin)指電(dian)(dian)(dian)(dian)(dian)(dian)(dian)液(ye)(ye)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)。典型(xing)的(de)(de)(de)伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)由永磁力(li)(li)矩(ju)(ju)(ju)馬(ma)達(da)(da)、噴嘴(zui)、檔板(ban)、閥(fa)(fa)(fa)(fa)芯(xin)、閥(fa)(fa)(fa)(fa)套和(he)(he)控(kong)制(zhi)(zhi)腔組成(見圖)。當輸(shu)(shu)入(ru)(ru)(ru)(ru)(ru)線圈通入(ru)(ru)(ru)(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)時，檔板(ban)向(xiang)(xiang)(xiang)右(you)移(yi)(yi)動(dong)，使(shi)右(you)邊(bian)噴嘴(zui)的(de)(de)(de)節流(liu)(liu)(liu)(liu)(liu)(liu)作(zuo)用加(jia)強，流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)減少，右(you)側背壓(ya)上升；同(tong)時使(shi)左邊(bian)噴嘴(zui)節流(liu)(liu)(liu)(liu)(liu)(liu)作(zuo)用減小，流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)增加(jia)，左側背壓(ya)下降。閥(fa)(fa)(fa)(fa)芯(xin)兩端的(de)(de)(de)作(zuo)用力(li)(li)失(shi)去平(ping)衡, 閥(fa)(fa)(fa)(fa)芯(xin)遂向(xiang)(xiang)(xiang)左移(yi)(yi)動(dong)。高壓(ya)油(you)從S流(liu)(liu)(liu)(liu)(liu)(liu)向(xiang)(xiang)(xiang)C2，送到負載(zai)。負載(zai)回油(you)通過 C1流(liu)(liu)(liu)(liu)(liu)(liu)過回油(you)口，進入(ru)(ru)(ru)(ru)(ru)油(you)箱。閥(fa)(fa)(fa)(fa)芯(xin)的(de)(de)(de)位移(yi)(yi)量(liang)與(yu)力(li)(li)矩(ju)(ju)(ju)馬(ma)達(da)(da)的(de)(de)(de)輸(shu)(shu)入(ru)(ru)(ru)(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)成正比，作(zuo)用在(zai)閥(fa)(fa)(fa)(fa)芯(xin)上的(de)(de)(de)液(ye)(ye)壓(ya)力(li)(li)與(yu)彈簧力(li)(li)相平(ping)衡，因此(ci)在(zai)平(ping)衡狀態下力(li)(li)矩(ju)(ju)(ju)馬(ma)達(da)(da)的(de)(de)(de)差動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)與(yu)閥(fa)(fa)(fa)(fa)芯(xin)的(de)(de)(de)位移(yi)(yi)成正比。如(ru)果輸(shu)(shu)入(ru)(ru)(ru)(ru)(ru)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)反向(xiang)(xiang)(xiang)，則(ze)流(liu)(liu)(liu)(liu)(liu)(liu)量(liang)也反向(xiang)(xiang)(xiang)。表中(zhong)是伺(si)(si)(si)(si)(si)服閥(fa)(fa)(fa)(fa)的(de)(de)(de)分類。

WEIGEL    油缸行程顯示器    DAS10-40PIR S-Nr:943614008 備注645.4024.1000
WEIGEL    電流表    AMEQ72KLZS001
WEIGEL    電流表    PQ96K MESSB.0-10V;SKALA 0-10A Ammeter
WEIGEL    備件    EQ48-MESSB:25A-SKALA:0-25A+STTX*
WEIGEL    電流表    PQ72K 0-10V
WEIGEL    備件    WQ96/2S
WEIGEL    備件    PQ 96
WEIGEL    分流器    shunt 8kA/60mV
WEIGEL    備件    Type: VQ72K 0-750V Production ID: 1TNS08030129R1
WEIGEL    備件    AUE2.2
WEIGEL    表    P72PRS
WEIGEL    電流表    RW96min-max 0-1.0A   表盤尺寸95*95mm
WEIGEL    變送器    A1U2.2 輸入0-5A(48-62HZ) 輸出4-20MA 電壓195-253VAC
WEIGEL    備件    AU2.0 Input: 0...1A  Output: 0...20mA
WEIGEL    備件    FQ96/2
WEIGEL    備件    DAS10-40P1R NR：943622-003
WEIGEL    油缸行程顯示器    DAS10-40PIR
WEIGEL    儀表    PQ48K 0-40microA
WEIGEL    電流表    PQ96K 0-10V:=0-150A
WEIGEL    備件    LSP144
WEIGEL    舵機計時器    TYPE:BG40.×7/3121×0 SERIAL NO.:10T50 0508
WEIGEL    安裝盤    SHUNT ISO.PLATE LARGE 155X90X6MM， 870-93260（R021安裝盤）
WEIGEL    分流器    8000A/60MV
WEIGEL    240°指針表    LSP48(4~20mA 帶零位調整） 48mmX48mm240°指針表
WEIGEL    動鐵式儀表    AC 0..500V （Moving-iron meter AC 0..500 V ）
WEIGEL    電流表    EQ96-X 100/1 0-100A/500A
WEIGEL    備件    AUE2.2
WEIGEL    電壓表    EQ96-X             measure 0-300V   scale 0-300V    無紅線
WEIGEL    安培表    PQ72R 0-20MA
WEIGEL    備件    EQ96K 0-1A =》0-1600A
WEIGEL    分流器安裝盤    SHUNTISO. PLATE LARGE 155X90X6MM TRAFO，870-93260
WEIGEL    電流表    BIEQ 72K 15min 1250/1A
WEIGEL    備件    DV3.001.776C
WEIGEL    電流表    LSP96K
WEIGEL    分流器    8000A/60MV
WEIGEL    備件    Type: VQ72K 0-750V Production ID: 1TNS08030129R1
WEIGEL    電流表    EQ144K/1A/40A
WEIGEL    備件    EQ144K/1A/300A
WEIGEL    電壓轉換器    AU2.0  0-1A
WEIGEL    電流轉換器    AUE2.2  0-1A 4-20mA
WEIGEL    表    250V
WEIGEL    電流表    PQ48K  4...20mA  0...315Bar
WEIGEL    表    100V
WEIGEL    安裝盤    SHUNT ISO.PLATE LARGE 155X90X6MM， 870-93260（R021安裝盤）
WEIGEL    備件    TUA2.2
WEIGEL    電流表    EQ144K/1A/20A
WEIGEL    壓力表    EQ96K50/1 A
WEIGEL    表    PQ48K
WEIGEL    備件    AUE2.2  0-1A  4-20MA   220V
WEIGEL    備件    SUS-01-Q-2/G-220DC
WEIGEL    表    DA12-NA40/F10R 72*24
WEIGEL    變送器    EAZ AIU2.0 輸入(ru)1A 輸出4-20mA

WEIGEL 電流表EQ144K/1A/20A翊霈代理供應

WEIGEL 電流表EQ144K/1A/20A翊霈代理供應