單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)是流(liu)(liu)(liu)(liu)體(ti)只能(neng)沿進水口(kou)(kou)流(liu)(liu)(liu)(liu)動，出(chu)水口(kou)(kou)介(jie)質卻無(wu)法(fa)(fa)回(hui)流(liu)(liu)(liu)(liu)，俗稱單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)又稱止(zhi)(zhi)回(hui)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)或逆(ni)止(zhi)(zhi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。用(yong)于液壓(ya)(ya)(ya)(ya)系(xi)統中(zhong)(zhong)防(fang)止(zhi)(zhi)油流(liu)(liu)(liu)(liu)反(fan)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動,或者用(yong)于氣(qi)(qi)動系(xi)統中(zhong)(zhong)防(fang)止(zhi)(zhi)壓(ya)(ya)(ya)(ya)縮(suo)(suo)空(kong)(kong)氣(qi)(qi)逆(ni)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)有(you)(you)(you)直(zhi)通式(shi)(shi)(shi)(shi)和(he)直(zhi)角(jiao)式(shi)(shi)(shi)(shi)兩(liang)種(zhong)。直(zhi)通式(shi)(shi)(shi)(shi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)用(yong)螺(luo)(luo)紋(wen)連接(jie)(jie)(jie)(jie)安(an)(an)裝(zhuang)在(zai)管路(lu)(lu)上。直(zhi)角(jiao)式(shi)(shi)(shi)(shi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)有(you)(you)(you)螺(luo)(luo)紋(wen)連接(jie)(jie)(jie)(jie)、板(ban)式(shi)(shi)(shi)(shi)連接(jie)(jie)(jie)(jie)和(he)法(fa)(fa)蘭連接(jie)(jie)(jie)(jie)三(san)(san)種(zhong)形式(shi)(shi)(shi)(shi)。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)有(you)(you)(you)直(zhi)通式(shi)(shi)(shi)(shi)和(he)直(zhi)角(jiao)式(shi)(shi)(shi)(shi)兩(liang)種(zhong)。直(zhi)通式(shi)(shi)(shi)(shi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)用(yong)螺(luo)(luo)紋(wen)連接(jie)(jie)(jie)(jie)安(an)(an)裝(zhuang)在(zai)管路(lu)(lu)上。直(zhi)角(jiao)式(shi)(shi)(shi)(shi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)有(you)(you)(you)螺(luo)(luo)紋(wen)連接(jie)(jie)(jie)(jie)、板(ban)式(shi)(shi)(shi)(shi)連接(jie)(jie)(jie)(jie)和(he)法(fa)(fa)蘭連接(jie)(jie)(jie)(jie)三(san)(san)種(zhong)形式(shi)(shi)(shi)(shi)。液控(kong)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)也(ye)稱閉(bi)(bi)鎖(suo)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)或保壓(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)，它與單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)相(xiang)同，用(yong)以防(fang)止(zhi)(zhi)油液反(fan)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動。但在(zai)液壓(ya)(ya)(ya)(ya)回(hui)路(lu)(lu)中(zhong)(zhong)需(xu)要油流(liu)(liu)(liu)(liu)反(fan)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動時又可(ke)利用(yong)控(kong)制(zhi)油壓(ya)(ya)(ya)(ya)，打開(kai)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)，使(shi)(shi)(shi)油流(liu)(liu)(liu)(liu)在(zai)兩(liang)個(ge)方(fang)向(xiang)(xiang)(xiang)(xiang)都可(ke)流(liu)(liu)(liu)(liu)動。液控(kong)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)采(cai)用(yong)錐形閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯，因此密封性能(neng)好(hao)。在(zai)要求封閉(bi)(bi)油路(lu)(lu)時，可(ke)用(yong)此閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)作(zuo)(zuo)為油路(lu)(lu)的(de)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)鎖(suo)緊(jin)而(er)起保壓(ya)(ya)(ya)(ya)作(zuo)(zuo)用(yong)。液控(kong)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)控(kong)制(zhi)油的(de)泄(xie)漏(lou)方(fang)式(shi)(shi)(shi)(shi)有(you)(you)(you)內泄(xie)式(shi)(shi)(shi)(shi)和(he)外泄(xie)式(shi)(shi)(shi)(shi)二種(zhong)。在(zai)油流(liu)(liu)(liu)(liu)反(fan)向(xiang)(xiang)(xiang)(xiang)出(chu)口(kou)(kou)無(wu)背壓(ya)(ya)(ya)(ya)的(de)油路(lu)(lu)中(zhong)(zhong)可(ke)用(yong)內泄(xie)式(shi)(shi)(shi)(shi)；否則需(xu)用(yong)外泄(xie)式(shi)(shi)(shi)(shi)，以降低控(kong)制(zhi)油壓(ya)(ya)(ya)(ya)力。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)是氣(qi)(qi)流(liu)(liu)(liu)(liu)只能(neng)一(yi)(yi)個(ge)方(fang)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動而(er)不(bu)能(neng)反(fan)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動的(de)方(fang)向(xiang)(xiang)(xiang)(xiang)控(kong)制(zhi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。其工作(zuo)(zuo)原理與液壓(ya)(ya)(ya)(ya)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)一(yi)(yi)樣。壓(ya)(ya)(ya)(ya)縮(suo)(suo)空(kong)(kong)氣(qi)(qi)從P口(kou)(kou)進入(ru)，克服彈簧(huang)力和(he)摩擦力使(shi)(shi)(shi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)口(kou)(kou)開(kai)啟，壓(ya)(ya)(ya)(ya)縮(suo)(suo)空(kong)(kong)氣(qi)(qi)從P流(liu)(liu)(liu)(liu)至A；當(dang)P口(kou)(kou)無(wu)壓(ya)(ya)(ya)(ya)縮(suo)(suo)空(kong)(kong)氣(qi)(qi)時，在(zai)彈簧(huang)力和(he)A口(kou)(kou)(腔)余氣(qi)(qi)力作(zuo)(zuo)用(yong)下；閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)口(kou)(kou)處于關閉(bi)(bi)狀 態，使(shi)(shi)(shi)從A至P氣(qi)(qi)流(liu)(liu)(liu)(liu)不(bu)通。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)應用(yong)于不(bu)允許(xu)氣(qi)(qi)流(liu)(liu)(liu)(liu)反(fan)向(xiang)(xiang)(xiang)(xiang)流(liu)(liu)(liu)(liu)動的(de)場合(he)，如(ru)空(kong)(kong)壓(ya)(ya)(ya)(ya)機向(xiang)(xiang)(xiang)(xiang)氣(qi)(qi)罐充(chong)氣(qi)(qi) 時，在(zai)空(kong)(kong)壓(ya)(ya)(ya)(ya)機與氣(qi)(qi)罐之(zhi)間設置一(yi)(yi)單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)，當(dang)空(kong)(kong)壓(ya)(ya)(ya)(ya)機停止(zhi)(zhi)工作(zuo)(zuo)時，可(ke)防(fang)止(zhi)(zhi)氣(qi)(qi)罐中(zhong)(zhong)的(de)壓(ya)(ya)(ya)(ya)縮(suo)(suo)空(kong)(kong)氣(qi)(qi)回(hui)流(liu)(liu)(liu)(liu) 到(dao)空(kong)(kong)壓(ya)(ya)(ya)(ya)機。單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)還常與節流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)、順(shun)序閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)等組合(he)成單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)節流(liu)(liu)(liu)(liu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)、單(dan)(dan)向(xiang)(xiang)(xiang)(xiang)順(shun)序閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)使(shi)(shi)(shi)用(yong)。

壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)采用(yong)高(gao)精(jing)度、高(gao)穩(wen)定性能(neng)的(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)傳(chuan)感器(qi)和(he)(he)變送(song)電路，再(zai)經 CPU模塊化(hua)信號(hao)(hao)(hao)處理(li)技(ji)術，實(shi)現對(dui)(dui)介質壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)信號(hao)(hao)(hao)的(de)(de)檢測(ce)、顯示、報警和(he)(he)控(kong)制信號(hao)(hao)(hao)輸出。壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)可(ke)以廣(guang)泛(fan)用(yong)于(yu)石油、化(hua)工(gong)、冶金(jin)、電力(li)(li)(li)、供水等(deng)(deng)領(ling)(ling)域(yu)中(zhong)(zhong)對(dui)(dui)各(ge)種(zhong)氣體、液體的(de)(de)表壓(ya)(ya)(ya)(ya)(ya)、絕壓(ya)(ya)(ya)(ya)(ya)的(de)(de)測(ce)量控(kong)制，是(shi)工(gong)業現場(chang)理(li)想的(de)(de)智能(neng)化(hua)測(ce)控(kong)儀表。壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)是(shi)與電器(qi)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)相結合的(de)(de)裝(zhuang)置，當(dang)到(dao)達(da)預先設(she)定的(de)(de)流體壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)時(shi)，開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)接(jie)點動作。主要(yao)應用(yong)于(yu)電廠、石化(hua)、冶金(jin)行業等(deng)(deng)工(gong)業設(she)備上(shang)輸出報警或(huo)(huo)控(kong)制信號(hao)(hao)(hao)，在工(gong)業領(ling)(ling)域(yu)中(zhong)(zhong)有著重要(yao)的(de)(de)用(yong)途，能(neng)預防生(sheng)產(chan)(chan)工(gong)程中(zhong)(zhong)重要(yao)裝(zhuang)置的(de)(de)損壞，避免了重大(da)生(sheng)產(chan)(chan)事(shi)故(gu)地發(fa)(fa)生(sheng)。電子壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)是(shi)通(tong)過高(gao)精(jing)度儀表放(fang)大(da)器(qi)放(fang)大(da)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)信號(hao)(hao)(hao)，通(tong)過高(gao)速MCU采集并處理(li)數據，內置精(jing)密(mi)傳(chuan)感器(qi)進行補(bu)償，是(shi)檢測(ce)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)、液位(wei)(wei)信號(hao)(hao)(hao)，實(shi)現壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)、液位(wei)(wei)監測(ce)和(he)(he)控(kong)制的(de)(de)高(gao)精(jing)度設(she)備。廣(guang)泛(fan)使用(yong)在化(hua)工(gong)、機(ji)械、水文、電力(li)(li)(li)、環保等(deng)(deng)測(ce)量氣體、液體壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)的(de)(de)自動化(hua)系(xi)統中(zhong)(zhong)。因(yin)為(wei)調節(jie)方便靈活(huo)，安裝(zhuang)簡單(dan)，可(ke)以替代大(da)部分(fen)使用(yong)液位(wei)(wei)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)場(chang)合.壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)工(gong)作原理(li)：是(shi)當(dang)系(xi)統內壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)高(gao)于(yu)或(huo)(huo)低于(yu)額定的(de)(de)安全壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)時(shi)，感應器(qi)內碟(die)片(pian)瞬(shun)時(shi)發(fa)(fa)生(sheng)移(yi)(yi)動，通(tong)過連接(jie)導桿推(tui)動開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)接(jie)頭接(jie)通(tong)或(huo)(huo)斷開(kai)(kai)(kai)，當(dang)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)降至或(huo)(huo)升額定的(de)(de)恢復(fu)值時(shi)，碟(die)片(pian)瞬(shun)時(shi)復(fu)位(wei)(wei)，開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)自動復(fu)位(wei)(wei)，或(huo)(huo)者簡單(dan)的(de)(de)說是(shi)當(dang)被(bei)測(ce)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)超過額定值時(shi)，彈(dan)性元(yuan)件(jian)的(de)(de)自由(you)端產(chan)(chan)生(sheng)位(wei)(wei)移(yi)(yi)，直接(jie)或(huo)(huo)經過比較后(hou)推(tui)動開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)元(yuan)件(jian)，改變開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)元(yuan)件(jian)的(de)(de)通(tong)斷狀態，達(da)到(dao)控(kong)制被(bei)測(ce)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)的(de)(de)目(mu)的(de)(de)。壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)開(kai)(kai)(kai)關(guan)(guan)(guan)(guan)采用(yong)的(de)(de)彈(dan)性元(yuan)件(jian)有單(dan)圈(quan)彈(dan)簧管(guan)、膜(mo)片(pian)、膜(mo)盒及波紋管(guan)等(deng)(deng)。 

繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)（英文(wen)(wen)名稱(cheng)：relay）是(shi)(shi)(shi)一(yi)種(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)控(kong)(kong)制(zhi)器(qi)(qi)(qi)件，是(shi)(shi)(shi)當輸(shu)入量（激勵(li)量）的(de)(de)(de)變化(hua)達到(dao)規(gui)定要(yao)求時，在電(dian)(dian)(dian)(dian)(dian)(dian)氣輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中使(shi)被控(kong)(kong)量發生預定的(de)(de)(de)階躍(yue)變化(hua)的(de)(de)(de)一(yi)種(zhong)(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)。它具有控(kong)(kong)制(zhi)系統（又稱(cheng)輸(shu)入回(hui)(hui)路(lu)(lu)）和(he)被控(kong)(kong)制(zhi)系統（又稱(cheng)輸(shu)出回(hui)(hui)路(lu)(lu)）之(zhi)間的(de)(de)(de)互(hu)動(dong)(dong)關(guan)系。通常(chang)應(ying)用(yong)于(yu)自(zi)動(dong)(dong)化(hua)的(de)(de)(de)控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中，它實際上是(shi)(shi)(shi)用(yong)小電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)去控(kong)(kong)制(zhi)大電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)運作的(de)(de)(de)一(yi)種(zhong)(zhong)(zhong)“自(zi)動(dong)(dong)開關(guan)”。故(gu)在電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中起著自(zi)動(dong)(dong)調節、安全保護(hu)、轉換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)等作用(yong)。繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)線圈(quan)在電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中用(yong)一(yi)個長方(fang)框(kuang)符(fu)號(hao)(hao)表(biao)(biao)(biao)示，如果(guo)繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)有兩個線圈(quan)，就畫(hua)兩個并(bing)列的(de)(de)(de)長方(fang)框(kuang)。同(tong)時在長方(fang)框(kuang)內或(huo)長方(fang)框(kuang)旁標上繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)文(wen)(wen)字(zi)符(fu)號(hao)(hao)“J”。繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)觸(chu)點有兩種(zhong)(zhong)(zhong)表(biao)(biao)(biao)示方(fang)法：一(yi)種(zhong)(zhong)(zhong)是(shi)(shi)(shi)把(ba)它們直(zhi)接畫(hua)在長方(fang)框(kuang)一(yi)側，這種(zhong)(zhong)(zhong)表(biao)(biao)(biao)示法較(jiao)為直(zhi)觀。另一(yi)種(zhong)(zhong)(zhong)是(shi)(shi)(shi)按照電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)連接的(de)(de)(de)需要(yao)，把(ba)各(ge)個觸(chu)點分(fen)別畫(hua)到(dao)各(ge)自(zi)的(de)(de)(de)控(kong)(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中，通常(chang)在同(tong)一(yi)繼電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)觸(chu)點與線圈(quan)旁分(fen)別標注上相(xiang)同(tong)的(de)(de)(de)文(wen)(wen)字(zi)符(fu)號(hao)(hao)，并(bing)將(jiang)觸(chu)點組(zu)編上號(hao)(hao)碼(ma)，以(yi)示區別。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)一般(ban)由(you)鐵(tie)芯、線(xian)(xian)圈(quan)(quan)(quan)、銜(xian)(xian)鐵(tie)、觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)簧(huang)等組成的(de)(de)。只要(yao)在線(xian)(xian)圈(quan)(quan)(quan)兩(liang)端加上一定的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，線(xian)(xian)圈(quan)(quan)(quan)中(zhong)就會流過一定的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，從而(er)產生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)效應，銜(xian)(xian)鐵(tie)就會在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)力(li)吸(xi)引的(de)(de)作(zuo)(zuo)(zuo)用(yong)下(xia)(xia)(xia)克服返(fan)回(hui)彈簧(huang)的(de)(de)拉力(li)吸(xi)向(xiang)(xiang)鐵(tie)芯，從而(er)帶動(dong)銜(xian)(xian)鐵(tie)的(de)(de)動(dong)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)與靜(jing)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)（常(chang)開(kai)(kai)(kai)(kai)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)）吸(xi)合(he)。當線(xian)(xian)圈(quan)(quan)(quan)斷(duan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)的(de)(de)吸(xi)力(li)也(ye)隨之(zhi)消失，銜(xian)(xian)鐵(tie)就會在彈簧(huang)的(de)(de)反作(zuo)(zuo)(zuo)用(yong)力(li)返(fan)回(hui)原來(lai)的(de)(de)位置(zhi)(zhi)，使(shi)(shi)動(dong)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)與原來(lai)的(de)(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)（常(chang)閉(bi)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)）釋(shi)(shi)放。這樣(yang)吸(xi)合(he)、釋(shi)(shi)放，從而(er)達到(dao)了(le)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)的(de)(de)導通、切斷(duan)的(de)(de)目的(de)(de)。對于繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)“常(chang)開(kai)(kai)(kai)(kai)、常(chang)閉(bi)”觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)，可以這樣(yang)來(lai)區分：繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線(xian)(xian)圈(quan)(quan)(quan)未通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)處于斷(duan)開(kai)(kai)(kai)(kai)狀(zhuang)態的(de)(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)，稱為(wei)“常(chang)開(kai)(kai)(kai)(kai)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)”；處于接通狀(zhuang)態的(de)(de)靜(jing)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)稱為(wei)“常(chang)閉(bi)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)”。繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)一般(ban)有兩(liang)股電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，為(wei)低壓控制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路和高壓工作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路。當線(xian)(xian)圈(quan)(quan)(quan)通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)（電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓規格(ge)有ac380v、ac220v或dc220v、dc24v等）時(shi)(shi)，銜(xian)(xian)鐵(tie)及(ji)托板被(bei)鐵(tie)心吸(xi)引而(er)瞬時(shi)(shi)下(xia)(xia)(xia)移，使(shi)(shi)瞬時(shi)(shi)動(dong)作(zuo)(zuo)(zuo)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)接通或斷(duan)開(kai)(kai)(kai)(kai)。但(dan)是活(huo)塞(sai)桿(gan)和杠(gang)桿(gan)不能同(tong)時(shi)(shi)跟著銜(xian)(xian)鐵(tie)一起下(xia)(xia)(xia)落，因為(wei)活(huo)塞(sai)桿(gan)的(de)(de)上端連著氣(qi)室(shi)(shi)(shi)中(zhong)的(de)(de)橡(xiang)皮(pi)膜，當活(huo)塞(sai)桿(gan)在釋(shi)(shi)放彈簧(huang)的(de)(de)作(zuo)(zuo)(zuo)用(yong)下(xia)(xia)(xia)開(kai)(kai)(kai)(kai)始向(xiang)(xiang)下(xia)(xia)(xia)運動(dong)時(shi)(shi)，橡(xiang)皮(pi)膜隨之(zhi)向(xiang)(xiang)下(xia)(xia)(xia)凹，上面空氣(qi)室(shi)(shi)(shi)的(de)(de)空氣(qi)變(bian)得稀(xi)薄而(er)使(shi)(shi)活(huo)塞(sai)桿(gan)受到(dao)阻尼作(zuo)(zuo)(zuo)用(yong)而(er)緩慢下(xia)(xia)(xia)降。經過一定時(shi)(shi)間(jian)，活(huo)塞(sai)桿(gan)下(xia)(xia)(xia)降到(dao)一定位置(zhi)(zhi)，便通過杠(gang)桿(gan)推(tui)動(dong)延(yan)時(shi)(shi)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)動(dong)作(zuo)(zuo)(zuo)，使(shi)(shi)動(dong)斷(duan)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)斷(duan)開(kai)(kai)(kai)(kai)，動(dong)合(he)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)閉(bi)合(he)。從線(xian)(xian)圈(quan)(quan)(quan)通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)到(dao)延(yan)時(shi)(shi)觸(chu)(chu)(chu)(chu)(chu)(chu)點(dian)(dian)(dian)(dian)完成動(dong)作(zuo)(zuo)(zuo)，這段時(shi)(shi)間(jian)就是繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)延(yan)時(shi)(shi)時(shi)(shi)間(jian)。延(yan)時(shi)(shi)時(shi)(shi)間(jian)的(de)(de)長短可以用(yong)螺釘調(diao)節空氣(qi)室(shi)(shi)(shi)進氣(qi)孔(kong)的(de)(de)大小來(lai)改變(bian)。

互感器又稱為儀用變壓器，是電流互感器和電壓互感器的統稱。能將高電壓變成低電壓、大電流變成小電流，用于量測或保護系統。其功能主要是將高電壓或大電流按比例變換成標準低電壓（100V）或標準小電流（5A或1A，均指額定值），以便實現測量儀表、保護設備及自動控制設備的標準化、小型化。同時互感器還可用來隔開高電壓系統，以保證人身和設備的安全。
在供電用電的線路中，電流相差從幾安到幾萬安，電壓相差從幾伏到幾百萬伏。線路中電流電壓都比較高，如直接測量是非常危險的。為便于二次儀表測量需要轉換為比較統一的電流電壓，使用互感器起到變流變壓和電氣隔離的作用。
 顯示儀表大部分是指針式的電流電壓表，所以電流互感器的二次電流大多數是安培級的（如5等）。隨著時代發展，電量測量大多已經達到數字化，而計算機的采樣的信號一般為毫安級（0-5V、4-20mA等）。微型電流互感器二次電流為毫安級，主要起大互感器與采樣之間的橋梁作用。微型電流互感器稱之為“儀用電流互感器”。（“儀用電流互感器”有一層含義是在實驗室使用的多電流比精密電流互感器，一般用于擴大儀表量程。）
電(dian)流(liu)互感(gan)器(qi)原理線路圖微(wei)型(xing)電(dian)流(liu)互感(gan)器(qi)與變(bian)壓(ya)(ya)器(qi)類(lei)似也是根據電(dian)磁感(gan)應(ying)原理工作(zuo)，變(bian)壓(ya)(ya)器(qi)變(bian)換的是電(dian)壓(ya)(ya)而微(wei)型(xing)電(dian)流(liu)互感(gan)器(qi)變(bian)換的是電(dian)流(liu)罷了。繞(rao)組(zu)N1接被(bei)測(ce)電(dian)流(liu)，稱為(wei)一(yi)次繞(rao)組(zu)（或原邊繞(rao)組(zu)、初級繞(rao)組(zu)）；繞(rao)組(zu)N2接測(ce)量儀表，稱為(wei)二次繞(rao)組(zu)（或副邊繞(rao)組(zu)、次級繞(rao)組(zu)）。

SCHUNK雄克    cable jumper    KA BG08-L-3P-0300-PNP
SCHUNK雄克    電器件    301578
SCHUNK雄克    卡爪    0304374  DPG-PLUS 240-2-AS
SCHUNK雄克    備件    0304331 DPG-plus 100-1
SCHUNK雄克    接近開關    301511
SCHUNK雄克    備件    MMS 22-S-M8-PNP  0301432
SCHUNK雄克    卡盤    0305150 PZB+64-1
SCHUNK雄克    機械手    JGZ100-1-10  貨號：308940
SCHUNK雄克    機械手    GFS 16-90-L  0355498
SCHUNK雄克    磁性開關    301032 MMS22-SPM8GG4
SCHUNK雄克    刀柄    HOLDER HSK-A63-D06-150L (253 331)
SCHUNK雄克    磁性開關Magnetism sensor    0301032
SCHUNK雄克    氣缸    PZN-plus80-1-IS
SCHUNK雄克    備件    0303539
SCHUNK雄克    底盤夾具氣缸    PGN+200-2-SD  37371155
SCHUNK雄克    備件    PGN-PLUS 80-1
SCHUNK雄克    備件    SCH-IN40/S-M8
SCHUNK雄克    seal kit    0470219 FOR VERO-S NSE-90 UNILOCK
SCHUNK雄克    備件    MPZ 45 ID 0340530
SCHUNK雄克    氣缸    0324463
SCHUNK雄克    氣缸    SWA-110-000-000
SCHUNK雄克    通用機械手氣缸    PGN +40-AS/371082
SCHUNK雄克    seal kit    0302025 DSA PFH 150-200-250-300
SCHUNK雄克    2指氣爪    PGN+80-2 371451
SCHUNK雄克    Sensor    MMS22-S-M5-NPN-SA
SCHUNK雄克    氣缸    0302132_PSH32-1
SCHUNK雄克    備件    訂貨號：9939378
SCHUNK雄克    磁性開關    4030/555
SCHUNK雄克    傳感器    IN-60/S-M8 ID NO 301485
SCHUNK雄克    夾爪    PGN+125/2 371153
SCHUNK雄克    圓盤剪剪刃鎖緊器    13300401.7
SCHUNK雄克    備件    MMS-P22-S-M8-PNP
SCHUNK雄克    備件    DPG-PLUS 125-1-AS
SCHUNK雄克    氣缸    DPG100-AS
SCHUNK雄克    備件    GWB 44 307136
SCHUNK雄克    航空接頭    9935815
SCHUNK雄克    備件    Parallelgreifer PGN 40 plus
SCHUNK雄克    氣動卡盤chuck    0816125/TP125-26/Z120
SCHUNK雄克    三爪機械手    PZN 50/1 IS  300539
SCHUNK雄克    氣動夾爪    DPG-plus 125-1-AS ID:0304343
SCHUNK雄克    轉動單元    OSE-C34-0  0354321
SCHUNK雄克    夾爪氣缸    PZN125
SCHUNK雄克    控制盒    FPS-F5 訂貨號0301805
SCHUNK雄克    備件    0340014-MPG64
SCHUNK雄克    氣缸磁性開關    0301032 mms22 spm8 ed
SCHUNK雄克    氣動夾爪    PZN 64/1  0300310
SCHUNK雄克    碳刷    C80X 40*20*55
SCHUNK雄克    傳感器    MMS22-S-M8-PNP 0301032
SCHUNK雄克    氣缸    RH9010  0360141
SCHUNK雄克    備件    PGN-PLUS-380-1
SCHUNK雄克    O-ring    9980 058
SCHUNK雄克    安裝工具    340150
SCHUNK雄克    夾爪氣缸    PGN-PLUS-2OO-2
SCHUNK雄克    parallel-gripper    MPG20 AS    0340039
SCHUNK雄克    毛刷+配套    BRUSH TOOL A21-CB60M CUTTING FIBER
SCHUNK雄克    平行卡爪    0340040
SCHUNK雄克    備件    SWA-150-000-000 0302453
SCHUNK雄克    密封件seal    9907533/TP-125.58
SCHUNK雄克    備件    GWK125
SCHUNK雄克    氣缸    JGP 64-1-AS 308621
SCHUNK雄克    磁控開關    301032mms22-SPm8GH4
SCHUNK雄克    卡爪    PGNPLUS125-1
SCHUNK雄克    備件    FMS-ZBP50  訂貨號：301831
SCHUNK雄克    接近開關    FPS-M8 0301704
SCHUNK雄克    機械手    PGN+80-1 371461
SCHUNK雄克    線性模型    CLM 050-H025 0314038
SCHUNK雄克    電器件    0340010
SCHUNK雄克    夾爪    0308611
SCHUNK雄克    2-Finger-parallel gripper    LGP-40  312915
SCHUNK雄克    氣爪手指    MPG32  0340011
SCHUNK雄克    備件    E104   22*32*60mm
SCHUNK雄克    氣爪    MPG16  0340008
SCHUNK雄克    夾爪    303542
SCHUNK雄克    備件    0206287
SCHUNK雄克    連接電纜    301900
SCHUNK雄克    夾爪    JGZ160-1(ID:0308960)
SCHUNK雄克    夾緊氣缸    371124 PGN+100-1-P
SCHUNK雄克    AIR GRIPPER    OP15B    PZN50-1
SCHUNK雄克    旋轉氣缸    SRH+40-W   359282
SCHUNK雄克    備件    820004
SCHUNK雄克    氣缸    PZN160-1
SCHUNK雄克    備件    SWS-011 15
SCHUNK雄克    氣缸    0303061
SCHUNK雄克    備件    300347  PZB100
SCHUNK雄克    轉換器    HIGH4
SCHUNK雄克    固定夾塊    10354635
SCHUNK雄克    氣缸    SPU+30-W 361842
SCHUNK雄克    備件    0371106 PGN+300-1
SCHUNK雄克    機械手    PGN-plus 125-1 0371103
SCHUNK雄克    氣動手指    PWG80-302613
SCHUNK雄克    備件    FPS-M8 301704
SCHUNK雄克    磁性開關    MMS22-SPMB 0301032
SCHUNK雄克    平行夾抓    0371150
SCHUNK雄克    氣缸傳感器    MMS 22-S-M8-PNP 0301032
SCHUNK雄克    備件    0362024 SRU+35-W-180-3-4-M8
SCHUNK雄克    2指氣爪    PGN+80-2 371151
SCHUNK雄克    傳感器+光電管    傳感器EFS2000-11114 + 光電管30LZX12/1000/2000MSC  S1468
SCHUNK雄克    備件    MPG40 0340012
SCHUNK雄克    夾爪    PGNPLUS300-1(ID;0371106)
SCHUNK雄克    備件    PINZA 2 GRIFFE PARALLELE 4PZ ENGP C 0340011 MPG 32
SCHUNK雄克    備件    PGN+100-1-AS
SCHUNK雄克    氣缸    KGG-80 340310
SCHUNK雄克    底座    ACI2020R
SCHUNK雄克    刀柄    0263594
SCHUNK雄克    備件    PGN-300-2/IS訂貨號:370476
SCHUNK雄克    平行夾爪    0371080
SCHUNK雄克    碳刷    2*12.5*32*50
SCHUNK雄克    液壓卡盤    ROTA NCK  PLUS  315-91
SCHUNK雄克    氣缸    MPG40AS 340042
SCHUNK雄克    備件    MPG 25 AS
SCHUNK雄克    夾具    361422
SCHUNK雄克    前抓手氣缸    GMP 28-Z
SCHUNK雄克    機械手    PGN-Plus-80-2-AS  0371451
SCHUNK雄克    塊環系統附件    40102515
SCHUNK雄克    備件    MPZ 38IS 340522
SCHUNK雄克    備件    0340312 KGG 220
SCHUNK雄克    氣缸    0371462 PGN+100-1-IS
SCHUNK雄克    氣缸(夾爪)    PZN-160-1
SCHUNK雄克    備件    MMS22-S-M8-PNP
SCHUNK雄克    備件    PZN+64-1  303640
SCHUNK雄克    備件    0301474 IN40/S-M8
SCHUNK雄克    備件    30030953
SCHUNK雄克    備件    KGG 140 (340311)
SCHUNK雄克    接近開關    301469
SCHUNK雄克    備件    MMSK22-S-PNP
SCHUNK雄克    接近開關    0377720
SCHUNK雄克    汽缸    PGN80/1      370101
SCHUNK雄克    氣缸    P6N+64-1  37371092
SCHUNK雄克    備件    PGN 160/1 370104
SCHUNK雄克    夾爪氣缸    PGN200-1
SCHUNK雄克    氣缸    PGN+200-1 37371105（帶開關）
SCHUNK雄克    備件    SRU50.2-180-3
SCHUNK雄克    氣缸    GSM-P 32-E-090 304630
SCHUNK雄克    備件    KGG80
SCHUNK雄克    氣缸    MPG40AS 340042
SCHUNK雄克    備件    AS-FPS-PSH22-1
SCHUNK雄克    夾爪    JGZ160-1(ID;0308960)
SCHUNK雄克    旋轉氣缸    0361400  SRU-PLUS 20-W-90-3
SCHUNK雄克    磁性開關    MMS 22-S-M5-NPN-SA 0301449
SCHUNK雄克    電器件    AGE-F-XY-040
SCHUNK雄克    備件    0301623 MX1212
SCHUNK雄克    傳感器    IN 5-S-M8，NHS PNP
SCHUNK雄克    氣缸    P6N+64-1  37371092
SCHUNK雄克    液壓刀柄    204457
SCHUNK雄克    換型系統    SWA-011-000-000 0302317
SCHUNK雄克    備件    0206554
SCHUNK雄克    減徑套    GZB-S  20/12
SCHUNK雄克    氣缸磁性開關    0301032
SCHUNK雄克    備件    LMST 100-KT
SCHUNK雄克    夾爪    3800561731
SCHUNK雄克    備件    Parallelgreifer KGG 80
SCHUNK雄克    傳感器    APS-M1S 0302062
SCHUNK雄克    備件    MMS 22-S-M8-PNP-SA
SCHUNK雄克    夾爪氣缸    PGN+200/2 AS 371455
SCHUNK雄克    備件    301449
SCHUNK雄克    平行夾持器    MPG40AS 0340042
SCHUNK雄克    氣缸    CFS 16-18 355497
SCHUNK雄克    碳刷    E46F3 16*25*50MM
SCHUNK雄克    備件    0303308
SCHUNK雄克    卡盤    0305150 PZB+64-1
SCHUNK雄克    備件    PWG60S 302612
SCHUNK雄克    RQC公接頭    SWK-011-000-000-USA
SCHUNK雄克    氣缸(夾抓)    PGN+200/1  371105
SCHUNK雄克    旋轉夾爪    0313313 RP-2128-Z
SCHUNK雄克    磁性開關(guan)    MMS22-S-M8-PNP-SA  0301042

SCHUNK雄克氣缸CFS 16-18 355497翊霈供應

SCHUNK雄克氣缸CFS 16-18 355497翊霈供應