費斯(si)托電磁(ci)閥是(shi)氣動(dong)調節(jie)閥的(de)關鍵附(fu)件(jian)之(zhi)一，其作(zuo)用是(shi)把調節(jie)裝(zhuang)置(zhi)輸(shu)出的(de)電信(xin)號變成(cheng)驅動(dong)調節(jie)閥動(dong)作(zuo)的(de)氣信(xin)號。它(ta)具有(you)閥門定位(wei)功(gong)能，既克服閥桿(gan)摩擦力(li)，又(you)可以克服因介質壓力(li)變化而引起(qi)的(de)不平衡力(li)，從而能夠(gou)使閥門快速的(de)跟隨(sui)，并對應于(yu)調節(jie)器輸(shu)出的(de)控制信(xin)號，實(shi)現調節(jie)閥快速定位(wei)，提升其調節(jie)品質。隨(sui)著智能儀表(biao)技(ji)術的(de)發展，微電子技(ji)術廣(guang)泛應用在(zai)傳統儀表(biao)中，大(da)(da)大(da)(da)提高(gao)了儀表(biao)的(de)功(gong)能與性能。

費斯托(tuo)電磁閥(fa)是控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)閥(fa)的(de)(de)主要附件.它將閥(fa)桿(gan)位(wei)移(yi)信(xin)(xin)號(hao)作為(wei)輸(shu)(shu)入的(de)(de)反饋測量信(xin)(xin)號(hao),以控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)器輸(shu)(shu)出(chu)信(xin)(xin)號(hao)作為(wei)設(she)定信(xin)(xin)號(hao)，進行比較，當兩者有偏差(cha)時，改變(bian)其到(dao)執行機構的(de)(de)輸(shu)(shu)出(chu)信(xin)(xin)號(hao)，使執行機構動作，建(jian)立了閥(fa)桿(gan)位(wei)移(yi)倍(bei)與控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)器輸(shu)(shu)出(chu)信(xin)(xin)號(hao)之間的(de)(de)一一對應關系。因(yin)此，閥(fa)門定位(wei)器組成以閥(fa)桿(gan)位(wei)移(yi)為(wei)測量信(xin)(xin)號(hao)，以控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)器輸(shu)(shu)出(chu)為(wei)設(she)定信(xin)(xin)號(hao)的(de)(de)反饋控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統。該控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統的(de)(de)操(cao)縱變(bian)量是閥(fa)門定位(wei)器去執行機構的(de)(de)輸(shu)(shu)出(chu)信(xin)(xin)號(hao)。

電磁閥適用
性管(guan)路中的(de)(de)流體(ti)(ti)必須(xu)(xu)和選(xuan)用(yong)的(de)(de)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)系列型號中標(biao)(biao)定(ding)的(de)(de)介質致(zhi)。流體(ti)(ti)的(de)(de)溫(wen)度(du)必須(xu)(xu)小(xiao)于(yu)選(xuan)用(yong)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)的(de)(de)標(biao)(biao)定(ding)溫(wen)度(du)。電(dian)(dian)磁(ci)(ci)閥(fa)(fa)允許液(ye)體(ti)(ti)粘度(du)般在20CST以下(xia)，大(da)于(yu)20CST應(ying)(ying)注(zhu)(zhu)明。工(gong)作(zuo)(zuo)壓(ya)(ya)差，管(guan)路zui高(gao)壓(ya)(ya)差在小(xiao)于(yu)0.04MPa時(shi)(shi)應(ying)(ying)選(xuan)用(yong)如ZS,2W,ZQDF,ZCM系列等(deng)直(zhi)動式和分步直(zhi)動式；zui低工(gong)作(zuo)(zuo)壓(ya)(ya)差大(da)于(yu)0.04MPa時(shi)(shi)可(ke)選(xuan)用(yong)導式壓(ya)(ya)差式電(dian)(dian)磁(ci)(ci)閥(fa)(fa)；zui高(gao)工(gong)作(zuo)(zuo)壓(ya)(ya)差應(ying)(ying)小(xiao)于(yu)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)的(de)(de)zui大(da)標(biao)(biao)定(ding)壓(ya)(ya)力；般電(dian)(dian)磁(ci)(ci)閥(fa)(fa)都(dou)是單向工(gong)作(zuo)(zuo)，因此要(yao)注(zhu)(zhu)意是否有(you)反壓(ya)(ya)差，如有(you)安(an)裝止回(hui)閥(fa)(fa)。流體(ti)(ti)清潔度(du)不高(gao)時(shi)(shi)應(ying)(ying)在電(dian)(dian)磁(ci)(ci)閥(fa)(fa)前安(an)裝過濾器，般電(dian)(dian)磁(ci)(ci)閥(fa)(fa)對(dui)(dui)介質要(yao)求清潔度(du)要(yao)好(hao)。注(zhu)(zhu)意流量(liang)孔徑和接(jie)管(guan)口徑；電(dian)(dian)磁(ci)(ci)閥(fa)(fa)般只(zhi)有(you)開關兩位控制(zhi)；條件允許請安(an)裝旁路管(guan)，便于(yu)維修；有(you)水錘現(xian)象時(shi)(shi)要(yao)定(ding)制(zhi)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)的(de)(de)開閉時(shi)(shi)間(jian)調(diao)節。注(zhu)(zhu)意環境溫(wen)度(du)對(dui)(dui)電(dian)(dian)磁(ci)(ci)閥(fa)(fa)的(de)(de)影響電(dian)(dian)源(yuan)電(dian)(dian)流和消耗功(gong)率應(ying)(ying)根據輸出容量(liang)選(xuan)取，電(dian)(dian)源(yuan)電(dian)(dian)壓(ya)(ya)般允許±10%左右，必須(xu)(xu)注(zhu)(zhu)意交流起動時(shi)(shi)VA值較高(gao)。

MFH-5/2-D-1-C
MFH-5/3G-D-1-C
MFH-5/3E-D-1-C
MFH-5/3B-D-1-C
MFH-5/2-D-1-FR-C
MFH-5/2-D-2-S-C
MFH-5/3G-D-2-S-C
MFH-5/3E-D-2-S-C
MFH-5/3B-D-2-S-C
MFH-5/2-D-3-S-C
MFH-5/3G-D-3-S-C
MFH-5/3E-D-3-S-C
MFH-5/3B-D-3-S-C
MFH-5/2-D-2-FR-C
MFH-5/2-D-3-FR-C
MFH-5/2-D-2-C
MFH-5/3G-D-2-C
MFH-5/3E-D-2-C
MFH-5/3B-D-2-C
MFH-5/2-D-3-C
MFH-5/3G-D-3-C
MFH-5/3E-D-3-C
MFH-5/3B-D-3-C
MFH-5/2-D-1-S-C
MFH-5/3G-D-1-S-C
MFH-5/3E-D-1-S-C
MFH-5/3B-D-1-S-C

MFH-5/3E-1/4-B
MFH-5/3G-1/4-B
MFH-5/3B-1/4-B
MFH-5/3E-1/8-B
MFH-5/3G-1/8-B
MFH-5/3B-1/8-B
MFH-5-1/8-L-B
MFH-5-1/8-L-S-B
MFH-5/3G-1/8-S-B
MFH-5/3E-1/8-S-B
MFH-5/3B-1/8-S-B
MFH-5/3G-1/4-S-B
MFH-5/3E-1/4-S-B
MFH-5/3B-1/4-S-B