費斯托電(dian)磁閥(fa)是氣(qi)動(dong)調(diao)節(jie)(jie)閥(fa)的(de)(de)(de)關鍵附件(jian)之一，其作用是把調(diao)節(jie)(jie)裝置輸(shu)出的(de)(de)(de)電(dian)信(xin)號(hao)變成驅動(dong)調(diao)節(jie)(jie)閥(fa)動(dong)作的(de)(de)(de)氣(qi)信(xin)號(hao)。它(ta)具有閥(fa)門定位(wei)功(gong)能，既克(ke)服閥(fa)桿摩擦(ca)力(li)，又(you)可以克(ke)服因介(jie)質(zhi)(zhi)壓力(li)變化而引起的(de)(de)(de)不平衡力(li)，從而能夠使(shi)閥(fa)門快速的(de)(de)(de)跟隨，并對應于調(diao)節(jie)(jie)器輸(shu)出的(de)(de)(de)控制信(xin)號(hao)，實(shi)現(xian)調(diao)節(jie)(jie)閥(fa)快速定位(wei)，提升其調(diao)節(jie)(jie)品質(zhi)(zhi)。隨著智能儀表技術(shu)的(de)(de)(de)發展，微(wei)電(dian)子技術(shu)廣泛應用在傳統儀表中，大(da)大(da)提高了儀表的(de)(de)(de)功(gong)能與性能。

費斯托電磁閥(fa)(fa)是控(kong)制(zhi)(zhi)(zhi)閥(fa)(fa)的主(zhu)要(yao)附件.它將閥(fa)(fa)桿位(wei)(wei)移信(xin)(xin)號(hao)作(zuo)為(wei)輸入的反饋測(ce)量(liang)信(xin)(xin)號(hao),以控(kong)制(zhi)(zhi)(zhi)器(qi)輸出信(xin)(xin)號(hao)作(zuo)為(wei)設定(ding)信(xin)(xin)號(hao)，進(jin)行(xing)比較(jiao)，當兩(liang)者有(you)偏(pian)差時，改變其到執(zhi)行(xing)機構(gou)的輸出信(xin)(xin)號(hao)，使執(zhi)行(xing)機構(gou)動(dong)作(zuo)，建立(li)了閥(fa)(fa)桿位(wei)(wei)移倍與(yu)控(kong)制(zhi)(zhi)(zhi)器(qi)輸出信(xin)(xin)號(hao)之間(jian)的一(yi)一(yi)對應(ying)關(guan)系。因此，閥(fa)(fa)門定(ding)位(wei)(wei)器(qi)組(zu)成以閥(fa)(fa)桿位(wei)(wei)移為(wei)測(ce)量(liang)信(xin)(xin)號(hao)，以控(kong)制(zhi)(zhi)(zhi)器(qi)輸出為(wei)設定(ding)信(xin)(xin)號(hao)的反饋控(kong)制(zhi)(zhi)(zhi)系統(tong)。該控(kong)制(zhi)(zhi)(zhi)系統(tong)的操縱變量(liang)是閥(fa)(fa)門定(ding)位(wei)(wei)器(qi)去執(zhi)行(xing)機構(gou)的輸出信(xin)(xin)號(hao)。

電磁閥適用
性管路中的(de)(de)流體(ti)必(bi)須和(he)(he)選(xuan)用的(de)(de)電(dian)(dian)磁(ci)閥(fa)系列型號中標(biao)定(ding)(ding)的(de)(de)介質(zhi)致(zhi)。流體(ti)的(de)(de)溫(wen)度(du)必(bi)須小于(yu)選(xuan)用電(dian)(dian)磁(ci)閥(fa)的(de)(de)標(biao)定(ding)(ding)溫(wen)度(du)。電(dian)(dian)磁(ci)閥(fa)允許液體(ti)粘度(du)般(ban)在(zai)20CST以下，大(da)于(yu)20CST應(ying)注(zhu)明。工(gong)作壓差(cha)(cha)(cha)(cha)，管路zui高壓差(cha)(cha)(cha)(cha)在(zai)小于(yu)0.04MPa時應(ying)選(xuan)用如ZS,2W,ZQDF,ZCM系列等直動(dong)式和(he)(he)分步直動(dong)式；zui低(di)工(gong)作壓差(cha)(cha)(cha)(cha)大(da)于(yu)0.04MPa時可(ke)選(xuan)用導式壓差(cha)(cha)(cha)(cha)式電(dian)(dian)磁(ci)閥(fa)；zui高工(gong)作壓差(cha)(cha)(cha)(cha)應(ying)小于(yu)電(dian)(dian)磁(ci)閥(fa)的(de)(de)zui大(da)標(biao)定(ding)(ding)壓力；般(ban)電(dian)(dian)磁(ci)閥(fa)都是單向(xiang)工(gong)作，因此要(yao)注(zhu)意是否有(you)反(fan)壓差(cha)(cha)(cha)(cha)，如有(you)安裝止回閥(fa)。流體(ti)清(qing)潔度(du)不高時應(ying)在(zai)電(dian)(dian)磁(ci)閥(fa)前安裝過濾器(qi)，般(ban)電(dian)(dian)磁(ci)閥(fa)對介質(zhi)要(yao)求清(qing)潔度(du)要(yao)好。注(zhu)意流量孔徑和(he)(he)接(jie)管口(kou)徑；電(dian)(dian)磁(ci)閥(fa)般(ban)只有(you)開關兩(liang)位控(kong)制(zhi)；條件(jian)允許請安裝旁路管，便于(yu)維(wei)修(xiu)；有(you)水錘現象時要(yao)定(ding)(ding)制(zhi)電(dian)(dian)磁(ci)閥(fa)的(de)(de)開閉時間調節。注(zhu)意環(huan)境溫(wen)度(du)對電(dian)(dian)磁(ci)閥(fa)的(de)(de)影(ying)響電(dian)(dian)源(yuan)電(dian)(dian)流和(he)(he)消耗(hao)功率應(ying)根據(ju)輸出容量選(xuan)取，電(dian)(dian)源(yuan)電(dian)(dian)壓般(ban)允許±10%左右，必(bi)須注(zhu)意交(jiao)流起動(dong)時VA值較(jiao)高。

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