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tjdsllq
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樓主  發(fā)表于: 2008-03-13 09:06
電動(dòng)閥是不是都有3根線(xiàn)（電纜線(xiàn)），電源線(xiàn)+控制信號輸入線(xiàn)+閥位反饋信號線(xiàn) ？
還是有的電動(dòng)閥只有2根線(xiàn)？
ctgdcs
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1樓  發(fā)表于: 2008-03-19 21:21
我們這里用的電動(dòng)閥它的位置反饋給DCS用來(lái)比較和顯示用于閉環(huán)控制
ctgdcs
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2樓  發(fā)表于: 2008-03-19 21:24
我們這里用的是霍尼韋爾、鞍山的都有三根線(xiàn)

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