產(chǎn)品名稱：AB DCS 系統(tǒng)模塊
產(chǎn)品型號：2094-BM01-S
產(chǎn)品參數(shù)：2094-BM01-S
產(chǎn)品功能：2094-BM01-S

2.DCS存在的問題
(1)1對1結(jié)構(gòu)。1臺儀表，1對傳輸線，單向傳輸1個信號。這種結(jié)構(gòu)造成接線龐雜、工程周期長、安裝費用高、維護困難。
(2)可靠性差。模擬信號傳輸不僅精確度低，且易受干擾。為此采用各種措施提高抗干擾性和傳輸精確度，其結(jié)果是增加了成本。
(3)失控狀態(tài)。操作員在控制室既不了解現(xiàn)場模擬儀表的工作狀況，也不能對其進行參數(shù)調(diào)整，更不能預(yù)測事故，導致操作員對其處于失控狀態(tài)。因操作員不能及時發(fā)現(xiàn)現(xiàn)場儀表故障，而發(fā)生事故已屢見不鮮。
(4)互操作性差。盡管模擬儀表已統(tǒng)一4～20mA信號標準，可大部分技術(shù)參數(shù)仍由制造商自定，致使不同品牌儀表無法互換。因此導致用戶依賴制造廠，無法使用性能價格比最優(yōu)的配套儀表，甚至出現(xiàn)個別制造商壟斷市場的局面。

廈門興銳達自動化設(shè)備有限公司

聯(lián)系人：劉錦玲 銷售經(jīng)理
熱  線：0592-5361112
手  機：15359273791
QQ:      2859249356
EMAIL:2859249356@qq.com

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