1756-OW16I/A
1756-OW16I/A
1756-OW16I/A
《聯(lián)系人；歐先生》
西門子的全集成一體化控制系統(tǒng)在危險區(qū)的本安防爆應用方式上具有很大的靈活性。具有大量安全防爆產品可供用戶設計成為滿足不同要求的本安防爆系統(tǒng)，極大的方便了用戶的選擇和應用，用戶可以根據自己的實際情況和資金情況涉及建立最符合自己要求的防爆控制系統(tǒng)。
本文就西門子防爆系統(tǒng)的幾種應用方式進行了探討和總結，以求對防爆用戶的設計應用有所幫助啟發(fā)。
2. 爆炸性危險場所的劃分
在危險場所中安全地使用爆炸性環(huán)境用電氣設備的前題條件是合理的選擇、正確的安裝和考慮系統(tǒng)日常生產運行時必要的維護。因此應根據其使用所在的危險場所的性質來合理的選擇防爆電氣設備。
危險場所就是由于存在著易燃易爆性氣體、蒸氣、液體、可燃性粉塵或者可燃性纖維而具有引起火災或者爆炸危險的場所。典型的危險場所，如石油化工行業(yè)中爆炸性物質的生產、加工和貯存過程中所形成的環(huán)境。對爆炸性氣體環(huán)境，按場所中危險物質存在時間的長短，將爆炸性氣體環(huán)境危險區(qū)域劃分為三個區(qū)，即分為Ex.Zone0區(qū)、Ex.Zone1區(qū)和Ex.Zone2區(qū)。
Ex.Zone0區(qū)：連續(xù)出現(xiàn)或長期出現(xiàn)爆炸性氣體混和物的環(huán)境。
Ex.Zone1區(qū)：在正常運行時可能出現(xiàn)爆炸性氣體混和物的環(huán)境。
Ex.Zone2區(qū)：在正常運行時不可能出現(xiàn)爆炸性氣體混和物的環(huán)境或即使出現(xiàn)也僅是短時存在的爆炸性氣體混和物的環(huán)境。
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