TVB-1202-1ANET 1381-647980-12系統模塊卡件
E組含有金屬粉塵的大氣，包括鋁、鎂及其商業合金，以及具有類似危險特性的其他金屬。F組含有炭黑、煤塵或煤餅粉塵的大氣。G組含有面粉、淀粉或谷物粉塵的大氣。典型的I類位置?煉油廠和汽油儲存和分配區域。?將易燃液體用于零件清洗或其他操作的工業企業。?利用天然氣和石油生產化學品的石化公司。?可能存在清洗液蒸汽的干洗廠。?在產品噴涂區域噴涂油漆或塑料的公司飛機庫和燃料服務區公用氣廠，以及涉及液化石油氣或天然氣儲存和處理的操作。典型的II類位置?谷物升降機、面粉和飼料磨機。?制造、使用或儲存鎂鋁粉末的工廠具有化學或冶金工藝的工廠、塑料、藥品和木材等的生產商?淀粉或糖果的生產商香料研磨植物、糖植物和可可植物。注意：更換組件可能會損害本質安全。羅克韋爾自動化出版物42DR-IN001B-EN-P-2016年5月3本質安全傳感器?選煤廠和其他碳處理或加工區域。典型的III類位置?紡織廠、軋棉廠、棉花種子廠和亞麻加工廠。?任何塑造、粉碎或切割木材并產生鋸屑或飛屑的植物。5500系列42DRP型照相頭和42DTB電源底座（已拆除蓋子），實際連接圖見第7頁。說明42DR系列5500 QD本質安全型微型自給式光電控制器各包括一個組合調制狀態指示器光源、高速硅光電探測器和雙開集電極銷售狀態輸出，數字控制系統或E-M控制繼電器。42DR系列5500型控制器
Group E Atmospheres containing metal dust, including aluminum, magnesium, and their commercial alloys, and other metals of similarly hazardous characteristics. Group F Atmospheres containing carbon black, coal or cake dust. Group G Atmospheres containing flour, starch, or grain dusts. Typical Class I Locations ? Petroleum refineries and gasoline storage and dispensing areas. ? Industrial firms that use flammable liquids in dip tanks for parts cleaning or other operations. ? Petrochemical companies that manufacture chemicals from gas and oil. ? Dry cleaning plants where vapors from cleaning fluids can be present. ? Companies that have spraying areas where they coat products with paint or plastics. ? Aircraft hangars and fuel servicing areas. ? Utility gas plants, and operations involving storage and handling of liquified petroleum gas or natural gas. Typical Class II Locations ? Grain elevators, flour, and feed mills. ? Plants that manufacture, use, or store magnesium of aluminum powders. ? Plants that have chemical or metallurgical processes, producers of plastics, medicines, and firewoods, etc. ? Producers of starch or candies. ? Spice-grinding plants, sugar plants, and cocoa plants. ATTENTION: Substitution of components may impair intrinsic safety. Rockwell Automation Publication 42DR-IN001B-EN-P - May 2016 3 Intrinsically Safe Sensor ? Coal preparation plants and other carbon-handling or processing areas. Typical Class III Locations ? Textile mills, cotton gins, cotton seed mills, and flax processing plants. ? Any plant that shapes, pulverizes or cuts wood and creates sawdust or flyings. Series 5500 Type 42DRP Photohead and 42DTB Power Base with Covers Removed See page 7, for actual connection diagrams. Description Type 42DR Series 5500 QD Intrinsically Safe miniature selfcontained Photoelectric controls each consist of a combination modulated status indicator light source, high speed silicon photodetector and dual open collector sold-state outputs which can be used to interface with programmable controllers, computers, digital control systems or E-M control relays via Intrinsic Safety Zener Diode Barriers. The Type 42DR Series 5500 controls
