TVB-1202-1ANET 1381-647980-12系统模块卡件
E组含有金属粉尘的大气，包括铝、镁及其商业合金，以及具有类似危险特性的其他金属。F组含有炭黑、煤尘或煤饼粉尘的大气。G组含有面粉、淀粉或谷物粉尘的大气。典型的I类位置•炼油厂和汽油储存和分配区域。•将易燃液体用于零件清洗或其他操作的工业企业。•利用天然气和石油生产化学品的石化公司。•可能存在清洗液蒸汽的干洗厂。•在产品喷涂区域喷涂油漆或塑料的公司飞机库和燃料服务区公用气厂，以及涉及液化石油气或天然气储存和处理的操作。典型的II类位置•谷物升降机、面粉和饲料磨机。•制造、使用或储存镁铝粉末的工厂具有化学或冶金工艺的工厂、塑料、药品和木材等的生产商•淀粉或糖果的生产商香料研磨植物、糖植物和可可植物。注意：更换组件可能会损害本质安全。罗克韦尔自动化出版物42DR-IN001B-EN-P-2016年5月3本质安全传感器•选煤厂和其他碳处理或加工区域。典型的III类位置•纺织厂、轧棉厂、棉花种子厂和亚麻加工厂。•任何塑造、粉碎或切割木材并产生锯屑或飞屑的植物。5500系列42DRP型照相头和42DTB电源底座（已拆除盖子），实际连接图见第7页。说明42DR系列5500 QD本质安全型微型自给式光电控制器各包括一个组合调制状态指示器光源、高速硅光电探测器和双开集电极销售状态输出，数字控制系统或E-M控制继电器。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
