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原帖由 <i>sorrento</i> 于 2008-9-3 03:38 PM 发表<br />
防爆的意思是不会因为开关灯动作而引爆可燃气体,似乎跟外壳强度无关。<br />
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主要是防溶剂类气体腐食性入侵,精确点说 TIKKA XP 的防爆版只合用于GROUP C,D类2类气体,EOS是可用在GROUP A,B,C,D 4类气体环境中。这样会使外壳不能采用一般常见的会受溶剂溶解的热塑性材质。
补充点气体分类说明:
Class 1 locations are made hazardous by the presence of flammable gases, liquids or vapors. Div 1 designates an environment where ignitable concentrations of flammable gases, liquids, vapors or dusts can exist some of the time or all of the time under normal operating conditions. Group A - Acetylene; Group B - Hydrogen; Group C - Ethylene, Carbon Monoxide; Group D - Propane, Gasoline, Naphtha, Benzene, Butane, Ethyl Alcohol, Acetone, Methane.
[ 本帖最后由 CookieMania 于 2008-9-3 17:13 编辑 ] |
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