适用范围

PXK系列正压型仪表/配电柜


，适用于石油


、化工




、海上钻井平台

、医药生物、轻纺、食品等爆炸性环境中
，主要原理为



：系用隔离介质是洁净的空气
，通过各种保护装置


，使正压腔内闻的保护气体相对于外部危险环境大气有一定的正压，从而阻止易燃混合物进入正压起动壳体

PXK Series positive pressure instruments/power distribution cabinet,suitable for the explosive environment such as petroleum and chemical industry,off-shore drilling platform,medical biology,light &textile industry and food-stuff etc.Main principle is:the isolating medium is the clean air,Various protection devices in the conbinet makes the protective gas inside the positive chamber to have definite positive pressure relative to the external hazardous ambient atmosphere,thus prevent the combustible mixtures from being entered into the starting casing which has the positive pressure

该产品具有自动延时换气
，欠压自动补气、报警
、失压自动断电等功能
This product has such functions as auto matic time delayed purging,automatic air supplementing and slarming,when underp[ressure,and auto matic power disconnecting wher no air

产品特点

产品防爆标志
：Expd Ⅱ BT4 Exped Ⅱ CT4(不含乙炔)
Explosion-proof mark of product:Expd Ⅱ BT4 Exped Ⅱ CT4(not including acetylene)
气源压力要求：0.1-0.8Mpa
Requirement of air supply pressure:0.1-0.8Mpa
使用环境温度
：-20～+60℃
Working ambient temperature:-20～+60℃
主柜压力<150PA时自动补气
：>240Pa 时补气结束
When pressure of main cabinet<150Pa,it auto matically make air-supplementing;when pressure of main cabinet>240Pa

，air-supplementing is finished
主柜压力≤100pa 自动报警
When pressure of main cabinet≤100pa,it make automatic alarming
主柜压力≤50pa 自动切断电源
When pressure of main cabinet<50Pa



，it auto matically disconnect the power supply
仪表供电前，对柜内原剩空气自动进行换气
Before supple power to the instruments,automatically make purging for the remaining air in the cabinet

型号含义

外形及安装尺寸