There are two types of explosion-proof instruments, safety type and flame-proof type, which constitute intrinsic safety control system and flame-proofcontrol system respectively.
关于防爆有“本安”和“隔爆”类仪表，它们分别构成“本安控制系统”和“隔爆系统”。
3
Air compressor Surge proofcontrol is key in compress section in ASU, Surge proofcontrol affect the air compressor itself safety, therefor air compressor configuration is important.