危险场所划分 Area classification

根据爆炸环境出现的频率和持续的时间把危险场所划分为不同的区域。

气体场所分为三个区域：0区、1区和2区。

Hazardous areas are classified into zones based upon the frequency of the occurrence and duration of an explosive gas atmosphere.

The gas area is classified into three zones: zone0、zone 1 and zone 2.

粉尘场所分为三个区域：20区、21区和22区。

The dust area is classified as three zones：zone20、zone 21 and zone 22.