根據用戶提供的電氣原理圖及技術參數確定選
用防爆元件，然后確定外形及安裝尺寸
The choose the explosion-proof elements de-
pending on the schematic diagram of electricity
provided by user, consequently, to decide the
outline and mounting dimension.
電氣原理圖根據用戶提
供的系統圖繪制
The chematic diagram
should be drawed according
to users system diagram
