作业前，应检查并确认各部分导线连接良好，控制箱的外壳和接线板上的罩壳盖好。
Before the work, should inspect and confirm that various part of wire coupling is good, on control box's outer covering and tag board's cover housing cover is good.
此类（外卡锁式罩壳、两件式） 压力表采用独特的不锈钢外壳及测压部件的两件式设计，分为径向、下轴向和下轴向、U型卡子三种安装款式。
The pressure gauge is designed of special Stainless Steel case and two-piece type for pressure element. The mounting types are Bottom mounting, Lower back mounting and Lower back U clamp mounting.
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