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7.1 Completely close all valves on the level gauge (Valve 1 - 4)；
7.2 缓缓开启储罐与液位计之间的法兰阀（阀 1、阀 3）；
7.2 Slowly open the flange valve between the tank and the level gauge (Valve 1, Valve 3)；
7.3 缓缓开启液位计上部阀门（阀 2）；
7.3 Slowly open the upper valve of the level gauge (Valve 2)；
7.4 缓缓开启液面计下部阀门使介质流入液位计内（阀 4）；
7.4 Slowly open the lower valve of the level gauge to allow the medium to flow into the level gauge
(Valve 4)；
7.5 完全开启液面计的上部阀门和下部阀门(阀 2、阀 4)
7.5 Fully open the upper and lower valves of the gauge (Valve 2, Valve 4)
8
故障分析与排除
8 Failure Analysis and Elimination
故障现象
原因分析
排除方法
液位计内无液位
钢珠将阀口封住
关闭阀门后缓慢的开启阀门，待压力平稳后将阀门
完全开启。
Fault Phenomenon
Reason
Method of Exclusion
No liquid level in the level gauge
Steel ball seals the
valve port
Slowly open the valve after closing
the valve, and fully open the valve
after the pressure is stable
9
维修
9 Maintenance
9.1
警告
9.1 Warning
在拆卸前应注意危险的过程条件,如:容器内的压力、高温、腐蚀性的或有毒的介质等。
Attention should be paid to hazardous process conditions, such as pressure inside the vessel, high
