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一次西门子压力变送器故障的简单排除

用户反映,西门子最新的P320智能压力变送器测量故障。

现场观察,四台差压变送器均有报警,查找对应报警代码为:

一次西门子压力变送器故障的简单排除

重新启动后,设备报警消失,但仍然显示有较大的压力数值,怀疑膜片受到外力的作用,插下检查。发现法兰之间的垫片方向安装错误。导致测量膜片一直处于受力状态。重新安装后正常。现场安装见下图。

一次西门子压力变送器故障的简单排除
整体安装图

上图为整体安装图,下图拆除法兰,发现垫片安装错误

一次西门子压力变送器故障的简单排除
错误的安装方向

调整安装方向,测量正常。

总结:对于过程仪表来说,安装是第一步,也是重要的一步。正确的安装才能进行正确的测量

原创文章,作者:梦南圆,如若转载,请注明出处:https://mnyuan.cn/?p=1323

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