FBM216b FOXBORO

FOXBORO FBM219
FOXBORO P0917MF
FOXBORO P0916FJ
FOXBORO FCP270 P0917YZ
FOXBORO  Y-3023-2-H00AA
GE WESDACD20PS

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Description

总会有外部干扰信号侵入。此干扰主要有两种途径:一是通过变送器供电电源或共用信号仪表的供电电源串入的电网干扰,这往往被忽视;二是信号线受空间电磁辐射感应的干扰,即信号线上的外部感应干扰,这是很严重的。由信号引入干扰会引起I/O信号工作异常和测量精度大大降低,严重时将引起元器件损伤。


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