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
800 Amp Square D SL800 Sub Feed Lug USED
USED Mannesmann Rexroth VT-HNC100-1-13/134 HNC100
USED Allen Bradley 1785-L80B/E PLC-5 Processor Module
USED Control Gaging Inc. Model 820 Grinding Monitor
USED GE 2500 A Spectra Bus Duct FJGBAAAZACD2222 Busway