PA总线仪表在水泥生产线窑头、窑尾的温度和压力检测中已有很多应用,生产中总会碰到各类干扰问题,而且干扰的表现和处理方式都不尽相同。某条5 000t/d的生产线调试中出现了PA总线干扰问题,具体表现为窑头共有3条PA总线,每条PA总线上面只能挂6块PA表,一旦超过6块就极不稳定,甚至整条总线通讯中断,但窑尾PA总线仪表很稳定。出现此故障后,我们与仪表厂家、DCS厂家、设计院以 PA bus instrumentation in the cement production line kiln, kiln tail temperature and pressure testing has many applications, the production will always encounter various types of interference problems, but also the performance of interference and treatment are not the same. A 5 000 t / d production line debug PA bus interference appears, the specific performance of the kiln head there are 3 PA bus, PA bus can only hang above six PA table, once more than 6 is very unstable, Even the entire bus communication is interrupted, but kiln PA bus instrument is very stable. After this failure, we and instrument manufacturers, DCS manufacturers, design institutes