此外，维修人员也要加强对信号测量法和替换法等多种方法的运用，以便有效排除系统故障。比如在对仪表问题进行快速判断时，就可以使用信号输入的形式。而利用综合校验仪将适合的信号输入到卡件中，就可以利用DCS显示对回路是否存在故障进行判断。采取同样的方法，也能够对调节阀输出信号进行分析，从而了解调节阀是否存在故障。而在日常检修工作中，维修人员也需要使用万用表等设备进行自动化仪表的测量，以便对仪表的潜在故障进行分析。
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