Description
这大多是接地和防干扰措施注意不够引起的。如某厂有不少温度点测量不准，经检查发现是电缆桥架各段槽板之间有漆层，而各段槽板之间又没有用导线连接，由于没有屏蔽作用，干扰信号串入了热电偶的测量回路中，导致温度测量不准的故障。
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