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redking80
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樓主  發(fā)表于: 2015-10-15 12:35
接三線(xiàn)型液位計是V+和I+并接接到液位計信號正上，COM上接液位計信號負，哪二線(xiàn)制液位計怎么接線(xiàn)V+接?I+接?

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