1，超声波清洗机振子受潮：可以用兆欧表检查，其中2脚为超声波换能器的正极， 3脚是换能器的负极而且与换能器的外壳相连。检查，2 3 脚间的绝缘 电阻值就可以判断基本情况，一般要求绝缘 电阻大于30兆欧以上。如果达不到这个绝缘 电阻值，一般是换能器受潮，可以把换能器整体（不包括喷塑外壳）放进烘箱设定100 ℃左右烘干3小时或者使用电吹风去潮至阻 值正常为止。（对于密封式换能器，需要先 用手持砂轮机将不锈钢外壳剖开）

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