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A complete English edition of this article has not been published. The complete available Chinese version is shown below.

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Field troubleshooting5 min readContent language: ChineseUpdated 23 October 2026

压力读数下雨、冲洗后间歇异常,是不是传感器进水了?

先检查完整连接与通气路径,不能只因外壳标有防护等级就排除潮气问题。

先建立与水作用的关联

雨后或冲洗后异常,可能与接头密封、电缆端进水、结露或表压参考通气路径有关,也可能来自接线盒和采集端。应记录发生前后的环境与信号,确认是否重复出现;单凭时间相关不能直接判断水已进入传感器内部。

检查防护条件有没有被破坏

插头密封缺失、螺帽未锁紧、线缆破皮或电缆向上引水都应检查。需要通气的结构还要保护参考通道,不能随手灌胶或封孔。实际使用条件必须与本体、配对插头及安装说明共同核对,不能只认铭牌上的一个 IP 数字。

反馈完整安装而非单只器件

向道威斯顿提供接头和线缆走向照片、冲洗方式、浸水情况以及干湿时的端电压和输出记录。隔离设备后按允许方法处理外部问题;若怀疑封装损伤,应评估返检。临时吹干后恢复显示不代表原防护能力已经得到验证。

现场核对:区分外部水迹与内部受潮

  • 记录下雨、冲洗、浸水和昼夜结露情况,比较故障是否随环境反复发生。
  • 检查配对插头、密封件、锁紧与电缆完好状态,核对整体装配要求。
  • 追查电缆端、接线盒和通气路径的水源,不只观察传感器壳体表面。
  • 清洁或干燥处理遵守设备文件,保留处理前后数据,不用临时封胶替代防护验证。

假设例子:换了本体,水仍可能沿旧电缆进入

假设现场换过传感器后雨天故障仍重复,原因可能在保留下来的电缆、插头或接线盒,而非每一只本体都存在相同缺陷。应检查水是否沿线路进入、连接处是否积水,以及参考通气端是否处于不合适环境。重复换件而不记录水作用路径,可能一直保留真正的影响条件。

销售可以请客户拍摄从传感器到接线端的完整路线,而不是只拍铭牌。若干燥后信号暂时恢复,这提供了排查线索,却不能证明设备已恢复原防护能力。需要根据具体配置确认是否返检或更换受损部件;上述假设不能作为继续使用疑似受潮器件的安全许可。

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