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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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Selection and applications4 min readContent language: ChineseUpdated 23 October 2026

振动传感器与变送器:为什么需要保留原始时域波形?

总体值和频谱是处理结果,无法完整保留冲击形态、削顶和事件先后。

先回答这个具体问题

总体值和频谱是处理结果,无法完整保留冲击形态、削顶和事件先后。原始波形及采样配置能支持复核与重新分析,只有图片或总值时,许多判断无法追溯。

更换传感器后应保存旧灵敏度、安装方式和趋势基线;不能在改变方向、位置或频带后继续用旧曲线直接评价设备改善程度。异常数据应标注而非覆盖。

现场怎样核对

将波形、采样率、时间戳、单位和处理配置一起归档,检查导出后能否重读。

同时记录测点、原始信号、最终结果和发生时间。保留原始配置,一次只改变一个可控条件;只有单位、工况和处理规则一致时,两组数字才可直接比较。

四项核对清单

  • 将波形、采样率、时间戳、单位和处理配置一起归档,检查导出后能否重读。
  • 记录本题试验所用的输入条件、参考方法及设备状态,保留试验前的原始配置。
  • 对照实际订购型号核实接口和功能选项;公开原理与其他品牌示例不是本型号的性能保证。
  • 将结果分成已证实、尚未排除与需要厂家确认三类,未经验证不直接改标定系数。

假设案例:怎样得出判断

假设案例:报告中发现异常谱峰时,若保留原波形,就能继续核查是否存在削顶或孤立冲击。 这个情景只用于说明本题的分析过程,并非真实客户案例。先按上述方法检查,再比较相同测点、相同工况下的结果;如果改变了安装、采样或配置,应保存变更前后的证据。仅观察到数值接近,不能证明根因已经解决,更不能据此推断整台设备长期运行合格。

客户与销售应怎样确认需求

客户向道威斯顿咨询本题时,可一并提供电机、泵和轴承座的振动测量链路的测点示意、工作条件和本题核对记录。销售应把问题转成具体的输入要求、安装条件、功能选项与验收证据,逐项交由技术人员确认。涉及设备保护、联锁或危险区域的试验,由现场负责人员批准;知识文章不替代设备制造商的停机条件或操作规程。

Apply this knowledge to product selection

Customers and procurement

Check actual application and acceptance requirements against the article and product documentation. Bring open questions to DOWESTON for technical review.

Sales and technical teams

Record customer questions with application conditions. Verify range, interfaces and operating requirements against the selected model documentation.

Turn questions into application requirements

Collect application, connection, installation and acceptance requirements for the selected product, then review open points with DOWESTON.

Choose a product and prepare requirements
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