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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 applications3 min readContent language: ChineseUpdated 23 October 2026

红外测温仪:透过玻璃需要注意什么?

普通玻璃对常用长波红外可能不透明,仪表可能测到玻璃表面。

直接回答

普通玻璃对常用长波红外可能不透明,仪表可能测到玻璃表面。

普通玻璃在许多长波红外波段不透明,可能测到玻璃本身。

判断依据与适用条件

红外读数来自特定波段和视场内的辐射总效果。目标、背景、窗口与表面状态都可能改变结果;验证应保留距离和光斑、波段及目标条件,不能只用一个发射率系数解释所有表面或路径变化。

在红外测温仪中,本题的检查对象是透过玻璃。需要取得的证据是:核对仪表波段和材料透过谱。光路材料可见光透明不意味着在仪表波段透明。窗口还会反射和发射自身辐射,污染前后透过条件也会改变;比色方法依赖两波段响应的相应假设。选择方案前应取得波段与材料数据,再明确哪些影响由实际配置处理,哪些仍需现场验证。

针对本题怎样核查

  • 先核对窗口波段透过率。记录目标辐射、光斑与表面温度,标明其中哪些是本次实际取得的,未提供的诊断或功能不得当作本机已有能力。
  • 把透过玻璃对应的最低、常用和最不利状态列成表,注明持续时间及数据来源。
  • 围绕“核对仪表波段和材料透过谱”建立前后对照,参照应适用于当前对象及条件。比较期间保留透过玻璃的原配置及工艺状态,一次只处理已有证据指向的因素。

假设案例:如何作出判断

考虑“隔着观察窗测炉内目标却得到窗面温度”这一现场疑问。假设隔窗测炉内却读到接近窗温,不应通过任意发射率补偿假定透射已经建立。

先把当前条件与原选型条件对照。

确认结果与交付记录

这道题的结果应回到“透过玻璃”:结论旁写出支持它的核对仪表波段和材料透过谱,并注明实际覆盖的状态、参照依据与仍待确认项目。报告保留透过玻璃的原始记录和配置,不能把输出端的一次模拟签成未实际覆盖环节的通过。

案例为教学假设;限值及作业条件按实际型号和现场规程。参考文献不替代道威斯顿供货规格或认证。

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