While conductive adhesives 60 are provided between element electrodes of a pyroelectric element 10 and board electrodes of an installation board 20, the conductive adhesives 60 are hardened to connect between the element electrodes of the pyroelectric element 10 and the board electrodes of the installation board 20. The conductive adhesives 60 include epoxy resin and, after hardened, have 4B to 7H, both inclusive, of pencil hardness as their hardness on JIS K 5600-5-4 (ISO 15184) standard basis. If the pyroelectric element 10 is broken down, the hardened conductive adhesives 60 are impacted or are cut by using a cutter to take off the pyroelectric element 10 from the installation board 20.
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机译：尽管在热电元件10的元件电极和安装板20的板电极之间提供了导电粘合剂60，但是导电粘合剂60被硬化以连接在热电元件10的元件电极与安装板20的板电极之间。导电粘合剂60包括环氧树脂，并且在硬化之后具有4B至7H（包括两个端点）的铅笔硬度（基于JIS K 5600-5-4（ISO 15184）标准的硬度）。如果热电元件10破裂，则硬化的导电粘合剂60受到冲击或通过使用切割器切割，以从安装板20上取下热电元件10。
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