Surface temperature sensor

Japanese: 表面温度計 - ひょうめんおんどけい(英語表記)surface temperature sensor
Surface temperature sensor
A thermometer for measuring the temperature of the surface layer of an object. They are broadly divided into contact and non-contact types. Examples of the former include small thermocouple thermometers and thermistor thermometers that are pressed against the surface of an object to measure the temperature, but care must be taken not to change the surface temperature itself by pressing the thermometer against it. On the other hand, representative examples of non-contact types are various radiation thermometers, which are virtually unlikely to change the surface temperature when used, but the emissivity of the surface must be known in order to determine the true temperature from the apparent temperature of the surface.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
物体の表面層の温度を測定するための温度計。接触式と非接触式とに大別される。前者の実例として,小型の熱電温度計やサーミスター温度計を物体の表面に押し付けて温度を測る形式のものがあげられるが,温度計を押し付ける操作に伴って表面温度そのものが変わってしまうことのないよう注意する必要がある。一方,非接触式の代表例は各種の放射温度計であって,その使用の際には表面温度そのものが変わるおそれは事実上ないが,表面の見かけの温度から真の温度を求めるためには表面の放射率を知っておく必要がある。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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