Gas detector - Gas detector

Japanese: ガス検知管 - ガスケンチカン

One method of measuring gas concentration is to take a certain amount of sample with a gas sampler equipped with a piston, send it into a glass tube filled with alternating gas detectors and adsorbents (silica gel particles), and compare the color change caused by the chemical reaction between the detectors and the gas contained in the sample with a standard color to determine the gas concentration in the sample. This thin glass tube filled with detectors and adsorbents and sealed at both ends is called a gas detector tube, and when in use, both ends are cut and the sample is sent through it.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ガス濃度測定の一方法として，ピストンを備えたガス採取器で一定量のサンプルを採取し，これをガス検知剤と吸着剤(シリカゲル粒)とを交互に充てんしたガラス管に送り込んで，検知剤とサンプルに含まれているガスとの化学反応による色の変化具合を標準色と比較し，サンプル中のガス濃度を知る方法がある。この検知剤と吸着剤を充てんし両端を密閉した細いガラス管をガス検知管といい，使用する際には両端を切ってサンプルを送り込む。

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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