基本信息
摘要：PURPOSE:To detect the steal of corrosive or combustible gases into a panel thereby to prevent a device in the panel from being deteriorated and explosion from taking place by using the principle, in which an electromotive force is generated by the diference in the pH of a solution between the both sides of a glass thin film. CONSTITUTION:A sealed glass thin film container 22 having an internal electrode is charged with such a chemical as is reacted with corrosive gases such as H2S to have its pH varied and as has no combustible and corrosive properties, e.g., a solution of NaOH. An open container 23 having an internal electrode is also charged with the same chemical as that in the container 22. If H2S steals into panel 21 of sealed construction, the chemical in the container 23 reacts with the H2S so that its component is changed as well as the pH value. On the contrary, the pH value of the chemical in the container 22 is invaried. As a result, a potential difference is established between the two chemicals so that a voltmeter 24 connected with the containers 22 and 23 through a wire 25 indicates a preset voltage level.
摘要附图：
