圧力スイッチは,マイコンガスメーター(ガス遮断装置付きガスメーター)の保安部品の1つである.本研究では,圧力スイッチの有する特徴として,①設置後10年以内に全数回収される,②回収ルートが確立している,③同一規格の単体製品である,などに着目し,圧力スイッチのリユース手法の開発に取り組んだ.具体的には,促進劣化試験条件および統計的手法による合格率の算出方法を検討することで,圧力スイッチのリユースが可能かどうかの判断基準を明確にすることを試みた.
In this study, we investigated the effects of H2 gas addition on electrical and optical properties of a RF capacitive atmospheric pressure non-equilibrium Ar plasma jet. It was found that the discharge behavior of the plasma jet was scarcely changed with the addition of H2 gas. However, the discharge current decreased when trace of H2 gas was added into the Ar plasma jet. In respect of optical emission spectrum (OES), the emission intensities of excited Ar atoms increased significantly after the addition of trace of H2 gas. On the contrary, an expected quenching effect of H2 gas was not observed. Based on the electrical and optical characterizations, chemical reactions in Ar-H2 plasma jet were proposed.