公开(公告)号：US4474183A

公开(公告)日：1984-10-02

申请号：US567559

申请日：1984-01-03

申请人： Makotao Yano ,  Michihiro Nakamura

发明人： Makotao Yano ,  Michihiro Nakamura

IPC分类号： G01N27/414 ,  G01N27/30 ,  G01N27/40

CPC分类号： G01N27/4141 ,  Y10S977/796

摘要： A gas sensor with its photosensitivity allayed in which a hydrogen ion sensitive FET transducer having the structure of a gate-insulated field effect transistor and an Ag-AgCl reference electrode are housed inside a flexible tube in such a way that the gate part of said FET transducer and the reference electrode are located at the front end opening of the tube or an opening provided in the side wall of the tube; while the lead wires connected to the FET transducer and the reference electrode are extended along the tube, this tube is closed by filling an electrical insulation resin at least in the space of the part inside the tube wall housing the parts connecting the lead wires to the aforementioned FET transducer and to the reference electrode; further, a hydrophilic polymer containing an electrolyte is put around at least the gate part of said FET and part of the reference electrode, to envelop both of them; and whole of the surface of the aforementioned hydrophilic polymer and that of at least the part of the insulator tube housing the FET transducer are coated with a gas permeable membrane formed of a colored silicone rubber with a low optical transmittance.

摘要翻译： 一种具有光敏性的气体传感器，其中具有栅极绝缘场效应晶体管和Ag-AgCl参考电极的结构的氢离子敏感FET换能器容纳在柔性管内，使得所述FET的栅极部分 换能器和参考电极位于管的前端开口处或设置在管的侧壁中的开口; 当连接到FET换能器和参考电极的引线沿着管延伸时，该管通过至少在管壁内的部分空间中填充电绝缘树脂来封闭，该管壁将容纳连接引线的部分 上述FET换能器和参考电极; 此外，含有电解质的亲水性聚合物至少围绕所述FET的栅极部分和参考电极的一部分，以包围它们; 并且上述亲水性聚合物的整个表面以及容纳FET换能器的绝缘体管的至少一部分的表面涂覆有由具有低透光率的有色硅橡胶形成的透气膜。