公开(公告)号：US4105524A

公开(公告)日：1978-08-08

申请号：US742698

申请日：1976-11-17

申请人： Takeshi Fujishiro ,  Kiyoshi Wazawa ,  Takeshi Oguro

发明人： Takeshi Fujishiro ,  Kiyoshi Wazawa ,  Takeshi Oguro

IPC分类号： G01N27/407 ,  G01N27/416 ,  G01N27/46

CPC分类号： G01N27/4073

摘要： A sensor mainly intended for use in an engine exhaust system and constituted of a hollow and bottomless cylinder of a solid oxygen-ion electrolyte such as a ZrO.sub.2 -CaO system. A pair of porous and conductive films are respectively deposited on the outer and inner surfaces of the cylinder and a pair of conductor members are fixed to the cylinder. One of the conductor members covers hermetically one end of the cylinder while the other is fixed to the opposite end region of the cylinder and bored such that the interior space of the cylinder communicates with an exterior atmosphere exclusively through the bore and such that the cylinder can be entirely held in a heated gas subject to the measurement when the sensor is attached to a vessel containing the heated gas therein. The cylinder of solid electrolyte may be made up of either a single piece or a plurality of identical pieces hermetically joined to one another in an axial direction, wherein the conductive films of each piece are connected in series with ones of the adjoining piece.