| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a gas sensor which can fit a gas introduction part of a protector mounted on a gas sensor to a flow channel so as to have a specific physical relationship easily by only screwing the gas sensor to the flow channel.SOLUTION: In a method of manufacturing a gas sensor 1 which includes a detection element, a cylindrical main body metal fitting 50 surrounding the radial periphery of the detection element and having a male screw part 51 on a side surface thereof, and a cylindrical protector 100 storing the detection part of the detection element and fixed to the main body metal fitting, and is arranged in a flow channel 200 where measured gas flows, the protector includes a gas introduction part 140 which can introduce the measured gas from the outside in a predetermined range only in the peripheral direction of the side wall, when the male screw part is screwed to a female screw part 201 which is provided in a circulation pipe forming the flow channel and whose cutting start position 201s is adjusted in advance, thread-cutting with a cutting end position 51e of the male screw part adjusted is performed so that the gas introduction part has a specific physical relationship with the flow channel. |
