| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensor element that does not affect assembling or measurement accuracy during the manufacturing of a gas sensor and has high strength. <P>SOLUTION: In the longitudinal direction of a gas sensor element having a gas inlet formed at a tip in the longitudinal direction for taking in gas to be measured from an outer space, an amount of flexure in a section between the first position within a range of 20/72 to 20/62 of a length of the element apart from an end face of the tip side and an end face of the other end is set to be greater than or equal to 1/1360 and shorter than or equal to 1/670 with respect to the length in the longitudinal direction of the element. The amount of flexure is defined as the value of the sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when the regression line is calculated by the least squares method from a scatter diagram obtained by plotting measured values of X and Y, where X is a position in the longitudinal direction of the sensor element in the section and Y is displacement in a thickness direction of the sensor element surface, and upper and lower side maximum displacement points are data points where, in the section, the respective distances from the regression line are at the longest. <P>COPYRIGHT: (C)2011,JPO&INPIT |
