Patent ID: 7210331

Claim:
A detecting element, comprising: at least one connecting cable; a sensor element that is exposable to a measuring gas and includes a connecting end section, the connecting end section being contacted by the at least one connecting cable and being exposed to a reference atmosphere; a protective sleeve including at least one first radial opening provided on the connecting end section; a gas-permeable diaphragm that is slid on over the protective sleeve and covers the at least one first radial opening; and a clamping sleeve that overlaps the diaphragm and is provided with at least one second radial opening, wherein: the clamping sleeve is respectively caulked in a first caulking-around zone and a second caulking-around zone around axially above and below the at least one first radial opening and the at least one second radial opening in the protective sleeve and the clamping sleeve in an area of the clamping sleeve covering the diaphragm, the first caulking-around zone and the second caulking-around zone are designed in such a way that the diaphragm is compressed to an increasing degree from inner caulking edges facing each other to outer caulking edges facing away from each other a radial clearance between the clamping sleeve and the protective sleeve decreases in deformation areas in the clamping sleeve produced by the first caulking-round zone and the second caulking-around zone from the inner caulking edges facing each other to the outer caulking edges facing away from each other, the radial clearance decreases continuously, and a discontinuity forming an undercut is present in the continuous decrease in the radial clearance.