Patent ID: 7150197

Claim:
A pressure sensor, comprising: a pressure measuring cell having an essentially cylindrical platform of a first diameter and a first thickness, and a measuring membrane of a second diameter and a second thickness, joined to an end face of the platform; an elastic sealing ring of a third diameter and a third thickness, bearing against the membrane-containing end face of the pressure measuring cell; and a support ring of a fourth, outer diameter, a fourth inner diameter and a fourth thickness, wherein: said support ring supports the membrane-far, rear face of said pressure measuring cell; said measuring cell is axially clamped between said elastic sealing ring and said support ring; and the dimensions of said support ring are matched to the dimensions of said sealing ring and said pressure measuring cell in such a way that a radial deformation of the membrane-containing face caused by the axial clamping of said pressure measuring cell is so small, that the span error of the pressure sensor due to a reduction of the axial clamping force by at least 10% amounts to not more than 0.02%.