Patent ID: 6363790
Filing Date: 2002-04-02
Classification: G01L

Abstract:
A pressure sensor for determining the pressure of a process medium, comprising:a metallic housing, which is open to the process medium and which has a continuous hole for accommodating a ceramic pressure-measuring cell, the ceramic pressure-measuring cell including a ceramic base body and a ceramic diaphragm, which is fitted thereon and is exposed to the process medium, and means for supplying an electrical signal which can be picked off, said electrical signal corresponding to flexing caused by the pressure acting on the diaphragm wherein the diaphragm is resiliently mounted in the housing on a first stop; the base body is supported on a non-metallic intermediate body, which is retained by a metallic fixing device in the housing, and the intermediate body can be moved radially with respect to the metallic fixing device; and wherein the intermediate body is composed of a material whose thermal expansion coefficient corresponds to that of the ceramic base body of the pressure-measuring cell.