PIEZOELEKTRISCHER DRUCKSENSOR

摘要

A piezoelectric pressure sensor includes—an outer housing separated by an annular gap from an inner housing, which inner housing is attached to the outer housing on the pressure side. At least one piezoelectric measuring element is positioned between a diaphragm placed on the pressure side of the inner housing and a base part of the inner housing. The inner housing is provided with a massive cylindrical wall throughout whose wall thickness essentially corresponds to the thickness of the adjacent outer housing. In the annular gap between the outer housing and the inner housing a heat-transfer liquid is contained, or in the space between the base part of the inner housing and an interior shoulder of the pressure sensor a heat-transfer spring or bellows is located.