Hydraulic pressure measurement device and pressure transducer, or a differential pressure sensor with a hydraulic diaphragm seal

摘要

A diaphragm seal 1 comprises a pressure means of mediating body 6, 9 with a pressure chamber 4; a separation membrane 2, which closes the pressure chamber in a pressure-tight manner, wherein the separating membrane of the side facing away from the pressure chamber with a medium pressure is acted upon by the separating membrane is transmitted in the pressure chamber; and a hydraulic path 5, 8, which is derived from the pressure chamber and can be connected with a pressure-measuring cell 3, in order to the pressure measuring cell with the pressure prevailing in the pressure chamber to act upon; wherein the diaphragm seal, furthermore, a hydraulic damping element 11, 12, with which the effective hydraulic cross section of the hydraulic path in at least a portion of the hydraulic path as a function of a temperature of the diaphragm seal can be changed.