Patent ID: 7441461

Claim:
A pressure pickup for registering the pressure of a medium, comprising: a diaphragm seal module having a diaphragm seal platform and a separating diaphragm, which is secured to said diaphragm seal platform to form a pressure chamber between said diaphragm seal platform and said separating diaphragm; a temperature sensor for registering a temperature of said diaphragm seal module; a sensor module having a pressure measuring cell; a pressure line, which extends between said pressure chamber and said measuring cell, in order to load said measuring cell by means of a transmission liquid with the pressure existing in the pressure chamber; a housing, which is spaced from said diaphragm seal module and has a housing chamber, in which an electronic circuit is arranged, which has a first input for signals of said pressure measuring cell and a second input for signals of said temperature sensor; a spacing tube, which connects said housing rigidly with said diaphragm seal module and thus mechanically unloads both said conduit and said pressure line, said spacing tube, preferably has a diameter such that it surrounds said conduit and said pressure line; and a canal, which comprises a conduit arranged between said housing chamber and said diaphragm seal module, wherein: at least one electric line runs through said canal for the coupling of said temperature sensor with said electric circuit; said canal comprises a conduit, which is arranged between said housing and said diaphragm seal module, and with said housing chamber forms an enclosed volume which is explosion-protected relative to the environment; said sensor module includes a platform, which carries said pressure measuring cell, and said housing has in a first housing wall an opening, through which said conduit communicates with said housing chamber; said platform of said sensor module forms the first housing wall; and the connection between said conduit and said housing includes a gap satisfying the requirements for a flame penetration barrier.