Pressure sensor apparatus with separation membrane held between sensor and measuring cell housing bodies

A pressure sensor unit comprising:

• a main body housing defining a supply opening for transmitting a pressure medium into an interior of the main body housing, the main body housing having connection contacts leading from the housing interior toward an exterior of the main body housing;
• a pressure measuring cell disposed in the main body housing, the pressure measuring cell including a measuring cell housing defining a recess having an admission opening adjacent said supply opening;
• a pressure sensor disposed in said recess;
• a pressure transmission medium disposed in said recess and adapted to act upon the pressure sensor, the pressure transmission medium filling said recess up to said admission opening;
• and,
• a separation membrane disposed in the main body housing to seal between the admission opening and the supply opening for separating the pressure medium from the pressure transmission medium, the separation membrane being arranged between an exterior surface of the measuring cell housing and an interior cooperating surface of the main body housing of the pressure sensor unit, whereby a sealing closure of the admission opening of the pressure measuring cell is established by means of a relative clamping force between the respective cooperating exterior surface of the measuring cell housing and the interior surface of the main body housing when the measuring cell housing and the main body housing are brought into a respective connected position.