Pressure sensor, system for mounting and demounting of the pressure sensor and use of the pressure sensor

A pressure sensor for measuring the pressure of a fluid medium confined by a wall that defines a mounting bore configured for mounting the pressure sensor in a manner that disposes the pressure sensor for measuring the pressure in the fluid medium, the pressure sensor comprising:

• a mounting device configured to be mounted in the mounting bore;
• a sensor device held by the mounting device and including a diaphragm and a sensor element, wherein the sensor device defines a socket that is partially defined by a sensor device surface;
• wherein the diaphragm is configured and disposed to be in direct contact with the fluid medium when the mounting device is mounted in the mounting bore;
• wherein the sensor element is configured so that when the mounting device is mounted in the mounting bore, the sensor element generates a measurement signal commensurate with a pressure-dependent deformation of the diaphragm;
• a sealing element that includes a trunnion that is deformable to define a deformed first sealing element surface touching the sensor device surface in a form fitting first sealing that prevents the fluid medium from escaping from the mounting bore;
• wherein the sealing element defines a deformable second sealing element surface that is deformed to touch the wall surface of the wall when the mounting device is mounted in the mounting bore and to form a second sealing that seals the mounting bore against escape of the fluid medium from the mounting bore;
• wherein the pressure sensor is configured to elongate in an axial direction along a longitudinal axis and the trunnion is configured to be inserted into the socket in the axial direction;
• wherein the mounting bore is partially defined by a wall surface, wherein the socket comprises a socket base;
• wherein the trunnion comprises a trunnion head that is deformable;
• wherein a trunnion head offset exists between an undeformed trunnion head and the socket base;
• and
• wherein the trunnion head offset is configured to be resolved by deformation of the nondeformed trunnion head into the deformed trunnion head that abuts against the socket base in a planar manner and forms the permanent form fit with the socket base.

A system for mounting and demounting a pressure sensor, the system comprising:

• a container having a wall that is configured to enclose an interior of the container in a pressure-tight and gas-tight manner;
• a fluid medium located in the interior of the container under a pressure;
• wherein the wall comprises a mounting bore;
• wherein the pressure sensor is configured to be mounted in the mounting bore of the wall and demountable from the mounting bore;
• and the pressure sensor comprising:
• a mounting device configured to be mounted in the mounting bore;
• a sensor device held by the mounting device and including a diaphragm and a sensor element, wherein the sensor device defines a socket that is partially defined by a sensor device surface;
• wherein the diaphragm is configured and disposed to be in direct contact with the fluid medium when the mounting device is mounted in the mounting bore;
• wherein the sensor element is configured so that when the mounting device is mounted in the mounting bore, the sensor element generates a measurement signal commensurate with a pressure-dependent deformation of the diaphragm;
• a sealing element that includes a trunnion that is deformable to define a plastically deformed first sealing element surface that plastically deforms to conform to the sensor device surface in an irreversible form fitting first sealing that prevents the fluid medium from escaping from the mounting bore;
• and
• wherein the sealing element defines a deformable second sealing element surface that is deformed to touch the wall surface of the wall when the mounting device is mounted in the mounting bore and to form a second sealing that seals the mounting bore against escape of the fluid medium from the mounting bore.