Pressure gauge insensitive to extraneous mechanical loadings

A method for sensing pressure, comprising:

• exposing a first port of an apparatus to an environment at a location, wherein the apparatus comprises:
• a housing having the first port, wherein the environment is external to the housing;
• a chamber disposed in the housing and having a second port, wherein an exterior surface of the chamber is exposed to a volume inside the housing, an inner surface of the chamber defines a volume inside the chamber, the second port is coupled to the first port such that the volume inside the chamber is in fluid communication with the environment;
• and
• a pressure sensor assembly at least partially disposed in the chamber, wherein the pressure sensor assembly comprises a pressure-responsive member exposed to the fluid in the chamber, the pressure-responsive member comprises a bellows or a diaphragm disposed near a first end region of the chamber, the chamber is mechanically coupled to the housing via a portion of the exterior surface of the chamber near a second end region of the chamber, and the first end region and the second end region are on opposing ends of an axis of the chamber such that a pressure response of the pressure sensor assembly is independent of extraneous loading on the housing;
• and
• sensing a pressure of a fluid in the chamber with the pressure sensor assembly.

A system for sensing pressure, comprising:

• a conductor;
• an apparatus comprising:
• a housing having a first port;
• a chamber disposed in the housing and having a second port, wherein an exterior surface of the chamber is exposed to a volume inside the housing, an inner surface of the chamber defines a volume inside the chamber, the second port is coupled to the first port such that the volume inside the chamber is in fluid communication with an environment external to the housing;
• and
• a pressure sensor assembly at least partially disposed in the chamber and configured to sense a pressure of a fluid in the chamber, wherein the pressure sensor assembly comprises a pressure-responsive member exposed to the fluid in the chamber, the pressure-responsive member comprises a bellows or a diaphragm disposed near a first end region of the chamber, the chamber is mechanically coupled to the housing via a portion of the exterior surface of the chamber near a second end region of the chamber, and the first end region and the second end region are on opposing ends of an axis of the chamber such that a pressure response of the pressure sensor assembly is independent of extraneous loading on the housing;
• and
• a processor configured to process signals received from the pressure sensor assembly via the conductor.