Media-isolated relative gauge pressure sensor

A system comprising:

• an automotive exhaust assembly;
• and,
• a media-isolated relative gauge pressure sensor for measuring exhaust pressure with respect to atmospheric pressure, wherein the media-isolated relative gauge pressure sensor comprises:
• a base port;
• an assembly welded to the base port;
• and
• a tubular connector coupled to the assembly, wherein:
• the tubular connector comprises a cavity for allowing air at a reference pressure to enter internal portions of the tubular connector and the assembly such that the cavity is configured to facilitate flow of the air at the reference pressure to a back side of a sensing element, wherein the back side of the sensing element is opposite to a sensing side of the sensing element that is configured to receive pressure, via an incompressible fluid, from a medium being measured;
• the tubular connector is coupled to a metal tube inserted in at least a portion of the cavity and disposed substantially parallel to the tubular connector;
• and,
• the tubular connector comprises an O-ring surrounding an outer circumference of the metal tube.

A method comprising:

• receiving, via an incompressible fluid and a diaphragm, a pressure of a medium being measured by a sensing side of a sensing element;
• receiving, via a cavity of a tubular connector, a reference pressure by a back side of the sensing element, wherein the back side of the sensing element is opposite to the sensing side of the sensing element;
• and,
• calculating, based on the pressure of the medium and the reference pressure, a net pressure.