Differential pressure sensor and method of using the same

A method of determining a pressure differential, the method comprising:

• providing a pressure sensor comprising:
• a substrate defining a first substrate surface and a second substrate surface;
• a first pressure sensing assembly attached to the first substrate surface and configured to detect a first pressure force associated with a first volume of fluid, wherein at least a portion of the first substrate surface to which the first pressure sensing assembly is attached is fluidly isolated from the first volume of fluid by a first force transmitting member retainer, wherein the first force transmitting member retainer extends from the first substrate surface;
• and
• a second pressure sensing assembly attached to the second substrate surface and configured to detect a second pressure force associated with a second volume of fluid, wherein at least a portion of the second substrate surface to which the second pressure sensing assembly is attached is fluidly isolated from the second volume of fluid by a second force transmitting member retainer, wherein the second force transmitting member retainer extends from the second substrate surface;
• and
• determining a pressure differential based at least in part on the first pressure force and the second pressure force,
• wherein the first substrate surface and the second substrate surface define opposing ends of a thickness of the substrate.