Magnetic diaphragm pressure transducer with magnetic field shield

A pressure transducer comprising:

• A. a rigid housing defining an interior void region,
• B. an electrically conductive diaphragm peripherally supported in said interior region to define a first chamber on one side of said diaphragm and a second chamber on the other side of said diaphragm, a central portion of said diaphragm being movable along an axis transverse to a nominal plane in response to differential pressures applied across said diaphragm, said diaphragm establishing a magnetic field shield such that magnetic flux adjacent to one side of said diaphragm is substantially constrained to be on that side,
• C. a first magnetic assembly disposed on the periphery of a primary one of said chambers and opposite said central portion of said diaphragm, said first magnetic assembly including:
• i. a dielectric member having a first side facing said primary chamber and being opposite said diaphragm and a second side opposite to said first side,
• ii. an inductor including a first electrical conductor extending between a first end of said first conductor, and a second end of said first conductor, and adjacent to said second side of said dielectric member, said inductor being characterized by an associated inductance value, said inductance value being a function of a distance between said diaphragm and said inductor, said inductance value decreasing in response to decreases in said distance and increasing in response to increases in said distance, and
• D. a first port including means for fluidically coupling one of said first and second chambers to a first region external to said transducer.