A micro-position gap sensor assembly including a structural housing and a flexible diaphragm fixedly attached forming a barrier against fluid ingress. The structural housing includes a shaft orthogonally attached to the flexible diaphragm, a first retainer including one or more standoffs, a second retainer, and a parallel plate gap sensor. The parallel gap plate sensor includes a non-contact sensor plate biased against a portion of the first retainer defining a plane of the non-contact sensor plate and receiving a biasing force in opposition of the first retainer from the second retainer, a target plate comprised of a conductive paramagnetic material. The parallel plate gap sensor is configured such that displacement of one of the target plate or the non-contact sensor plate changes a distance between the target plate and the non-contact sensor plate.