Patent ID: 8042400

Claim:
A pressure sensor, comprising: a substrate; a differential pressure diaphragm, which is provided to a center part of the substrate; a first differential pressure gauge, which is provided to a perimeter edge part of the differential pressure diaphragm and is formed in radial directions with respect to the center of the differential pressure diaphragm; a second differential pressure gauge, which is disposed at a position at which it opposes the first differential pressure gauge and, together with the first differential pressure gauge, sandwiches the differential pressure diaphragm and is formed in a perimeter edge part of the differential pressure diaphragm in perimeter directions, which are perpendicular to the radial directions; a third differential pressure gauge, which is provided to the perimeter edge part of the differential pressure diaphragm in the vicinity of the first differential pressure gauge and is provided in the perimeter directions; a fourth differential pressure gauge, which is disposed at a position at which it opposes the third differential pressure gauge and, together with the third differential pressure gauge, sandwiches the differential pressure diaphragm and is formed in the radial directions in the perimeter edge part of the differential pressure diaphragm; a first static pressure diaphragm, which is provided on an outer side of the differential pressure diaphragm and is disposed at a position that lies in the perimeter directions between the third differential pressure gauge and the fourth differential pressure gauge; and a second static pressure diaphragm, which is provided on an outer side of the differential pressure diaphragm and is disposed at a position at which it opposes the first static pressure diaphragm and, together with the first static pressure diaphragm, sandwiches the differential pressure diaphragm.