Physical quantity measuring sensor and sensor module

摘要

A physical quantity measuring sensor includes: a joint (1) having a projection (15); a ceramic sensor module (2) including a diaphragm (21) and a cylindrical portion (22) integrated with the diaphragm (21) and provided to the projection (15); and an O-ring (7) interposed between a sensor-module flat portion (22A) extending in a direction orthogonal to an axial direction of the cylindrical portion (22) and a joint flat portion (15A) extending in a direction orthogonal to an axial direction of the projection (15).