Isolation self-protection interface for pressure sensor

The invention belongs to the sensor design technology, and relates to an isolation self-protection interface for a pressure sensor. The isolation self-protection interface comprises a pressure interface (1) and an isolation device (2). The pressure interface and the isolation device are fixedly connected into a whole. The center of the pressure interface (1) is provided with a pressure leading hole (3). The center of the bottom of the pressure interface (1) is provided with a circular concave plane, and the diameter of the circular concave plane is larger than that of the pressure leading hole. The isolation device (2) comprises a primary isolating plate (4) and a secondary isolating plate (5). The primary isolating plate (4) is in the form of a circular flat plate, and the center of the primary isolating plate is provided with a plane of a circular recess. The diameter of the circular recess is larger than that of the pressure leading hole. The center of the circular recess coincideswith the center of the pr