Pressure gauge sensor dismounting device

The invention discloses a pressure gauge sensor dismounting device and belongs to the technical field of petroleum well testing auxiliary devices. The pressure gauge sensor dismounting device comprises an installation seat used for holding a sensor. The pressure gauge sensor dismounting device is characterized by further comprising a dismounting bolt seat, a dismounting bolt and a hollow ejector rod, wherein a seal gland and a filtering steel sheet are arranged in the installation seat, one end of the hollow ejector rod is located in the installation seat, the other end of the hollow ejector rod is connected with a protective sleeve, the protective sleeve is located in the dismounting bolt seat, the hollow ejector rod is connected with a tightening nut, the dismounting bolt is connected into the dismounting bolt seat, the dismounting bolt is in contact with the protective sleeve, the dismounting bolt comprises a hexagonal section, a threaded section and a circular truncated cone section, a first center guide