Constant-temperature heating device of gas pressure sensor

The utility model discloses a constant-temperature heating device for a gas pressure sensor. The constant-temperature heating device structurally comprises a base, a temperature sensor and a PTC heating sheet, a mounting through hole is formed in the center of the base, one end of the mounting through hole is connected with the gas pressure sensor, a connector used for being in butt joint with a gas pipe fitting is arranged at the other end of the mounting through hole, a temperature sensor is fixedly packaged on the base, and a fixedly packaged PTC heating piece is arranged on the side wall of the base. The utility model discloses a constant-temperature heating device. The gas pressure sensor is communicated with a gas pipeline of the fuel cell engine system through the base; a PTC heating sheet and a temperature sensor are additionally arranged on a base in an auxiliary manner; the problem that the pipe orifice of the gas pressure sensor is frozen in a low-temperature environment issolved; according to the