The pressure controller uses a metal 316L diaphragm sensor, which can be used for neutral oil, gas media and water. The setting value of the controller is adjustable, and the adjustment range is -0.1~40MPa. The explosion-proof mark of explosion-proof products is ExedIICT6, which can be used for automatic pressure control in places with explosive gas mixtures of groups IIA, IIB, and IIC such as gas, liquid, or steam that have no corrosive effect on pressure-sensitive components.