Small size, high power: the heater mainly uses the cluster type tubular electric heating element. The heat echo is fast, the temperature control precision is high, and the comprehensive heat efficiency is high. High heating temperature: the design temperature of the heater can reach 850 centigrade. Medium outlet temperature is average, temperature control precision is high. The utility model has the advantages of wide applicability and strong adaptability. The heater can be used in explosion proof or popular places, and the explosion-proof grade can reach D, II, B and C, and the pressure can be up to 20MPa. Long life, high reliability: the heater is made of extraordinary electric heating data, designed low power load, and the use of multiple maintenance, so that the electric heater safety and life increased greatly. Can be fully active control: according to the requirements through the heater circuit design, you can easily complete the export temperature, flow, pressure and other parameters of active control, and can be connected with the computer network. The energy saving result is obvious. The heat produced by the electric energy is simply transmitted to the heating medium.