Working principle 
 The explosion-proof electric heater is a consumption of electrical energy is converted into heat for heating of the heated material. Work in low-temperature fluid medium under pressure through a pipe into the input port, along the electric heating inside the container specific for the runner, the use of the path of the fluid thermodynamic principles and away the thermal energy generated in the work of the heating element, so that heating medium temperature, electric heater export process requirements of high temperature media. Internal control system in accordance with the output of the electric heater temperature sensor signal to automatically adjust the output power of electric heater, the temperature uniformity of the output media; when over-temperature of the heating element, independent of the heating element overheating protection device immediately cut off the heating power, to avoid heating materials caused by over-temperature coke, deterioration, carbonation, and in severe cases lead to the heating element burned out, effectively extending the life of the electric heater. 
 Range of applications 
 Explosion-proof electric heater typical applications are: 
 1, the chemical industry, chemical materials to heat up the heating, some powder dry under a certain pressure, Chemical Process and spray drying. 
 Heated, hydrocarbons, including crude oil, heavy oil, fuel oil, heat conduction oil, lubricating oil, paraffin, etc. 
 3, process water, superheated steam, molten salts, nitrogen (empty) gas, water gas type, and so need to heat up the heating fluid heating. 
 4, due to the use of advanced explosion-proof structure, the device can be widely used in chemical, military, petroleum, natural gas, offshore platforms, ships, mining and other needs