Electric heaters include fuel oil, lubricant oil, jacket water, sea water, etc., and use corrosion-resistant materials depending on the type of fluid. The electric heaters include a shell body type and a tank mounting type. The tank mounting type incudes a side type applied to the side of a tank and top mounting type applied to the top part of a tank.  

In the operation of an electric heater, the fluid temperature is heated using electricity, and the fluid is discharged. To control this, the MC type and TPR type are used. 

The MC type is an on-off step control type, and it can only be controlled using the necessary capacity by dividing the capacity. The TPR type as an electric current control type that can automatically control the temperature using a 4~20mA current.