Explosion-proof electric thermal oil boilers is designed for process temperature control up to 350℃, which is custom designed for each application, using synthetic heat transfer fluids. TOH series thermal oil boilers is the most compact temperature control system. The system include an electric heater, centrifugal pump, expansion tank, control panel, strainer, stop valves, platinum resistance thermometer sensor, pressure gauge with electric contact, alumina silicate fibre insulation and connecting piping mounted in a welded steel frame.

Normally a pump transports the thermal oil into the heater, which is then heated. The thermal oil will then flow out of the heater at a fixed flow rate decided. The heat generated is evenly distributed and the efficiency of the heater is high. Temperature sensors can be used with control to achieve the desired temperature range.

The heater could come with a shell and tube cooling exchanger and a three way diverting valve for processes that require heating and cooling.