Heating by thermal oil is a method that circulates thermal oil heated by a heater and heats the Heating plate.
This features less temperature variation of the Heating plate in comparison with other heating methods. There are ESO which heats thermal oil by a heater installed in the Heating plate, and KEO which has a heater unit outside the Heating plate and circulates the thermal oil heated there.
If the rate of temperature increase is fast or the specification temperature is high, select KEO which can change the heater capacity. It has the advantage that it does not require boiler equipment and it is easy to relocate, however, electrical usage is large.
If you have boiler equipment, consider selecting thermal oil heating by boiler (OS), but if the operating conditions cannot be met, consider selecting ESO or KEO. Additionally, all of ESO, KEO and OS are normally equipped with an oil cooler and can be cooled if there is cooling water.