Feature: (1).There is no need to replace bath oil during the whole process of heating and refrigerating. (2).Temperature can be lowered and raised quickly. (3).Temperature can be lowered and raised successively. (4).The liquid circulation system is a full-hermetic system,so the heat-conducting liquid does not vaporize and oxidize easily when the temperature is high and does not absord water in the air easily when the temperature is low.therefore,the service life of the heat-conducting liquid is extented. (5).Be capable of high-temperature cooling and refrigerating.High temperature can be lowered directly(For instant,temperature can be reduced directly from 200). (6).Refrigeration heat-converter adopt full-brazing board-type converter,which is small in size and high in heat-conversion efficiency. (7)Be capable of display of liquid. (8).Operating safety is guaranteed by delay,power leakage,over-current and over-heating protections. (9)Temperature probe adopts Pt100 sensor. (10)The safety protection grade is IP51. Technical Data: Model:ZT-2-200-20 Temperature range:-20 200 Heating Power:2.0Kw Pump rate of (L/m):12 Dimension(L*W*H):500*365*825(mm)