Stainless steel vacuum drying oven is one of our main products,our best-selling vacuum drying oven models are : DZF-6010 vacuum drying oven, DZF-6020 vacuum oven, DZF-6050 vacuum drying oven.
The temperature value of the vacuum drying oven in the two states of vacuum and normal pressure is inconsistent, and the higher the temperature, the greater the temperature deviation in the two states;
Within a certain range from the heating shelf, the temperature uniformity under vacuum is much better than under normal pressure. Through the analysis and discussion of many existing problems, as well as the analysis of the data in the actual measurement test, a relatively reasonable calibration method is now given to provide reference and help for the subsequent use and measurement of vacuum drying ovens and similar equipment.
The temperature measurement of the vacuum drying oven should be carried out under vacuum conditions, which is more in line with actual needs, so the selected temperature sensor should be a wireless temperature sensor.
Because the temperature uniformity of the vacuum drying oven is not good, the temperature sensor should be as close as possible to the heating shelf during measurement and detection. The specific distance can refer to the container and capacity of the actual dried sample. Recommendations from experimental data under normal pressure: the vacuum drying oven cannot be used as an ordinary drying oven.
The vacuum drying oven has a set of strict usage and operation specifications, which requires special attention:First of all, the dried items must be placed at room temperature. For those with strict gas requirements, you can first vacuumize and then pass in inert gas, and repeat the operation many times;Secondly, the vacuum pump cannot work for a long period of time. Therefore, when the vacuum degree reaches the requirement of dry goods, the vacuum valve should be closed first, and then the power supply of the vacuum pump should be turned off.When the vacuum degree is less than the requirement of dry goods, turn on the vacuum valve and the power supply of the vacuum pump to continue vacuuming, which can prolong the service life of the vacuum pump;Thirdly, the workpiece is put into the vacuum box and evacuated in order to extract the gas components that can be extracted from the material of the workpiece.Heat the workpiece first, and the gas will expand when heated. Because the vacuum box is very tight, the huge pressure generated by the expanding gas may burst the tempered glass of the observation window, which is a potential hazard.Heat the workpiece first, and the gas will expand when heated. Because the vacuum box is very tight, the huge pressure generated by the expanding gas may burst the tempered glass of the observation window. This is a potential hazard. Therefore, it must be vacuumed first. Then heat up and heat up.Pay attention to the change of air pressure during the heating process, and deal with it in time. It is best to wait for the sample to cool to near room temperature before taking it out, and put it in a pre-prepared drying vessel for storage.