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If the temperature rise exceeds the operating temperature range specified by the vacuum gauge, the vacuum gauge may cause an indication error. The correct method of use should first vacuum and then heat up. After the rated temperature has been reached, if it is found that the degree of vacuum has decreased, then add it appropriately. This is advantageous for extending the life of the device. The vacuum is placed in the vacuum box to extract the gas components that can be removed from the workpiece material. If the workpiece is heated first, the gas expands when heated. Due to the excellent sealing of the vacuum box, the enormous pressure generated by the expanding gas may cause the observation window tempered glass to burst. This is a potential danger. This danger can be avoided by following the procedure of first vacuuming and then heating up the heating.
The reason why the electrothermal rotary vacuum dryer first vacuums and then heats up the heating is a complicated measure. However, if the heating is performed by the heating and then vacuuming process, the heated air is pumped out by the vacuum pump, the heat will inevitably It is brought to the vacuum pump, which causes the vacuum pump to rise too high, which may reduce the efficiency of the vacuum pump. The heated gas is directed to a vacuum gauge and the vacuum gauge produces a temperature rise. Because the electrothermal rotary vacuum dryer is difficult to make the radiant heat of each point in the three-dimensional space of the studio uniform and lacks an authoritative evaluation method, it may be that there is no temperature in the standard of the electric vacuum drying oven. The reason for the uniformity parameter.
The electric rotary vacuum dryer does not have the temperature uniformity parameter. The general electrothermal rotary vacuum dryer has temperature uniformity parameters: the natural convection drying oven is the upper limit of the working temperature multiplied by 3%, and the forced convection drying oven Multiply the upper limit of the operating temperature by 2.5%. However, the electric vacuum drying oven does not have a temperature uniformity parameter. Why is this? The possibility of the gas temperature in the vacuum drying chamber to make the temperature of the working chamber uniform is almost gone.