Does the vacuum drying oven vacuum or heat first?

Many customers encounter a problem after purchasing a vacuum drying oven. Should the vacuum drying oven be evacuated first or heated first? The following Kenton instrument will introduce the correct operation method of the vacuum drying oven:
vacuum oven

vacuum oven

The experimental product is put into the vacuum oven to evacuate to remove the gas components that can be removed from the material of the workpiece. If the workpiece is heated first, the gas will expand when heated. Due to the tightness of the vacuum oven, the huge pressure generated by the expanding gas may cause the tempered glass of the observation window to burst. This is a potential danger. You can avoid this danger by following the procedure of vacuuming and heating first.

If you operate according to the program of heating up and then vacuuming, when the heated air is pumped out by the vacuum pump, the heat will be carried to the vacuum pump, which will cause the temperature of the vacuum pump to rise too high, which may reduce the efficiency of the vacuum pump.

The heated gas is directed to a vacuum pressure gauge, which will produce a temperature rise. If the temperature rise exceeds the specified operating temperature range of the vacuum pressure gauge, it may cause the display error of the vacuum pressure gauge.

 The correct method of use should be vacuumed first and then heated up. After reaching the rated temperature, if you find that the degree of vacuum has decreased, you should pump it appropriately. This is advantageous for extending the life of the equipment.

KENTON Apparatus Ltd. ：http://en.kentonchina.com/

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