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Tips for using vacuum oven

1. If the vacuum oven is operated according to the procedure of first heating and then vacuuming, when the heated air is pumped out by the vacuum pump, the heat will inevitably be carried to the vacuum pump, which will cause the vacuum pump temperature to rise too high, which may reduce the efficiency of the vacuum pump.

2. The correct method of use should first vacuum and then heat up. After reaching the rated temperature, if it is found that the vacuum degree has dropped, it should be properly pumped down. This is beneficial to extend the service life of the equipment.

3. The electric heating vacuum drying oven adopts the method of heating the wall of the vacuum chamber first, and then radiating heating from the wall to the workpiece. In this way, the temperature sensor of the temperature control instrument can be arranged on the outer wall of the vacuum chamber. The sensor can simultaneously receive convection, conduction, and radiant heat. The glass rod thermometer in the vacuum chamber can only receive radiant heat, and because the blackness of the glass rod cannot reach 1, a considerable part of the radiant heat is refracted, so the temperature value reflected by the glass rod thermometer must be lower than the temperature reading of the meter .

4. It is normal that the difference between the temperature reading of the instrument and the reading of the glass rod thermometer under 200℃ working condition is within 30℃. If the temperature sensor of the temperature control instrument is arranged in the vacuum chamber, the difference between the temperature value of the glass rod thermometer and the temperature reading of the instrument can be appropriately reduced, but it is impossible to eliminate, and the sealing reliability of the vacuum chamber adds a possible unreliable link . If you do not want to see this difference from a practical perspective, you can use the display correction function of the temperature control instrument to solve it.

5. In essence, the vacuum oven serves people more convenient and better life, but if there is a problem due to improper operation, it will also have a negative impact on our work and life. Therefore, in the usual basic operation , We should follow the rules of the vacuum oven, use it carefully, and try to let it serve our lives for a longer time.

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