Vacuum Drying Ovens are widely used in daily life, but due to the negligence of relevant personnel and ignorance of them, a series of problems have appeared during use. The following is an analysis of the frequent problems of vacuum Drying Ovens.
1. If the vacuum drying box is operated according to the procedure of first heating up and then vacuuming, when the heated air is pumped out by the Vacuum Pump, the heat will inevitably be brought to the Vacuum Pump, which will cause the temperature rise of the Vacuum Pump to be too high, which may reduce the efficiency of the Vacuum Pump. decline.
2. The correct method of use should be to vacuumize first and then heat up. After reaching the rated temperature, if you find that the vacuum degree has dropped, then pump it properly. Doing so is beneficial for prolonging the service life of the equipment.
3. The general electric heating vacuum Drying Oven adopts the method of heating the wall of the vacuum chamber first, and then radiating the workpiece from the wall. 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 accept convective, conductive, and radiant heat simultaneously. The glass rod thermometer in the vacuum chamber can only accept 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 instrument .
4. Generally speaking, it is normal that the difference between the temperature reading of the instrument and the reading of the glass rod thermometer at 200 °C is within 30 °C. If the temperature sensor of the temperature control instrument is arranged in a 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 cannot be eliminated, and the sealing reliability of the vacuum chamber increases a possible unreliable link . If you do not want to see this difference from the practical point of view of operation, you can use the unique display correction function of the temperature control instrument to solve it.
5. In essence, the vacuum Drying Oven serves for people's 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.
Warm reminder: In the usual basic operation process, we should strictly follow the rules of using the vacuum oven, use it carefully and safely, and try to make it serve our life for a longer period of time.
