Vacuum drying oven is specially designed for drying heat sensitive, easy to decompose and easy to oxidize substances. It can be filled with inert gas inside the vacuum oven, especially some articles with complex composition can also be distributed for rapid drying.

Vacuum degree refers to the degree of gas thinning in the vacuum state,which is usually marked by “high vacuum degree” and “low vacuum degree “, If the pressure in the measured equipment is lower than the atmospheric pressure, the pressure measurement requires a vacuum gauge. The values read from the vacuum gauge are called vacuum. The vacuum value is the value indicating that the actual pressure of the system is lower than the atmospheric pressure, that is, the vacuum degree = the atmospheric pressure – the absolute pressure, the absolute pressure = the atmospheric pressure gauge pressure (- the vacuum degree).

The international vacuum industry uses “vacuum”, is also the most scientific use of absolute pressure identification, refers to the “limit vacuum, absolute vacuum, absolute pressure “, but due to easy measurement,easy to purchase the measuring instruemnts,the ” relative vacuum ” is also widely used.

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