Conversion of relative vacuum and absolute vacuum

- Sep 21, 2019-

International vacuum industry general "vacuum degree", but also the most scientific is to use absolute pressure mark; Referring to is the "ultimate vacuum, vacuum absolutely (absolute vacuum is actually a kind of ideal state of vacuum, in fact, there is no such thing as absolute vacuum), the absolute pressure", but "relative" vacuum pressure, negative pressure (relative pressure, vacuum table) as a result of the measurement method is simple, measurement instrument is very common, easy to buy and cheap, so there are a wide range of applications. Theoretically they can be converted into each other,