-
Gas Pressure and Vacuum Level: Understanding the Connection
The concepts of gas pressure and vacuum level are closely linked, and understanding their relationship is key to mastering vacuum technology.What Is Gas Pressure?Gas pressure is the result of countless molecules colliding with the walls of a container. At atmospheric pressure, this amounts to about 1013 mbar.What Is Vacuum Level?A vacuum level describes how much pressure inside a system has been reduced compared to atmospheric conditions. A better vacuum means fewer gas molecules remain.The RelationshipHigher pressure = lower vacuum qualityLower pressure = higher vacuum qualityIn other words, vacuum is essentially the reduction of gas pressure.ApplicationsInsemiconductor manufacturing, ultra-high vacuum ensures that particles don’t interfere with chip production. Inaerospace engineering, vacuum chambers replicate outer space.ConclusionThe link betweengas pressure and vacuum levelis simple yet powerful: reducing pressure increases vacuum quality. This principle drives nearly every indus
View -
Meaning and Characteristics of Vacuum
In the realm of vacuum science, vacuum refers to a gas state within a given space that is below one atmospheric pressure. This rarefied gas state is commonly referred to as a vacuum condition. Compared to the atmospheric conditions essential for human survival, this specific vacuum state has several fundamental characteristics:Pressure Differential: In a vacuum state, the gas pressure is lower than one atmospheric pressure. Consequently, all vacuum containers on the Earth's surface are subjected to atmospheric pressure, with the magnitude of this force determined by the pressure difference between the interior and exterior of the container. Given that one atmospheric pressure on the Earth's surface is approximately 10135 N/m², if the internal pressure of a container is very low, it will experience an external pressure close to one atmospheric pressure. The force per unit area at different pressures is illustrated in Table 1.Gas Molecular Density: Due to the thinness of gases in a vacuu
View
Vacuum
