Description of vacuum pump parameters

A list of vacuum pump technical parameters may include: pumping speed, limit vacuum, pumping volume, speed, limit pressure, etc.

The specific meanings of these parameters are as follows:

Vacuum degree: The degree of thin gas in a vacuum state, usually expressed by "high vacuum" and "low vacuum". The units are Torr or Pa.

Pumping rate: The unit is m³/h or L/s, which refers to the gas extracted from the intake port of the vacuum pump within a unit time under a certain pressure and temperature.

The unit is m³/s or L/s, which refers to the gas flow at the pump inlet.

Speed: The unit is r/min, the rotation speed of the rotor.

Ultimate vacuum: After the vacuum pump is fully pumped, it is stabilized at a certain vacuum degree, which is the ultimate vacuum of the pump. Usually, the vacuum pump needs to undergo 12 hours of refining, and then vacuum for 12 hours, and the last hour is measured every 10 minutes, and the average of the 6 times is the limit vacuum value.

Pressure or pressure: The force exerted by a gas molecule on a unit area of a container wall, expressed in Pa.

Maximum working pressure: Only the inlet pressure corresponding to the maximum extraction volume. At this pressure, the pump can work continuously without deterioration or damage.