Several factors must be addressed while choosing a vacuum pump. To begin with, your choice should be personalized to your intended purpose, enabling you to choose the technology, lubrication, chemical resistance, vacuum level, and required flow rate.
When choosing a vacuum pump, the quality and goal vacuum level should be considered the most significant elements. The three types of vacuum are a rough or low vacuum, a high vacuum, and an ultrahigh vacuum. The scarcity of the number of molecules obtained, which is defined by residual gas pressure, is the difference between the three. As the pressure falls, the number of molecules per cm3 decreases. As a result, vacuum quality increases.
Additionally, you need to consider the following traits:
The pump's flow rate: The flow rate of the pump is proportional to the machine's draining time. As a result, the vacuum pump's capacity to provide both the needed pumping speed (volume flow rate) and the mass flow rate according to the process requirements must be assessed. In general, the faster the flow rate, the less time it takes to drain. According to the kind of vacuum selected, the number of surviving molecules per cm3 is shown in the table above.
Chemical compatibility: By examining all conceivable difficulties that the device may meet, you must examine the compatibility of the gasses utilized in your application with the selected vacuum pump.
Lubrication: It's critical to consider whether or not lubricating the vacuum pump is necessary. A vacuum pump that is oiled has higher efficiency and resistance. It does, however, need frequent maintenance. A dry vacuum pump is preferred in a laboratory setting.
Maintenance and cost: The frequency of maintenance cycles will then need to be examined based on the parameters given above. This will establish the total cost of your installation, which will include not only the purchase price but also the expenditures for operation and maintenance.
