As a subject matter expert in vacuum technology, I can provide you with a comprehensive answer to your question regarding the micron levels a vacuum pump should achieve.

Vacuum pumps are essential in a variety of industries, including scientific research, industrial processes, and medical applications. The effectiveness of a vacuum pump is often measured by its ability to reduce the pressure in a system to a certain level, which is typically expressed in microns of mercury (µm Hg), a unit of pressure.

The ideal micron level that a vacuum pump should pull down to depends on the specific requirements of the application it is being used for. Different applications have different vacuum levels they require to function properly. For instance:


1. Low Vacuum Applications: These applications typically require a vacuum level between 760 torr (atmospheric pressure) and 10^-3 torr. A micron level in this range would be from 0 to 760 µm Hg.


2. Medium Vacuum Applications: These require a vacuum level between 10^-3 torr and 10^-7 torr. The corresponding micron levels would be from 760 µm Hg down to 0.76 µm Hg.


3. High Vacuum Applications: For these applications, the vacuum level needs to be between 10^-7 torr and 10^-9 torr, which translates to a micron level from 0.76 µm Hg down to 0.076 µm Hg.


4. Ultra-High Vacuum Applications: These are the most demanding and require a vacuum level below 10^-9 torr, which is less than 0.076 µm Hg.

It's important to note that achieving and maintaining a specific micron level is not just about the pump's capability but also involves other factors such as the system's design, the presence of leaks, and the efficiency of the vacuum chamber's evacuation process.

From the reference you provided, it suggests that with a good pump, achieving a vacuum level of 50-100 microns is easily achievable. This level is suitable for many low to medium vacuum applications. However, for high vacuum and ultra-high vacuum applications, the pump would need to pull down to much lower micron levels.

To ensure that the evacuation process is complete, it's recommended to isolate the vacuum rig with the core tools and allow the system to stand for 15 to 30 minutes. If the micron level does not rise above 500 microns after this period, it can be assumed that the evacuation is complete.

In summary, the micron level a vacuum pump should pull down to is highly dependent on the specific application's requirements. It's crucial to have a good understanding of these requirements to select the appropriate vacuum pump and to design the vacuum system accordingly.

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(With a good pump 50-100 microns is easily achievable.) Isolate the vacuum rig with the core tools and allow the system to stand for 15 to 30 minutes. If the micron level does not rise above 500 microns the evacuation is complete.read more >>