The relationship between the pumping speed of a vacuum pump and pressure
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For example: the parameters of a vacuum pump are a vacuum level of 1 hPa and a gas evacuation rate of 40 m3/h. What is the amount of air drawn out when 1 hpa has not yet been reached during the drawing process? For example, when the vacuum is 10 hPa, how much gas is drawn out? Is it 40 m3/h at a vacuum of 10 hPa, or still only 40 m3/h at 1 hPa? In other words, has the weight of the gas drawn out changed?
The pumping volume during the process remains constant in terms of weight, that is, the weight at 1 hPa. :)
Please ask the manufacturer for the pumping characteristic curve, and you won’t have to worry about this issue
Hello, your issue should have been resolved long ago. I have only been in the vacuum industry for a short time. I’d like to answer your question. Please point out any mistakes if there are any:D. I’m learning it on my own too*: lol. I think that at 10 hPa, the volume of air will increase slightly, but not significantly. For liquid ring pumps, the gas flow rate is generally high in the range of 100 mbar to 300 mbar; I’m not too sure about other types of pumps. Also, the higher the vacuum, the lower the air volume will be. My personal opinion is that the higher the vacuum level, the thinner the gas in the container, so there isn’t much gas left to be pumped out This can be seen from the equipment performance curve. I’m not sure if my answer is correct; I would appreciate your guidance.
Hello, your issue should have been resolved long ago. I have only been in the vacuum industry for a short time. I’d like to answer your question. Please point out any mistakes if there are any:D. I’m learning it on my own too*: lol. I think that at 10 hPa, the volume of air will increase slightly, but not significantly. For liquid ring pumps, the gas flow rate is generally high in the range of 100 mbar to 300 mbar; I’m not too sure about other types of pumps. Also, the higher the vacuum, the lower the air volume will be. My personal opinion is that the higher the vacuum level, the thinner the gas in the container, so there isn’t much gas left to be pumped out This can be seen from the equipment performance curve. I’m not sure if my answer is correct; I would appreciate your guidance.