Problems with vacuuming in the mixing tank
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This post was last edited by newmanking on 2016-3-31 at 13:58. I have a 100-liter tank; I tried to create a vacuum, reaching -0.092 MPa, but I couldn’t go any lower. So I turned off the pump to maintain that pressure. After some time, the mixing motor kept running, and after two hours the pressure increased to -0.095 MPa. What’s going on? Am I a beginner? Could it be a problem with the watch?
Has the material changed?； Such as temperature, volume
There is no material inside; it’s just under vacuum
This change isn’t significant; small fluctuations in factors such as temperature can easily cause it.
It is likely that the increase in temperature causes the gas inside the reactor to expand, leading to an increase in pressure. Similar situations were also encountered during pipeline pressure testing.
The temperature change you’re seeing is quite small – only -0.003 over two hours – but this change might be related to temperature!
There’s no doubt that there’s something wrong with your watch – you’re violating the laws of physics……
Are you using a digital gauge or a mechanical vacuum gauge?