The air pressure did not decrease but increased instead in the experiment
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I have a question for the experts: I conducted a pressure test on a container at 3 p.m. yesterday using nitrogen, and when I checked it again at 7 a.m. today, the reading on the pressure gauge had increased slightly. What is the reason for this?
1. Thermal expansion and contraction； 2. Someone has topped up.
Also, what you’re doing with this pressure test is incorrect and very dangerous.
No one has touched it, and if the watch is working fine, then it’s definitely weird
Is there a leak in the valve of the air pipeline?
According to the ideal gas law, in a closed space, an increase in temperature leads to an increase in pressure as well. The temperature at 3 p.m. should normally be higher than in the morning; your situation is hard to explain. Is it safe to leave it for an overnight pressure test?
It is unsafe; temperature has the greatest impact.