I would like to ask everyone about the consequences of water entering a pressure gauge
Thread Content
Suppose there is a nitrogen storage tank equipped with a pressure gauge, and water starts to flow into the tank so that the water level gradually rises above the level indicated by the pressure gauge. How does the reading on the pressure gauge change during this process?
A pressure gauge can measure wind as well as liquids; there’s no difference, right?
Just let water in if it does; just make sure it doesn’t freeze. Once the water has drained, take it apart, blow on it and let it dry, and it’ll be usable again
There isn’t much change; it can sometimes be ignored
The pressure in the tank depends on the pressure in the gas phase; as long as there is a gas phase, the PG indicates the pressure of that gas. As for how the gas phase pressure is maintained, it depends on the pressure control method for the gas in the tank. If water enters a sealed tank, the gas space is compressed and the pressure gradually increases, until no more liquid can enter the tank (depending on the hydraulic pressure) ； At this point, you release the gas (evacuate it), and the liquid will flow in until it fills the entire tank; since there is no gas left, the pressure inside the tank equals the \"hydraulic pressure\" of the external liquid. I agree with what the brother upstairs said: as long as there is gas in the tank, the reading = vapor pressure + hydrostatic pressure of the liquid column. @jiaguoyun
The impact of water inflow is minimal; just make sure it doesn’t get frozen
The impact is minimal; some pressure gauges even have oil filled in them to allow for longer use.
Common issue: the pressure reading for spring-type models is higher than the actual value; if it is waterproof, the pressure reading is normal