Lowest negative pressure (vacuum)
Lowest negative pressure (vacuum)
(OP)
Hi folks, can someone please help me with negative (gauge) pressure scales and vacuum? I know -1 bar gauge is 1 bar below atmospheric -vacuum (or almost) but does it make sense to say that a pressure gauge is ranged from 0 to (minus 2.5 barg)? If so what does this mean?





RE: Lowest negative pressure (vacuum)
RE: Lowest negative pressure (vacuum)
RE: Lowest negative pressure (vacuum)
-2 barg does not exist and is meaningful... unless you'd be using antimatter..?
RE: Lowest negative pressure (vacuum)
-2 barg does not exist and is meaningless... unless you'd be using antimatter..?
RE: Lowest negative pressure (vacuum)
RE: Lowest negative pressure (vacuum)
RE: Lowest negative pressure (vacuum)
For liquids under metastable conditions, one hears of negative pressures as in:
RE: Lowest negative pressure (vacuum)
Regards
RE: Lowest negative pressure (vacuum)
Allow me a digression in a parallel line of thought, there was once a discussion on pH, whether it could be outside the range 0 to 14. The answer to this issue is yes, pH values could be outside the 0-14 range which, BTW, is based on the Lowry-Brønsted model and at room temperature.