does anybody know what psia is

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does anybody know what psia is

Postby Student » Thu May 12, 2005 10:13 pm

Hi there,

I came across the value psia, i think it is a psi but with a different meaning.
Does anybody know what it is?

Postby Guest » Thu May 12, 2005 10:34 pm

psi-gauge. Pressure is measured either "gauge" or "absolute."

Gauge is pressure is pressure relative to the current atmospheric pressure, which is about 14.7 psi at sea level.
Absolute pressure is measured relative to vacuum, and is typically about 14.7 psi higher


Postby student » Sat May 21, 2005 10:58 pm

aah, now it makes sense to me, thanks very much.

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