Larry,

Actually atmospheres (atm) are the easiest to understand. At ambient pressure, the atmospheric pressure is 1 atm.

The conversion to psig is

1 atm = 14.696 psi = 1.03 bars = 760 mmHg

but who's counting.

In the US, we mostly use psi, but in Europe, they love to use bars. I don't mind using bars because it so close to atm.



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'89 420 SEL
'90 300 SEL
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