01-28-2020, 07:16 AM
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#11 (permalink)
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Location: Granbury, TX
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Quote:
Originally Posted by Rusty
Gauge pressure is different then absolute pressure. They will never read the same.
The simplest way to explain the difference between the two is that absolute pressure uses absolute zero as its zero point, while gauge pressure uses atmospheric pressure as its zero point. Due to varying atmospheric pressure, gauge pressure measurement is not precise, while absolute pressure is always definite
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Agree here. Your gauge/meter is probably off by maybe .2/.3 psi, depending on height above sea level. At sea level, atmospheric pressure is 14.7 psi.
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