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What is absolute zero pressure?

Updated: 8/11/2023
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13y ago

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absolute pressure is calculated from a vacuum (0 psi) and atmospheric pressure is14.7psia or 14.7 psi above a vacuum 1psi on a tire pressure gauge is called 1psig = 15.7psia 10psig=24.7psia 100psig=114.7psia etc.

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16y ago
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14y ago

It's is the pressure measure from 0 pressure, or a vacuum. Whereas gauge pressure is measured from atmospheric pressure. To find absolute pressure, take the gauge pressure and add the atmospheric pressure (about 101.325 KPa ) to it.

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13y ago

zero pressure occurs only in a perfect vacuum (a perfect vacuum is a region of space containing absolutely nothing... not even the tiniest trace of gas)

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