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The PSI (Pollutant Standards Index) scale is a measurement of air quality that indicates the level of pollutants in the air. It typically ranges from 0 to 500, with higher values indicating poorer air quality. Different regions may have variations in their PSI scale depending on the pollutants being monitored.

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1y ago

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Zero gauge pressure equals what pressure on the absolute pressure scale?

Zero (0) gauge pressure equals 14.696 PSI on the absolute scale. A lot of people will round up to 14.7 PSI for simplicity. 14.696 PSI is the pressure that is developed at sea level due to the weight of our atmosphere. The absolute pressure scale is based on zero being a perfect vacuum. Gauge pressure takes into account the atmospheric pressure at sea level (14.696 PSI). A simple conversion formula is PSIG+14.696=PSIA.


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