The 2015 Inventory of Air Emissions released today shows the Port of Los Angeles has largely continued to preserve clean air gains. The 2015 Inventory of Air Emissions released today shows the Port of Los Angeles has largely continued to preserve clean air gains.
PSI Definition: PSI is a unit of pressure expressed in pounds of force per square inch of area. It stands for Pounds per Square Inch. 1 PSI = 6894 Pascals = 0.070 atmospheres = 51.715 torr. Up Next. Up Next.
PSIG is the technically correct term to use when referring to a pressure gauge which has been calibrated to read zero at sea level (which is just about every guage you've probably ever seen). At sea level, the earth's atmoshpere actually exerts a force of 14.7 psi on all surfaces.