Asked in Scuba

What does psi mean in scuba diving?



User Avatar
Wiki User

the amount of air in the tank per square inch. (p.s.i.)

Improve answer

Pounds per Square Inch - so the amount of pressure exerted on the tank by the air under pressure in the cylinder of the scuba diver. The more pressure, the more compressed the air so the greater the volume of air compressed within the cylinder.

for more on scuba diving, including equipment see the related link: