Gary Name Meaning & Origin. Gary. Origin of the name Gary: From the Old English Garwig (spear of battle), a compound name composed from the elements gar (a spear) and wig (battle). Alternatively, Gary developed as a pet form of any of the various names beginning with the Germanic element gar (spear). Var: Garry.
So if you require 3 liters per minute of oxygen, that amount of oxygen is delivered to you throughout one minute whether you take 20 breaths each minute or 10. Continuous flow oxygen concentrators deliver a set amount of oxygen per minute when set to the corresponding setting.
At 500 psi with a flow rate of 6 liters per min, there are 28 minutes of oxygen left. Yes, there is enough for the trip. The service capacity for an e-cylinder carrying oxygen is 1900 psi. The volume of oxygen in an e-cylinder is 660 liters.