Are we mixing pressure kgs with mass kgs?
Let me first clarify that at a same cng_dispenser, if every car is filled to the brink, the final pressure will always be the same. The dispenser shuts itself up reaching a certain value.
Well for the second part, cng is metered in Standard Cubic Feed per Hour(SCFH) and which is convertable to mass flow i.e. Kg for Lay man's usage.
SCFH is a check if someone tries to be cheeky increasing the temperature. Increasing the temperature tends to sell less CNG but same meteric cubes. I think in pakistan, they sell hotter cng (No check n balance) which when cools down gives less mileage. But sensing the temperature, and actual flowrate tries to nullify all cheatinga ever made on upstream side.
Its all A_Level Physics & common sense - No scroll back and go thru different comments :). LMAO