Originally Posted by MoRoToRiUm
You get the same amount of gas, but the gauge won't be right until you're just about out of gas (my experience anyway).
How is it "off" though?
It shows lower pressure? It shows higher pressure(doubtful)?
Unless you have a mechanical issue with the gauge, you should have the pressure you have, and it would be off by the offset in
PV=RT (Ideal gas law), I believe.
If you wanted the "same" pressure cold as what the tank is when you fill it, you would need to fill the tank at the same temperature as you hold it at in the fridge. Otherwise, the temp change will lower the pressure slightly.
Now if the gauge is acting/reading funky, that may be a mechanical thing, but I'm not versed enough on this equipment to say what or why.
But the gas itself isn't doing much except contracting a little, and so you will lose some psi in the tank. And I would have to think it's miniscule....