CO2 Tank weight vs. HP Reading

[jplickel]

I recently installed the resistor on the Danby and it is def doing its job. The liquid temp is now ~37 deg. I keep my CO2 tank inside the refrigerator.

Before installing, the HP read at ~500 psi. Now it is well below 500 psi.

I weighed the 5# CO2 tank and it weighs ~12lb, indicating I have about 4.5# of CO2 left (tank has a tare weight of 7.5).

What should I trust the CO2 tank weight or the Regulator reading?

Could it be the Danby regulator is really no good or should I expect a big decrease in HP reading as the temp gets really low?

Thanks for the help

[lunkhead]

The pressure drops as the tank cools, when the tank gets near it's empty weight, time to refill.

[jplickel]

Thanks, Ill trust the weight.

Awesome forum...although I am drinking cold beer watching my Lakers get blasted...bitter sweet bliss.