|
Guys... something is not adding up here.
The pressure should not drop until the tank is exhausted. The propane is in liquid-gas equilibrium in the tank, and the guage pressure will monitor the vapour pressure of the gas on top of the liquid. The vapour pressure is dependent only on tank temperature, and not content (well, not until it is about to run out that is).
Measuring the content of the tank is normally done by weight, with a spring balance. Pressure does not tell us much.
|