Mike Hord wrote:
> The other possibility I'd look into would be a differential gauge at the
> top,
> with a tube running down into the beer and another open to the air.
> Automatically self corrects for atmospheric conditions...

And how should that work ?

Is your plan that the tube runing down the tank (to the bottom ?)
should measure the pressure at the bottom ? That tube would have to
be air filled, right ? An the tube be open at the bottom ?
But that air will compress, and as the liquide fills up from the
open bottom into the tube, the pressure (as measured
at the top of the tube) will decrease at the same time.

And if you have a leakage in that tube so the air is let out,
the liquid inside the tube will raise to the same level as
outside of the tube, and the measured pressure diff will be zero.

Get an alcololic meter (the one you breath into) and use the
reading to calculate the amount of consumed beer :-)

Jan-Erik.

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