>I'm probably just going to build a version using the pressure sensor and a
>version using the Liquid Level Transducer... i have two beer tank
>assemblies afterall (for racing) so we shall see which one is the better.
>I'm still a bit hazy on the differential pressure sensor setup though. The
>sensor has two ports for tube attachment. You take the tube (sealed at one
>end, right?) and run one straight down through the tank, the other you
>leave hang outside. Then the sensor reports the air pressure difference in
>the two as the water squeezes the one tube harder or softer according to
>how much exists in the tank.

Exactly what I was suggesting.  It almost certainly won't give you a *real
value,
it will have to be interpreted, but if you push a button to log the full
scale value,
then divide the current value by that full scale value, it'll give you the
percentage
remaining.

Mike H.

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