Waste Allocation Load Lifter - Earth Class
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Join Date: Apr 2009
Location: ☼ Clearwater, FL ☼
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You can measure gravity from inside the wort, not at the top. Put a piece of bouyant (i.e., sp.gr. < 1) on an arm and measure the angle that it hangs at. A little accelerometer device (I like the ST Micro devices) can easily measure this.
The device needs a level bubble to be held exactly level inside. Hold it inside with a magnet on the outside.
Transmit the gravity with RF (lots of simple small solutions there) to a display on the outside. Maybe the "holding" magnet and the simple display are on the same assy.
I use something similar for my saltwater fish tank.
And you, my father, there on the sad height,
Curse, bless, me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light.