Gauges for Fat Sacs
 

Has anyone on here tried or thought about a way to make a gauge for fat sacs to so you could see how full they were without looking? I realize it's not that big of a deal to just open the hatches and look, but it would be cool to not have to. I have some ideas but I'm not sure if it would actually work or be cost effective.

Timer module with an output to a gauge. Tige does it on their 2010's, but it's not shown on a gauge, but the LCD screen.

I don't know what type of senders they use, but you can buy the nautique gauges
http://nautiqueparts.com/gauges_ballast.aspx

It would seem that you would have to use some sort of flow meter on the input to each bag to gauge how much water is going in.

I was was gonna say some kind of flow meter would be the best. So ^^^^^^^^^^ X2.

Yea using a flow meter was what I was thinking of too. You would have to run the output signal from the flow rate sensor through some circuitry to convert it to a signal that corresponds to a volume that has passed through the flow meter. Then your gauge would also have to be calibrated to match the signal corresponding to the volume.

Just put a vent line on your sac. When you hear water coming out the side of your boat you know its full. Cheap and easy

you could do something like this
here
a little smaller one
here
a bit spendy though for what it does for you