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  #11  
Old 11-23-2013
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Re: Fresh water tank quantity indicating

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Originally Posted by christian.hess View Post
how do those work for water? I always found that for fuel no gauge ever lasted me enough...

having metal tanks I always tapped away to find the level but for water that would be nice if they lasted say 5-10 years?
If your tank is not a box type shape, you need to calibrate the gauge. Our tank is "V" shaped. What I did was start with an empty tank, I then added fuel at 5 gallons at a time. In my log book, I made a page with 6 copies of the gauge face, without the needle on it. After each 5 gallons, I drew in the position of the needle. I now know that when my fuel gauge reads 1/2 full, I have 1/3 of a tank remaining.

Been working very well for quite some time.

Greg
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  #12  
Old 11-24-2013
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Re: Fresh water tank quantity indicating

Good Discussion!

I'm going for the verticle tube idea. It's simple, and it works. I'll take pictures when I get it done.
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Old 11-24-2013
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Re: Fresh water tank quantity indicating

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Originally Posted by Dave_E View Post
Good Discussion!

I'm going for the verticle tube idea. It's simple, and it works. I'll take pictures when I get it done.
David--

Just be sure to have a tight plug on the top end of the tube; or, if you use a inverted U-Shaped tube, that both ends are connected to the discharge line from your tank, in either case to ensure that your pump (hand, foot or electrical) doesn't tend to pull air into you water line from the level guage.

Good luck...
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Old 11-24-2013
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Re: Fresh water tank quantity indicating

The vertical tube idea is great, simple solution. If you take it one step further and connect the top of the tube to the vent line (or back to the tank somehow) then there's no fiddling with a plug or any need to worry about pumping action etc.

This is a typical practice in 'gauge glasses' in industry.

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Old 11-24-2013
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Re: Fresh water tank quantity indicating

Another very simple solution is a dipstick. I made one for my diesel tank and then calibrated it by adding and marking 50 liters at a time until the tank was full. I have a small stainless steel cap on top of the tank which I unscrew and then just lower my wooden dowel dipstick in to read the level. My water tank is in the keel and at the moment I have no way of knowing the water level. I'm thinking of adding a dipstick there as well.
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Old 11-24-2013
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Re: Fresh water tank quantity indicating

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Another very simple solution is a dipstick
We have the same 'Fuel gauge' .. reliable as anything!

We use more water than fuel, obviously, and enjoy having the continual monitor on our water usage with the Tankwatch setup.
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