level sensors for 4" deep tanks

[cici224]

Hi All,
I have a 1968 Sovereign that I am totally starting over with restoration. I am putting in a composting toilet so do not need a black water tank but I am installing 2 grey water tanks under the floor chassis. They are both 50 x 21 x 4, VERY SHALLOW. I'm wondering if any of you have tips on the best level sensors for such a shallow tank.
Thanks!

[Tim A.]

I think there is little doubt that the SeeLevel system is today's best for indicating tank level. With 4-inch deep tanks, it will only give you a general indication, but that is better than none.

As an aside, the sloping bottom of our greywater tank together with the location of its SeeLevel sensor makes it appear to fill up to about half full very quickly. We know that and live with it because the accuracy improves as the tank fills further.

Tim

[cici224]

Yes, I would like to use the SeeLevel sensors but I don't think I can. Theses are the specs for SeeLevel models and tank heights. Like I said, mine are only 4" deep.
Recommended single senders for tank heights.
710JS is recommended for measurable space between 4 1/2” to 7” high.
710ES is recommended for measurable space between 5” to 13” high.
710SS is recommended for measurable space between 14” to 17” high.

[Tim A.]

I suspect that you can use the 4 1/2" to 7" sensor by having the 4 1/2" position at the top of the tank. The reading at empty or nearly empty would not be accurate, but between 1/4 full and full would read correctly.

I suggest checking with the manufacturer to be sure.

Tim