Best black water sensor replacement for strap-on sensors (see pics)

[thefid]

I am looking to replace/fix the sensors on my black water tank. (See pictures)

The sensors are showing half full right after being emptied and full long before it really is. Not sure if I can calibrate this system or if I should replace it.

 

[Isaac-1]

Take a serious look at the SeeLevel 709 system as it reads in 3-4% increments vs 25-33%.  I installed one a couple of years ago on my coach, total cost as a DIY project was about $250 including making a trim piece to replace the factory panel, total time to install was a couple of hours, reusing existing tank sensor wiring.

here is a before and after photo, I used a laminate countertop pre-made end splash for the panel.

 

[thefid]

Thanks for the information. (I have another project that will benefit from the laminate counter top idea)

Since I do not have the LP or battery systems run to this location, would the SeeLevel 709 be the best option?

 

[Isaac-1]

They make several models for different numbers of tanks, with and without LPG level, and with or without integrated pump and hot water switches, as well as a new bluetooth enabled model.  As to the battery monitor, it is just a voltage monitor that reads from its 12V power connection.