For LP tanks I believe one needs to be a little creative. After much research it looks like the best measurement is by weight. Below is a picture of a...

Now the last 2 posts were a little on the confusing side for me, so here are both ways. Not sure as to what went wrong in my post above. Sorry "http...

@zander you may think about adding 4 or more of these sensors to the side of you tank(s) and connecting them to an Arduino or Pi. Afix them at 1/4, 1/...

Interesting, and it is probably due to the lack of supplies, but there are a lot less thin film pressure sensors out there now. I have not looked for ...

@zander The only time my toilet had an issue was when the park's water pressure dropped to around 10PSI and the spring in the flush valve I guess was ...

@zander What about a "Weight Pressure Pad" between the bottom of the tank and the straps that secure them to the RV floor. It might take a little sign...

@zander As for the SeeLevel install. I cleaned the tank with alcohol prior to installing the tape and the sensors. Not sure as to what the issue is, b...

@zander If you are reluctant to put a hole in the black tank (it is not under pressure and the grommets are a very tight fit), take a look at where yo...

@zander Thanks for the Welcome. I see that I am not the only one with the SeeLevel tank system that is not operational. I have opened the the under...

@inq Thanks for the welcome. I will keep the forum updated with the status of my projects and results, whether successful or not. The creek monitor...