Solutions for LPG tank monitoring

Linear temperature compensation doesn’t ask a lot.

What is this? Where can you get it?

Measuring the pressure in an LPG bottle tells you nothing about how much liquid is in there. The pressure is constant (for a given temperature) until all the liquid has evaporated.

That’s correct. Measuring pressure you han only detect when tank is almost empty.
I have pressure detection on my underground tank, it gives just margine to call for refill.

I have an actual gas meter with pulse output that I use. Mine reads in CF, but they make ones that measure in liters.

Since I have a 500 gallon tank, measuring the weight would be difficult (and need to meet intrinsic safety standards, since there is some venting of propane when it gets filled). Mine has a remote ready dial on it, but it doesn’t look that accurate.

My meter is not temperature compensated, but a little math can fix that (if I really cared enough to do it again).

I think I’m going with this, using the load cell and amplifier I linked above.

With the 10:1 lever advantage, I’ll be lifting 20kgs for two full bottles and there’ll be an accurate reading.

Using that diagram, if your setup is similar, why cant you just use scales like I linked above? Just curious.

There’s far less hardware in my lift system and I don’t need to lift the bottles onto anything.