Propane tank level monitor

I use a pressure gauge inline on the hose, after the regulator. Pressure will drop slightly as the tank empties.

If you keep your tanks (dont swap them out for full tanks at gas station), then the monitor that tapes to the side will show the gas level. you pour warm water on the indicator and it shows where the top of the liquid propane gas is in the tank.
Mine get swapped out when it is not convenient to fill them so I don't bother with this.

Have not found a reliable propane level indicator. So I stopped trying and just do double tank. You are never away anyways from a propane seller as almost every gas station have them..

Fulltimers first year 2010-11 volunteering in north Florida, first year winter RVing.
No snow no icey roads Volunteer next to us filled us in on how to make the most of our rv's abilities to keep us comfortable.
Nothing better than keeping one tank closed. Nothing better than having both tanks open on nights the weather bunny predicts freezing temps. If tank one goes dry tank #two kicks in to keep you warm, unless thats your SO's job.
So its no different than taking the dog for his morning walk
If the changer shows your on tank two your on a trip to the refill station.

I have only used the indicator on the regulator that shows when to fill the primary cylinder.
Check daily during heavy use.

I just installed Mopeka tank sensors on my tanks. Seem to work very well.


Here it is on Amazon.

I bought two. You can label them in the app so you know which side they are on if you have two tanks.

I use Mopeka ultrasonic sensors on my auxiliary 30 and 40 lb LP cylinders. They attach to the bottom of the cylinders with magnets and can be read with a smartphone app or a standalone monitor. AP Products is the distributor...

AP Products 024-1001 Propane Tank Gas Level Indicator

Thanks for your replies! Looks like Mopeka is what I'm looking for. I'll check it out.

I don't have room to attach a gauge because I don't have clearance on the door. I do have two tanks and leave one closed, but lazy old me would rather fill both tanks at once.

Thanks for the ideas!

I have the mopeka and very pleased except for battery life. Seems like I’m always replacing the batteries. I don’t know if the new ones come with the rubber/plastic donut for the bottom of the can or not. Mine came with metal feet which were a pain…replaced with the donut and much happier.

This tank with a gauge actually works, the inline gauges are accurate when showing empty, but you already knew that.

Pressure in the tank will remain constant until the tank is almost empty, so a pressure gauge won't work. I've not used the Mopeka device. Does it indicate the level or just when the tank is empty?