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Old 06-09-2019, 08:37 AM   #41
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There's also those see-through fiberglass tanks. I think the largest size is only 22 gal. though. Or is it 17? Not cheap.

I'm very happy with our inexpensive gauges similar to below. They always indicate full until the propane is almost empty and then it sits in the yellow zone just above the red. From there it quickly goes to red at the very bottom of the scale. If you've got the typical 2 tank setup and periodically check the gauges, it's easy to tell when one needs a refill. Can't see the need to know exactly what the level in a tank is.

I installed permanent electric heating in our TT and almost never use the furnace. We rarely ever have to dry camp. We are able to run on about 1 30 lb tank for a season of around 50 nights for the BBQ & HWH. As long as I make sure the tanks are filled at the start of the season, we're going to get through most of the season without worrying about having to get a refill and running completely out of propane.

Only problem I've found with these gauges is they'll change with temperature.
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Old 06-09-2019, 02:10 PM   #42
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The only reliable method to use with determining how much propane is in a tank is by using a scale and weighing the tank.
Not true. There are several other reliable methods that require much less effort, just as mentioned in other posts in this thread.

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Old 06-11-2019, 08:49 AM   #43
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The only reliable method to use with determining how much propane is in a tank is by using a scale and weighing the tank.
This is true. In-fact that is how they fill them.

However that isn't what this thread is about. People are just looking for and suggesting several different good methods to let them know when they need to refill. They want to avoid the hassle of taking the tank out to find out.
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Old 06-11-2019, 09:09 AM   #44
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Nothing is "accurate". But why does it matter whether you know for a fact if it's 100% empty or just 90% empty? It's too empty to keep using, and whatever is still in it isn't going anywhere. They'll only put what it takes to get it back to 80%.


You can always use the warm water trick to get a reading on the level.
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Old 06-11-2019, 09:13 AM   #45
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The pressure gauge that the OP posted about are borderline fraudulent devices made for those that don't understand basic chemistry and thermodynamics.

The simple underlying reality is that tank pressure is not correlated to propane level; there is no relationship between tank pressure and tank level. Not everyone studied or remembers chemistry and the concept of vapor pressure. Articles like this one do a fairly good job of explaining in lay terms why pressure readings are garbage.
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Old 06-17-2019, 06:09 PM   #46
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Didn't work for us

We had a similar one. It restricted the flow from the tank so much that you couldn't use more than 1 propane device at a time. Light a second burner on the stove, and it would cut the flame by 50%.
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Old 06-17-2019, 06:24 PM   #47
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Propane

Propane is sold and measured by weight. If you want accurate readings go to Wal-Mart and buy a luggage scale. Attach the scale and lift for a few seconds and you will know exactly how much you have
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Old 06-17-2019, 06:38 PM   #48
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Propane is sold and measured by weight. If you want accurate readings go to Wal-Mart and buy a luggage scale. Attach the scale and lift for a few seconds and you will know exactly how much you have
In our area, it's filled by volume. They do however use a scale for small tanks to determine when full.


I also have rental houses that are on propane. They are also filled by volume since its kinda tough to weigh a 500 gallon tank...
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Old 06-17-2019, 06:45 PM   #49
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I use a product by Mopeka, its tied to my phone by Bluetooth, keeps tabs on both tanks separately. Just a touch of the phone and I can check walking by the trailer.
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Old 06-17-2019, 06:49 PM   #50
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And you can subtract...

Quote:
Originally Posted by cadman99 View Post
Propane is sold and measured by weight. If you want accurate readings go to Wal-Mart and buy a luggage scale. Attach the scale and lift for a few seconds and you will know exactly how much you have
And you can subtract the weight of the tank. It's stamped on the collar on the top of the tank to a tenth of a pound, preceded by the letters TW (tare weight).

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Old 06-17-2019, 07:03 PM   #51
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This appears to be only a pressure type gage, LP gas will show approximately the same pressure whether full or nearly empty, temp will be the only thing that varies the pressure on the tank until it is empty.
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Old 06-17-2019, 07:16 PM   #52
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Not sure about Harbor Freight gauge. But the one I got at Walmart for about the same amount of money works great. It read the gas level all the way through. From full to empty.
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Old 06-17-2019, 07:23 PM   #53
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I use a product by Mopeka, its tied to my phone by Bluetooth, keeps tabs on both tanks separately. Just a touch of the phone and I can check walking by the trailer.

I have one of those too. A little on the pricey side, but works great.
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Old 06-17-2019, 07:36 PM   #54
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Ditto on the mopeka gage/Bluetooth.

$60 as I remember. Works well.
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Old 06-17-2019, 07:50 PM   #55
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I use the Truma Level Check. As others have said, it's very accurate.
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Old 06-17-2019, 08:22 PM   #56
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Propane level

Mine are working great. Iíve had them on for over four years and no issues.
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Old 06-17-2019, 08:32 PM   #57
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Tank guage

AP Mopeka Tankcheck Lpg Tank Works great. Also have set that works with you smart phone.
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Old 06-17-2019, 10:57 PM   #58
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Propane gauge

Google ďMopekaĒ. It fits on the bottom of your tank and you connect to it via Bluetooth on your smartphone. It works.
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Old 06-18-2019, 12:27 AM   #59
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I use these. They work well.

X2. Mopeka units work well.
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Old 06-18-2019, 08:49 AM   #60
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I am also one to pour nearly boiling water over the tank and just watch to see where the evaporation line forms - perfectly shows fill level.
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