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Old 03-29-2017, 10:09 PM   #1
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Propane tank gauge

Does the chinsy looking gauge on the propane tank work? Mine hasn't moved off the 1/2 mark for the last week of camping. Anyone have experience with this?
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Old 03-29-2017, 10:29 PM   #2
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Most of those cheap gauges measure the pressure in the tank and will show when the tank is out of propane. The pressure of the propane vapor is nearly constant so as long as there is liquid in the tank, so the pressure gauges don't help very much.

My tanks are vertical on the TT tongue and I can feel and tap on the tank side and make a reasonable guess as to how much liquid propane is left.
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Old 03-29-2017, 10:55 PM   #3
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Quote:
Originally Posted by Midwest Jeffk View Post
Does the chinsy looking gauge on the propane tank work? Mine hasn't moved off the 1/2 mark for the last week of camping. Anyone have experience with this?

You know, mine seems to go down to 1/2 and then kind'a hangs there too. I was thinking about just running it down, in the driveway, and seeing if it was going to go below.

But Spring Break called. I had to refill and it took 6.8 gallons to "fill". *If* the tank is about 13 gallons then, yeah, 1/2 a tank would be 6.8,

But no one 100% fills a propane tank. You go to 80%.
So if that's the case, then I was below 1/2 and the gauge is whacked.


I dunno.
Maybe on the return trip I'll just let it empty and watch the gauge.
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Old 03-30-2017, 05:24 AM   #4
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I've been using a Gauge Master gauge and it works pretty darn good and seems somewhat accurate.
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Old 04-03-2017, 07:07 PM   #5
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Hi Jeff,

I'm assuming you have a class C.

Mine works fine with no issues. It can last quite a while as long as you don't use the heater, in cold weather it can chew up quite a bit.

I find my gauge works well enough for me.
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Old 04-03-2017, 07:20 PM   #6
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Our motorhomes have a permanently mounted ASTM propane tank and the gauge works off an internal float valve. It has nothing to do with tank pressure on our tanks. The internal float transfers its reading magnetically (through a diaphragm) to the gauge dial you view at the tank. And as others have noted they are known to not read very accurately.

What I have found on all of my 3 owned Class C units is, that while they may not read the exact level, after a while I could use the gauge to predict the actual level. My last unit read artificially high, when the tank was empty it would show 1/4. My current Seneca is just the opposite, when empty it shows below empty. But I have learned to interpolate the readings and now can generally predict closely what it will take to fill the tank.

It will take some use but I suspect eventually you will be able to do the same.
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Old 04-03-2017, 07:32 PM   #7
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I'm with "oldman" on this, they tell you when it's empty. I've seen the mechanical gauge an I think it'd be a good choice particularly if the TT has a single tank.
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Old 04-03-2017, 08:38 PM   #8
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A LOT of evaluations, critiques on a variety of propane tank gauges. My experience, for what it's worth - bought a "cheapie" from WalMart for $11 ?), attached it at various times to my home 20 # tank and my TT 30 # tank. It NEVER registered over 1/2 full in either application (when both tanks I knew were full). HOWEVER, it DID alert me as it went into its "Lower Zone - RED" that I might need to look for some more propane. Having said that though, when I went to refill that 30 # tank, I needed only 2.5 gal on that 7.4 gal tank. I suppose one could surmise, "it erred on the side of caution" - which I would prefer. BUT - I also would offer it isn't very accurate. This, obviously, was a portable gauge. Infer what you will.
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Old 04-03-2017, 08:56 PM   #9
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You really don't have many choices when it comes to gauges on these style tanks that motorhomes have. You generally have to live with the installed gauge which works off the internal float.

One thing I did not mention before is that if you try to read the gauge with the unit not level it can change the reading significantly. To be "repeatable" you have to have the unit level.
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Old 04-04-2017, 03:51 AM   #10
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poor hot water down the side of the tank and the tank level will be evident. Cost 0$
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