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06-25-2017, 06:38 AM
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#1
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Propane Tank Gauge Accuracy
(2017 Precept 31UL). When the mechanical gauge next to the tank says 1/4-tank of propane remains, I can only get the tank to take 8 gallons. Even taking into account the filling restriction, that seems awfully inaccurate. There are two red lights showing on the monitoring panel at that point, which seems closer to right. Stated another way, after you've actually "run out" of propane, how much does it take to "fill" the 16.5-gallon tank, and what does the gauge read when the appliances shut down? Seems that it should take at least 12, maybe 13 gallons? Thanks.
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06-25-2017, 07:03 AM
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#2
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Senior Member
Join Date: Apr 2015
Location: Elizabethtown, PA
Posts: 1,560
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Get yourself one of these
American Weigh Scale American Weigh H-110 Digital Hanging Scale, 110 X 0.05-Pounds
American Weigh Scale
I just had FIVE 20 lb. and One 11lb. tanks filled the above scale was extremely accurate Of all the tanks that were filled once I deducted the tare weight the tanks weighed within .1 lbs. of the weight they hold.
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06-25-2017, 07:32 AM
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#3
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Quote:
Originally Posted by bedrck46
Get yourself one of these
American Weigh Scale American Weigh H-110 Digital Hanging Scale, 110 X 0.05-Pounds
American Weigh Scale
I just had FIVE 20 lb. and One 11lb. tanks filled the above scale was extremely accurate Of all the tanks that were filled once I deducted the tare weight the tanks weighed within .1 lbs. of the weight they hold.
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The Precept has a built-in tank.
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06-25-2017, 08:05 AM
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#4
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Senior Member
Join Date: Dec 2016
Location: INDIANAPOLIS
Posts: 310
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Quote:
Originally Posted by chasfenwick
The Precept has a built-in tank.
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I was thinking the same thing! Our Alante gauge is similar. Hopefully someone has a good solution.
__________________
2016 Alante 31v
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06-25-2017, 09:30 AM
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#5
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Senior Member
Join Date: Apr 2015
Location: Michigan
Posts: 2,650
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From my understanding of propane tanks you will get max 80% full. When a tank is filled they open the bleeder some and while filling vapor releases, when it turns to a liquid they stop. If you have a 16.5 gallon tank the most you will get is 13.2 gallons of propane.
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06-25-2017, 03:18 PM
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#6
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Quote:
Originally Posted by Sundancer330
From my understanding of propane tanks you will get max 80% full. When a tank is filled they open the bleeder some and while filling vapor releases, when it turns to a liquid they stop. If you have a 16.5 gallon tank the most you will get is 13.2 gallons of propane.
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Understood. But the most I've ever gotten in a "fill" is 8 gallons, when gauge was saying less than 1/4-tank remaining. So suppose I just wait until the appliances quit working altogether, how much propane will the tank accept to get to the magic 80 percent point? What I'm trying to do is get a feel for when I'll really have to find propane, which can in some situations be a big pain.
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06-26-2017, 07:22 PM
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#7
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Senior Member
Join Date: Dec 2016
Location: INDIANAPOLIS
Posts: 310
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Quote:
Originally Posted by chasfenwick
Understood. But the most I've ever gotten in a "fill" is 8 gallons, when gauge was saying less than 1/4-tank remaining. So suppose I just wait until the appliances quit working altogether, how much propane will the tank accept to get to the magic 80 percent point? What I'm trying to do is get a feel for when I'll really have to find propane, which can in some situations be a big pain.
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Sounds like when your gauge shows 1/4 full, you can start thinking about getting a refill. No rush, just know that you are maybe really half full (or maybe more!).
__________________
2016 Alante 31v
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06-26-2017, 07:48 PM
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#8
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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That is what it seems like.
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06-26-2017, 07:50 PM
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#9
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Junior Member
Join Date: Jun 2017
Location: calif
Posts: 2
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Propane Guage on Jayco Greyhawk 31 class c, 2017
Is there an inside propane gauge ? If so, where
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06-26-2017, 07:53 PM
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#10
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Quote:
Originally Posted by johnnyG
Is there an inside propane gauge ? If so, where
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Yes, part of the main monitoring and control panel.
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06-27-2017, 07:04 AM
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#11
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Senior Member
Join Date: Sep 2016
Location: Cincinnati
Posts: 429
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No obvious solution
Discovered this problem during my first refill. Propane delivery guy says all the tank mounted gauges are inaccurate, don't believe the gauge.
I now refill when I get below 1/4 tank and have learned to live with the problem. I do not have an inside gauge in my control panel, 2016 Precept 35S.
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Nick, Sharon, Abby and Madison (wireless doorbells).
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06-27-2017, 07:46 AM
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#12
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Senior Member
Join Date: Dec 2014
Location: FL
Posts: 11,281
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AFAIK (I have no first-hand experience with these gauges), all tank mounted gauges measure the pressure in the tank. That pressure changes very little until the tank is nearly empty, then the gauge will show lower pressures.
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Full timing: Some will think you're crazy, some will be envious, just enjoy the freedom!
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06-27-2017, 07:54 AM
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#13
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Senior Member
Join Date: Mar 2015
Location: Abingdon
Posts: 6,177
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Truma LevelCheck.
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2013 Jayco Eagle 328 RLTS
2021 Keystone Montana 3121RL
2013 F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Equal-I-Zer™ WDH & B&W Companion
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06-27-2017, 07:56 AM
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#14
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Member
Join Date: Sep 2016
Location: PETERBOROUGH
Posts: 57
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Quote:
Originally Posted by oldmanAZ
AFAIK (I have no first-hand experience with these gauges), all tank mounted gauges measure the pressure in the tank. That pressure changes very little until the tank is nearly empty, then the gauge will show lower pressures.
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Many built in tanks with gauges do have floats. The float to gauge "connection" is magnetic (i.e. no mechanical joint to fail and leak.
As the connection is direct and magnetic it is prone to wild fluctuations due to minor movements and even temp.. And is also very inaccurate as they are not designed specifically for each application/tank size. They are designed to be an indicator only. Which is the same direction they took designing the fuel gauges on my Seneca lol.
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