Battery Operated Propane Detector? - Fiberglass RV


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Old 05-05-2007, 06:51 PM   #1
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I just measured the current that our propane leak detector draws and found that it is 1/3A! That's 8AH for a day, 56AH for a week. A significant fraction of our 105AH Trojan battery. Maybe that's the reason the previous owners had disconnected it.

I want to be protected, so I am wondering if there aren't more economical ones (in terms of AH's) available? I did find one on the web that ties in to the "house" battery and consumes about 1/20A, or 1.2AH per day, or 8.4AH per week. But the following question seems very reasonable and has me puzzled: My wife asked, "Since there are 9V battery operated carbon monoxide detectors, aren't there 9V battery operated propane detectors?" So I am relaying her question to you.

Do you know of any?

Thanks.

Art
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Old 05-05-2007, 08:23 PM   #2
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I have a handheld battery operated one, but it is more designed as a "sniffer" for finding leaks, not a warning system that there is one.

I still need to redo this in my 17, but in my 13, I simply put a small one in that ran off the house battery, and a switch to cut the juice when not needed. It was never on when the trailer wasn't in use.

I did not find it a big draw on the battery, even when boon docking for a week or more.
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Old 05-05-2007, 08:57 PM   #3
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In underground coal mines where i work, we have gas detectors that work off of rechargable batteries.I would think a similar detector would be made for normal consumer.
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Old 05-05-2007, 09:04 PM   #4
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If the unit you have now is good but you don't want to hook up to your house battery, why not buy a small 12volt battery ie Motor bike/ATV battery.This might work.Put in switch and turn on and off as desired.
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Old 05-05-2007, 09:06 PM   #5
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Ours is a garden variety one of about 1/20Amps. My setup is just like Gina's, with a cutoff switch. Used only at night, and the little green LED works nicely as a night light for those bathroom visits. Negligible drain on the batteries.
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Old 05-05-2007, 09:10 PM   #6
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I think this one is battery operated.
http://www.acehardwareoutlet.com/(alrqccma...ge=5203351b.jpg
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Old 05-06-2007, 12:11 AM   #7
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Quote:
I just measured the current that our propane leak detector draws and found that it is 1/3A!
Art

Art,
.3 Amps (300 miliamps) seems like a lot of current for this type of device. I just checked the specifications my Safe-T-Alert 40 series LP gas Alarm. It's speced at 46 miliamps, thats .046 amps. Usually current specifications for this type of electronic devices are speced at the high side. Therefore 30 miliamps measured sounds about right. It's sometimes easy to misplace a decimal point, so you might want to recheck it.
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Old 05-06-2007, 12:18 AM   #8
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Quote:
I have a handheld battery operated one, but it is more designed as a "sniffer" for finding leaks, not a warning system that there is one.

I still need to redo this in my 17, but in my 13, I simply put a small one in that ran off the house battery, and a switch to cut the juice when not needed. It was never on when the trailer wasn't in use.

I did not find it a big draw on the battery, even when boon docking for a week or more.

A word of caution about adding a switch to turn off an LP gas detector. If there's a gas leak and you turn on the detector bad things could happen. If there's a leak you want the detector screaming before you open the door or do anything. With 46mA draw on your battery is not enough to notice and might even be a good thing.
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Old 05-06-2007, 05:44 PM   #9
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Byron,

Well, yes, ahem! I did have a problem, but it was converting from decimal to simple fractions! The draw is actually 133 mA. Still sizeable, though. I have ordered one of the units you recommended (at 46 mA) from Amazon.com.
Thanks for the infor.

Art
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