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lincolnmatthews's avatar
lincolnmatthews
Explorer
Apr 28, 2017

CO2/Propane alarms gone off twice since we bought camper

Purchased out now 3 yr old Lance 1181 in Jan of this year. Once while plugged into an extension cord along it went off, I figured it was an low voltage issue as the power had been off for a day or so....
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RickW's avatar
RickW
Explorer III
Apr 28, 2017
wsdepa wrote:
Snipped... Carbon Monoxide is lighter and should be installed near the ceiling.


No, it is not. The molecular weight of air (N2 + O2) is 28.8. The molecular weight of CO is 28. They mix freely due to Brownian motion.

The molecular weight of propane is 44. It will sink and concentrate near the floor. This is why the combo CO/propane detector is located near the floor and can detect both.

Camp for Science :B

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