Morgans wrote:
"Jay Honeck" wrote in message
newsPtqd.410498$wV.201320@attbi_s54...

Many of us cold-weather pilots worry about carbon monoxide in the cabin,
especially in winter. After using the "dot-that-changes
color-on-a-piece-of-cardboard" carbon monoxide detectors for the last 9
years, we decided to look at the new battery-operated detectors.



I settled
on mounting it just to the left of the pilot's yoke, on the side panel.


Jay Honeck


That is the correct place for a CO detector, as CO is heavier than air.

Carbon is mass 12, oxygen is 16, so CO has a mass of about 28 g/mole
as compared to the major components of air: O2 at 32 g/mole and N2
at 28 g/mole. So it should mix very well. If it's being brought in
by the heater then it would have a slight tendency to rise initially
until it cools to the ambient temperature in the cabin.