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Unread 08-25-2013, 07:05 AM   #3
Banjoe
On the road to being a farker
 
Join Date: 04-25-13
Location: Winnipeg, Manitoba
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You're absolutely right that the heat source is the hottest place so you must be measuring something else. Not doubting what you've done, but perhaps the upper area is getting the rising heat directly above the coals while the lower temperature on the side is measuring the internal air flow down the side of the enclosure. To get your readings (which, again, I believe are accurate), I can picture air currents rising directly above the coals to give you high temp reading, and then rolling down all sides of the cover back to the coals, giving you a lower temp on your thermometer.

If you bank your coals along the outside of your BBQ and read at the top and just above the heat, do you get the same temperature differences?
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