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Homeroasters.org » BUILDING A ROASTER » Fluidbed Roaster Discussion

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500g Air Roaster
Beaner	#41 Posted on 03/29/2012 10:30
1/4 Pounder Posts: 153 Joined: 07/22/2009 20:03	I'm glad you started this thread. I've been wanting to build something better than my Jethro2 and this thread kick started my brain. Already found a 5A mini vac at Goodwill and the motor looks pretty much like yours. I've wondered about those motors but never gave it much thought until this thread. Hmm, now I just have to scroung the shop for the rest of the parts. Thanks for posting.


greencardigan	#42 Posted on 04/16/2012 05:20
Pounder Plus Posts: 538 Joined: 11/21/2010 20:23	I'm still having trouble getting correct temperature readings from my thermocouple. FC is at 190C (374F) SC is at 215C (419F) I'm expecting the temps to be about 10C higher. Does anyone else have this issue in an air roaster? Should I just ignore it? Maybe I could just add an adjustment factor in my controllers code.


greencardigan	#43 Posted on 04/16/2012 13:38
Pounder Plus Posts: 538 Joined: 11/21/2010 20:23	The perf plate is a cut down sink strainer.


lmclaren	#44 Posted on 04/16/2012 20:19
1/4 Pounder Posts: 156 Joined: 03/19/2011 22:17	If you can sit them together and it still reads different I would replace. I try to use identical tc's if I can. If one has a different case / probe to the other then you may get a difference based on the inertia. You could try swapping and see if the problem follows the tc or the channel? btw, my fc is between 213 and 215 on the ir when the tc reads all over the place, sometimes it is 20c off. I found it sensitive to placement. When the beans are floating you are really reading the air temp around. I found increasing the air speed showed a different temp. Lee

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