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Old 02-04-2012, 09:32 AM   #52
woodpelletsmoker
is One Chatty Farker

 
Join Date: 03-29-11
Location: Beijing,China
Default As long as the PID are tuned in a smoker, you can keep them

Quote:
Originally Posted by landshark530 View Post
[Dear landshark530, if you fine tune P.I.D, temperature fluctuation shall be under 1or 2 F.
First set I=0. and D=0. Try P from a small value, say 5, and increase step by step, till temperature goes crazy, out of control. then drop P again step by step till the temperature is stable. the P value shall be 60-70% of this stable value. Then try different I and find the best value, last D. This is a trial and error practice. Different application may have different PID value.
For long cooks (5-14 hours) with temps set in the 250 to 350 range, what would be a good setting for I and D ??

Should they be changed at all?? Why was the default at 60 and 240?

Thanks[/QUOTE]

If you change a new pit, you need to tune PID again.
At first I just use the default for other application. not for smoking.
Smoking in China is not popular, or not accepted.
I develop all these things just for export
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