Author Topic: Auto Tuning - Group Results  (Read 67021 times)

DivotMaker

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Re: Auto Tuning - Group Results
« Reply #120 on: December 19, 2015, 02:09:33 PM »
You can also use a pan of sand, if you have any.  Just something to absorb/hold heat, like meat would.
Tony from NW Arkansas
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NVW-SSV

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Re: Auto Tuning - Group Results
« Reply #121 on: December 19, 2015, 02:55:27 PM »
AUBER WSD 1200 GPH purchased 12/2015 /#2

Using a back yard stone paver, probably 2.5 lbs...placed on middle rack -  no water bowl - permanent probe about 1/2 inch below top rack (~4.25"below top) and checking against both Mav733 probes...

Bypassed #2
P = 72
I=  109
D=  277

Before bypass occurred (#2 all other things same)
P=  103
I=   115
D=  278
 
After bypassed tuning, I noticed that when setting up a program  C1 =  322*F -1.5 hours, it climbed to 327*/328* and maintained there for at least 25 minutes, before I manually lowered the C1 time to make it drop towards C2 = 235*F.  Is this normal to miss the target temp this much and stay there for that long?

*Also noticed that the MAV 733 probes read approx 14 and 20 degrees higher than AUBER , consistently, when temps are rising...and take around 1/2 hour to align with the Auber readout when falling/leveling from 322*F to target of 235*F.

Also noticed that when setting up a program  C1 =  322*F -1.5 hours, it climbed to 327*/328* and maintained there for at least 25 minutes, before I manually lowered the C1 time to make it drop towards 235*F.
 
Are these PID numbers in the ballpark/OK?  Wanting very much to tune this in tightly before my first "bypassed Auber" cook.
Jody from western NC

Smokin' It #2 - Auber 1200 & bypassed
3.5D Wifi (07/18)

DivotMaker

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Re: Auto Tuning - Group Results
« Reply #122 on: December 19, 2015, 04:19:05 PM »
Hi NVW (by the way, a first name in your signature line is nice...much more personal),

Your numbers look way off, to me, for a #2.  Mine were:

P   62
I    902
D   112

I wouldn't worry much about the Maverick difference; that's probably due to probe placement.  This is one of the reasons the permanent probe is great.  If you use the drop in probe, where you put it will change it dramatically.  The only way to get your Mav to read the same as the wall probe would be to attach it right beside it. 

I'd try plugging the above settings in and try it.  These work great in my #2.  Not sure why your autotune numbers are so low for the "I" setting.

Tony from NW Arkansas
"Official Smokin-It Test Pilot"
Smokin-It Model 1, 2D conversion, and 3D
Auber PID, NexGrill 896 6-burner, CharBroil Big Easy, Anova Precision Cooker w/WiFi
Wife, Son and One REALLY Big Dog!

RSNovi

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Re: Auto Tuning - Group Results
« Reply #123 on: December 19, 2015, 04:35:09 PM »
I don't know anything about the Auto-tune method, but what you are describing is a steady state error.  The I term is supposed to correct the steady state error.  With your I term being off I would say that would account for the error in the temp over a long time.
Chris - Michigan
SM025
PG500
Tappecue
Maverick 735
iGrill 1

NVW-SSV

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Re: Auto Tuning - Group Results
« Reply #124 on: December 20, 2015, 01:18:34 PM »
Just did another autotune with wet, 60*F sand in a 2lb loaf pan, 55* ambient temp - and a round 4lb landscape stone. 

P= 68
I=898
D=224

Sound better? 

I'll run a dummy load for 235*F for about 2.5 hours and see what happens.  THANKS for all the help, fellas.

^SS-M^N  ( = user name)
Jody from western NC

Smokin' It #2 - Auber 1200 & bypassed
3.5D Wifi (07/18)

DivotMaker

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Re: Auto Tuning - Group Results
« Reply #125 on: December 20, 2015, 02:36:50 PM »
Those numbers look much better!  Let's see how it goes!
Tony from NW Arkansas
"Official Smokin-It Test Pilot"
Smokin-It Model 1, 2D conversion, and 3D
Auber PID, NexGrill 896 6-burner, CharBroil Big Easy, Anova Precision Cooker w/WiFi
Wife, Son and One REALLY Big Dog!

NVW-SSV

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Re: Auto Tuning - Group Results
« Reply #126 on: December 20, 2015, 09:04:34 PM »
Everything worked out great with the dummy load, sand and stone.  I appreciate the help getting this baby dialed in and so far LOVE the Auber PID controller.

A pic of the dummy load (sand was still a little moist after the final autotune)
« Last Edit: December 21, 2015, 08:05:47 AM by NVW-SSV »
Jody from western NC

Smokin' It #2 - Auber 1200 & bypassed
3.5D Wifi (07/18)

MicKM

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Re: Auto Tuning - Group Results
« Reply #127 on: January 20, 2016, 10:32:39 PM »
Hello folks
I tried the auto tune last night with the permanent probe.
I placed two brinks at the top (cant believe how hard it is to find spare bricks in Singapore). Foiled in correct places, added the water.
My results came in as;
P57
I063
D515
I am thinking my I figure is definitely wrong.
Any suggestions and a great big thanks for this wonderful forum of advice and suggestions.
Best regards
Andrew
Aussie Smoker enthusiast in Singapore

SuperDave

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Re: Auto Tuning - Group Results
« Reply #128 on: January 21, 2016, 12:37:48 AM »
Mick, what unit are you running?  A foil pan of wet sand also works well as a heat sink.  Can we get more information like where your probe placement is? 
Model 4, Harrisville, Utah

MicKM

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Re: Auto Tuning - Group Results
« Reply #129 on: January 21, 2016, 03:14:26 AM »
Hi Dave, I have a #2.
Probe is approx 3 inches from roof centred.
I have a WSD-1200GPH Auber.
The plain sand is harder to find than the bricks. In Singapore, you pay for everything. I might have to sneak to the beach and get a bucket!
I did soak the bricks in water.
I think I failed to program the PID first, I simply went to part 3. of the instructions (typical), I will re-soak, re-insert and do program first, then do the auto-tune.
I hope I get it right this time.
Best regards
Mick
Aussie Smoker enthusiast in Singapore

MicKM

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Re: Auto Tuning - Group Results
« Reply #130 on: January 21, 2016, 05:17:13 AM »
Hi Dave,
It has been running for approx 1 hrs on the program. The display keeps showing;
At 144-148 on the right and -H- on the left.
The maverick temp gauge shows 162....
Does that seem right?
Best regards
Mick
[/quote]
Aussie Smoker enthusiast in Singapore

MicKM

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Re: Auto Tuning - Group Results
« Reply #131 on: January 21, 2016, 08:22:34 AM »
Hi Dave,
Sorry, it may seem Im stalking you, but it's the time difference.
OK, second auto tune completed.
Results
P57
I461
D365
As a side note, the auber kept showing 225 as temp once completed (no longer flashing), the Maverick said 235?
I cant say they were in the exact same position as I didnt open to check and inserted Maverick after start.
How do those numbers seem?
Best regards
Mick
[/quote]
[/quote]
Aussie Smoker enthusiast in Singapore

74redone

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Re: Auto Tuning - Group Results
« Reply #132 on: January 21, 2016, 08:42:45 AM »
Okay thanks guys. I ended up use sand and its working great! Prime rib pork butts all coming out great. Definitely was worth the money.
S2 and stand

SuperDave

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Re: Auto Tuning - Group Results
« Reply #133 on: January 21, 2016, 09:49:51 AM »
Hi Dave,
It has been running for approx 1 hrs on the program. The display keeps showing;
At 144-148 on the right and -H- on the left.
The maverick temp gauge shows 162....
Does that seem right?
Best regards
Mick
It sounds like you are plugging the probe into the wrong port.  The left window is the box temp (Probe 1) on the back of the Auber.  The right window or Probe 2 port is the meat temp probe.
Model 4, Harrisville, Utah

MicKM

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Re: Auto Tuning - Group Results
« Reply #134 on: January 21, 2016, 06:38:39 PM »
Hi Dave, no definitely in Port #1
Do the numbers seem off?
P57
I461
D365
Best regards
Mick
[/quote]
It sounds like you are plugging the probe into the wrong port.  The left window is the box temp (Probe 1) on the back of the Auber.  The right window or Probe 2 port is the meat temp probe.
[/quote]
Aussie Smoker enthusiast in Singapore