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MES Temperature swings?

post #1 of 5
Thread Starter 

Hey guys, I just got an MES a few weeks ago, and I'm seeing crazy temperature swings when measured with my igrill2.  I recognize that the masterbuilt ambient thermostat is off, but it also tends to lag actual temperatures quite a bit.  basically when set to 208 *(I was aiming for 225 internal temp as read by my igrill2 ambient probe).  I get swings from 205 to 240.

 

Are there any mods that can help alleviate this?

 

My best guess is that the thermostat is getting a bunch of heat soak from the interior walls of the cabinet thereby making it read low, and read slow.  Has anyone tried insulating the thermostat from the interior walls of the masterbuilt and had any success?

 

Thanks,

post #2 of 5

I can't help with your question, but I'm sure one of the MES guru's will be along soon to give you an answer.

 

In the meantime, would you swing by "Roll Call" & introduce yourself, so we can all welcome you to SMF!

 

Al

post #3 of 5

Hi "nPoc",

That's a pretty common problem with most MES units, and other electric smokers.

 

I wrote this (below) up awhile back to show how I dealt with that problem with my older Generation #1 MES 40.

 

My new Gen #2.5 has a much smaller cycling spread.

 

 

This should help:

http://www.smokingmeatforums.com/t/208552/avoid-temp-swings-in-mes-by-bear

 

 

Bear

post #4 of 5
Thread Starter 

Thanks Bear, that's pretty much what I'm seeing. 

 

This is my smoker, *(although I paid about half that price)

https://www.amazon.com/Masterbuilt-20072115-Bluetooth-Smart-Digital-Electric/dp/B00TJ1OZR0

 

When graphing the temps of the igrill against the masterbuilt.  I really think the masterbuilt is measuring the air temp + getting heat soak from the internal cabinet temperature.  I think that's part of the reason for the swings.  Basically it takes longer for the masterbuilt thermometer to register that it needs to kick on because it's absorbing heat from the internal walls.  When I get a chance I think I'm going to take apart the back thermometer and see if I can't insulate it a little better from the walls so I can get a better air temperature reading.  The other idea I had was to add a different ambient air thermo-probe that doesn't sit on the wall and connect that into the controller instead of the built in one.  

 

Fun fun.

post #5 of 5
Quote:
Originally Posted by nPoc View Post
 

Thanks Bear, that's pretty much what I'm seeing. 

 

This is my smoker, *(although I paid about half that price)

https://www.amazon.com/Masterbuilt-20072115-Bluetooth-Smart-Digital-Electric/dp/B00TJ1OZR0

 

When graphing the temps of the igrill against the masterbuilt.  I really think the masterbuilt is measuring the air temp + getting heat soak from the internal cabinet temperature.  I think that's part of the reason for the swings.  Basically it takes longer for the masterbuilt thermometer to register that it needs to kick on because it's absorbing heat from the internal walls.  When I get a chance I think I'm going to take apart the back thermometer and see if I can't insulate it a little better from the walls so I can get a better air temperature reading.  The other idea I had was to add a different ambient air thermo-probe that doesn't sit on the wall and connect that into the controller instead of the built in one.  

 

Fun fun.


All I do is use my Wireless Digital probes near the meat.

Then I adjust the MES control until the Maverick reads what I want.

Other than that I just ignore what the MES says---I only use it to know how much to adjust it.

 

Like if I want 230° smoking temp:

If my Maverick says 220°, and my MES says 230°, then I set the MES to 240°.

In a few minutes the Maverick will be at 230°.

 

And as for the small 10 to 15 degree cycles, I just pick the average & let it cycle all it wants.

 

Bear

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