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Accurate replacement thermometer...

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  • SierraBBQGuy
    Former Member
    • Jan 2018
    • 173
    • Shingle Springs CA

    Accurate replacement thermometer...

    I have 4 grills with the standard radial Bi metal thermometer in the lid. We know these are not accurate, so most of us use some type of remote thermometer, cabled to a probe inserted inside the grill. Why does no one make a good digital thermocouple thermometer, to mount on the lid of our grill/smoker. I realize the proper place to measure temps is at the grate, but for a smoker, like a Kamado, measuring at the lid isn’t too far off and would be far more convenient. I’ve searched for something like this, with no luck. I would think this would be a good product!
  • jfmorris
    Club Member
    • Nov 2017
    • 2530
    • Huntsville, Alabama
    • Jim Morris

      Cookers
      • Weber Genesis II E-410 w/ GrillGrates (2019)
      • Weber Performer Deluxe 22.5" w/ GrillGrates & Slow 'N Sear & Drip ‘N Griddle & Party Q (2007)
      • Custom Built Offset Smoker (304SS, 22"x34" grate, circa 1985)
      • King Kooker 94/90TKD 105K/60K dual burner patio stove
      • Lodge L8D03 5 quart dutch oven
      • Lodge L10SK3 12" skillet
      • Anova
      Thermometers
      • Thermoworks Smoke w/ Wifi Gateway
      • Thermoworks Dot
      • Thermoworks Thermapen Classic
      • Thermoworks RT600C
      Beverages
      • Whatever I brewed and have on tap!

    #2
    I would have to guess you don't see digitals for the dome/lid of your grill because the electronics would overheat mounted there. I'm an electrical engineer, and the maximum temperature for most IC's (chips) I use in designs is 125C (257F). After that they shutdown or get damaged. A dome thermometer with the electronics sitting on that hot metal (or ceramic) lid would exceed these temperatures if you did anything beyond cold smoking. Don't get me started on battery technology - batteries don't handle high temperatures as well as the electronics. Think "exploding Samsung phone"...

    There are better grade analog thermometers - the smoker I've been using for 30 years for example has an old 3" dial thermometer threaded into a nipple in the lid that pretty much tracks exactly with my digital probes. It's an old Rochester, and my dad who built the smoker has a couple of spares still in the boxes, but I've yet to need to replace the one I've been using for 30 years.

    I guess it could be one of these, or a predecessor to it:

    http://www.rochestergauges.com/pages/thermometers.html

    Pretty much all of those are rated as accurate to 1% of the scale range, so the 0-500F model for example would be accurate to within 5 degrees. Not bad for analog. And they can be ordered with a recalibration feature where you can in fact calibrate it if you want.

    Quality bimetal thermometers are possible, but not cheap, as these type cost $30 or so at least. That's too expensive and cuts into the profit margin of the grill manufacturer, so they use a piece of crap bimetal instead.
    Last edited by jfmorris; July 21st, 2018, 09:11 AM.

    Comment


    • SierraBBQGuy
      SierraBBQGuy commented
      Editing a comment
      Yeah, I am also an electrical engineer, I thought of this. I think its possible to design something with the electronics and battery not sitting right against the metal (or ceramic) and isolated , but its probably not cost effective, especially with these higher temp components.
  • EdF
    EdF
    Club Member
    • Jul 2016
    • 3171
    • Atlantic Highlands, NJ
    • Uuni Pro (new kid in town)
      Karubeque C-60
      Large BGE since 2002 + plate setter + pizza stone + upper grid + stainless paella pan for drippings (the best!)
      TEC Cherokee FR since 2014 (portable infrared grill - does a mighty sear)
      Polyscience Sous Vide Pro since 2012 (wasn't much else available in those days)
      Thermapen
      Thermapen Air
      ThermaQ (or its predecessor)
      Thermoworks Hi temp IR
      BBQ Dragon & Chimney of Insanity
      Various other stuff

    #3
    I used just the dome thermometer for a long time on the LBGE. I had replaced the original one with a Tel-Tru (which can be calibrated and has pretty good precision). But when I finally did get a digital one from Thermoworks, I found differences up to 50F between grid level and the dome thermometer.

    Comment


    • jfmorris
      jfmorris commented
      Editing a comment
      Yes this is in fact the issue with all dome thermometers - the fact they are not at grate level. I’ve seen the dome and grate temps equalize in reallly long cooks but usually see up to 50 degreees diff as well.
  • LA Pork Butt
    Charter Member
    • Dec 2014
    • 4883
    • Grew up in New Orleans, lived in Texas for 20 years, lived in Mandeville, LA for 22 years. I now liv

    #4
    My BGE gauges has been fairly accurate, but I replaced it with a SmokeWare which is larger and reads about 25 degrees hotter than the grill when running low and slow. So, when it reads 250 the grill is running 225. Any small variance is negligible when cooking at those low temperatures from 6 to 14 hours.

    Comment


    • SierraBBQGuy
      SierraBBQGuy commented
      Editing a comment
      Agreed, I see these differences as well, but like you say, at low and slow temps, I think its not important. They also seem to converge more after a long time, like hours.
  • Polarbear777
    Club Member
    • Sep 2016
    • 1529

    #5
    Click image for larger version

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ID:	535615The grate mounted tel tru is usually within 10F of my probes. The dome thermo is largely useless.

    Comment

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    Meat-Up in Memphis 2021

    Join us in Memphis for our Meat-Up! Space is limited to 400, secure your spot by booking early!
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    Surely you know somebody who loves outdoor cooking who deserves a gift for the holidays, birthday, anniversary, or just for being wonderful. There he is, right in the mirror! Here are our selections of best ideas, all Platinum or Gold Medalists, listed by price.

    Click here to see our list of Gold Medal Gifts


    Digital Thermometers Are Your Most Valuable Tool And Here's A Great Buy!

    maverick PT55 thermometer

    A good digital thermometer keeps you from serving dry overcooked food or dangerously undercooked food. They are much faster and much more accurate than dial thermometers. YOU NEED ONE!

    Click here for more info on the Maverick PT-55 Waterproof Instant-Read Thermometer Review shown above. It may be the best value in a thermometer out there


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    slow n sear

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    Click here for our article on this breakthrough tool


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    the good one grill

    The Broil King Signet 320 is a modestly priced, 3-burner gas grill that packs a lot of value and power under the hood. Broil King's proprietary, dual-tube burners get hot fast and are able to achieve high, searing temps that rival most comparatively priced gas grills. The quality cast aluminum housing carries a Limited Lifetime Warranty.

    Click here to read our complete review


    The Good-One Is A Superb Grill And A Superb Smoker All In One

    the good one grill

    The Good-One Open Range is a charcoal grill with an offset smoke chamber attached. It is dramatically different from a traditional offset smoker. The grill sits low in front and doubles as a firebox for the smoke chamber which is spliced on above and behind so it can work like a horizontal offset smoker only better. By placing the heat source behind and under the smokebox instead of off to the side, Open Range produces even temperature from left to right, something almost impossible to achieve with a standard barrel shaped offset.

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    Pit Barrel Cooker Smoker

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    Click here to read our detailed review and to order


    Pit Barrel Cooker Smoker

    The Pit Barrel Cooker May Be Too Easy

    The PBC has a rabid cult following for good reason. It is absolutely positively without a doubt the best bargain on a smoker in the world. Period. This baby will cook circles around the cheap offset sideways barrel smokers in the hardware stores because temperature control is so much easier. Best of all, it is only $299 delivered to your door!

    Click here to read our detailed review and the raves from people who own them


    The Undisputed Champion!

    thermapen

    The Thermoworks Thermapen MK4 is considered by the pros, and our team, to be the single best instant read thermometer. Don't accept cheap substitutes.  Click here to read our test results and comprehensive review and why it won our Platinum Medal .


    Compact Powerful Sear Machine For Your Next Tailgater

    Placeholder

    Char-Broil's Grill2Go x200 is a super-portable, fun little sizzler made of heavy, rust-proof cast aluminum. The lid snaps shut. Grab the handle and you're off to the party! Char-Broil's TRU-Infrared design produces searing heat while reducing fuel consumption. A 16 ounce LP gas canister is enough to keep you flipping burgers for hours.

    Click here to read our detailed review and to order


    The Cool Kettle With The Hinged Hood We Always Wanted

    NK-22-Ck Grill

    Their NK22CK-C Charcoal Kettle Grill puts a few spins on the familiar kettle design. In fact, the hinged lid with a handle on the front, spins in a rotary motion 180 degrees. It's hard to beat a Weber kettle, but Napoleon holds its own and adds some unique features to make the NK22CK-C a viable alternative.

    Click here for more about what makes this grill special


    Placeholder

    G&F Suede Welder's Gloves

    Heat Resistant Gloves With Extra Long Sleeves Hold The Hot Stuff

    If you're using oven mitts at the grill, it's time to trade up. Say hello to these suede welder's gloves. They're heat resistant enough to handle hot grill grates, and flexible enough to handle tongs. The extra long sleeves even let you reach deep into the firebox to move hot logs without getting burned. Our Fave.

    Click here to read our detailed review

    Click here to order from Amazon


    GrillGrates Take Gas Grills To The Infrared Zone

    grill grates

    GrillGrates(TM) amplify heat, prevent flareups, make flipping foods easier, keep small foods from committing suicide, kill hotspots, are easier to clean, flip over to make a fine griddle, and can be easily removed and moved from one grill to another. You can even throw wood chips, pellets, or sawdust between the rails and deliver a quick burst of smoke to whatever is above. Every gas grill needs them.

    Click here for more about what makes these grates so special


    PK 360 grill

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    Click here to read our detailed review of the PK 360

    Click here to order it direct from PK and get a special deal for AmazingRibs.com readers only


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    masterbuilt gas smoker

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    masterbuilt gas smoker

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    Fireboard: The Ultimate Top Of The Line BBQ Thermometer

    fireboard bbq thermometer

    With the ability to monitor up to six temperatures simultaneously with either Bluetooth or Wifi on your mobile phone, tablet, or computer, Fireboard is the best digital thermometer we’ve tested.

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