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Thermometer pic: Condar & Tel Tru

Post in 'The Gear' started by Knots, Mar 16, 2013.

  1. Knots

    Knots Minister of Fire

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    Background: I'm currently renting a house that I'm heating (attempting to) with an old Portland Stove Foundry, Atlantic 224 while I build a house later this year. So, I was at the the stove shop looking at new stoves and I bought a Condar on an impulse. Being a geek, it bothered me that I did not know how accurate it was, so I shelled out for a Tel Tru.

    I now have $70.00 worth of instrumentation on a $100.00 stove. _g

    Anyway, I want some gauges on the Jotul 'cuz it will be my first new stove and I want an idea what's going on with it.

    So, here's a pic of the two side-by-side on the stove while some dead-fall pine brings it a little further up to temp than I want. Sorry for the fuzziness - it was the best I could do. The Condar is reading about 650 and the Tel Tru says 600.

    DSC01763.JPG

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  2. BobUrban

    BobUrban Minister of Fire

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    IMO a magnetic coil spring thermometer is an estimate and I use it as such. Regardless if it is inaccurate by 20-50 degrees it remain consistantly that way and gives me a fair point of reference to what is going on inside. For the anal, tel tru is high end stuff. I have one that I used on the competition BBQ pit I built. Cost so much I kept it when I sold the pit for 1500.00 clams. It was just too darn big for a single dude. My plan is to build another that is a bit smaller for personal use and more practical for small backyard parties. The tel tru will be mounted on the front!!
    Jack Fate and ScotO like this.
  3. Knots

    Knots Minister of Fire

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    Yeah - it looks like the Condar is plenty accurate enough. It bothered me that I didn't know - now I do.
  4. charly

    charly Guest

    Shoot those two spots with an IR gun,, I know on my Fieview, a few inches left or right on the hot spot , the temperature can drop off a bit.. The gauges might not be as far off as you think...
    jeff_t and Backwoods Savage like this.
  5. Jack Fate

    Jack Fate Feeling the Heat

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    I got a PLC and it also runs less than others (certified calabration)


    But hey thanks I never thought to use it on my weber kettle!

    Got 4 of them 2 got temps 2 don't

    Thanks & Cheers
  6. charly

    charly Guest

    Here's my Woodstock gauge and my PTC gauge,,, pretty darn close...
    FireView 001.JPG
    Backwoods Savage likes this.
  7. Knots

    Knots Minister of Fire

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    Sorry - I don't have an IR and I'm not spending any more on this! I'll try putting them closer.
  8. Backwoods Savage

    Backwoods Savage Minister of Fire

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    Aw go ahead Knots. You can get one for about $15 at Harbor Freight.
    Tuneighty and raybonz like this.
  9. BobUrban

    BobUrban Minister of Fire

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    Better yet Knotts - swap spots on the stove. Then you will be certain if the location is the difference.
  10. Knots

    Knots Minister of Fire

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    This place is gonna be a bad influence on my wallet...:eek:
    n6crv likes this.
  11. Knots

    Knots Minister of Fire

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    Yeah - that just occurred to me. I put them closer together earlier, but there's still about a 40 degree difference. Not bad for some ribbons of wire.
  12. Jack Fate

    Jack Fate Feeling the Heat

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    I did many times & found not a great diff max 50 degree or less

    do like the lazy hand on it ( for max readings)

    and I know you can fabracate a paper clip to do the same on those HF china meters or others


    I will buy an american option if possiable

    but I will admit sometimes we (usa) make some junk too ( damn bean counters )


    cheers all
    -
    6.3+
  13. charly

    charly Guest

    Bottom line,,, I wouldn't worry about a 50 degree difference unless you are adamant about running your stove at it's max temp on a continuous basis...
    Jack Fate likes this.
  14. Knots

    Knots Minister of Fire

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    Well, I swapped them this morning. Now the Condar is reading slightly low relative to the Tel Tru. I would guess the Condar is pretty accurate then (assuming the Tel Tru is...um...telling true).

    DSC01770.JPG
    charly likes this.
  15. BobUrban

    BobUrban Minister of Fire

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    My money is on the tel tru being very accurate. For my BBQ pit I take all my therms(tel tru and cheap probe types for the meat itself) and place them in boiling water for an accuracy test. Water boils at a known temp(212F - 99.98C) so it provides and easy method to check thermometer accuracy. Unfortunately I am not sure how to do that with a magnetic?? Maybe hold it in the water with a wire, paper clip or coat hanger if finding out the exactness of the therms accuracy is important to you. For me, accuracy is only important when I am trying to cook perfect brisket or pork shoulders :)
  16. Knots

    Knots Minister of Fire

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    I'm guessing that it's pretty accurate being fresh from the factory. Good enough for wood stove use.
  17. DexterDay

    DexterDay Guest

    I would put my money on the Tel-Tru also.

    More coils, protected from any wind or blower interference, on the bottom. And used by many BBQ's world wide.

    Condars are a good instrument also. I have bought 5 different stove top thermos. The Tel-Tru has tested to be the most accurate. When compared with 2 different IR guns.
  18. KodiakII

    KodiakII Feeling the Heat

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    What model of tel tru is that, and where did you get it?
  19. DexterDay

    DexterDay Guest

    I got mine direct from Tel-Tru. I.got the extra needle to tell me what my hottest temp was. They are pricey, but they work well.

    Select the 50°/750° and I.got a Single min/max needle added, its $65.07 w/o shipping.

    http://www.teltru.com/p-496-dual-magnet-thermometer-dm.aspx
  20. Knots

    Knots Minister of Fire

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    I got it the same place Dexter did. You have to select the higher temperature model from the drop-down menu.
  21. KodiakII

    KodiakII Feeling the Heat

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    I'll have to find a Canadian dealer, it appears they don't ship directly to Canada.
  22. Knots

    Knots Minister of Fire

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    Must be a national security thing. Critical thermometer technology. ;lol
  23. KodiakII

    KodiakII Feeling the Heat

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    Like the synthetic stock that is on the restricted list! :mad:
  24. Knots

    Knots Minister of Fire

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    Accurate magnetic thermometers (key component for making WMB - Weapons of Mass BBQ). Synthetic stocks. We can not let the Canadians get this!

    Think of what would happen! Yummy beef and people hunting in the rain right on our northern border! It just won't do!

    What's next? Bagged milk coming south?!?
    KodiakII likes this.

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