Reasonably inexpensive stack thermometer

ddahlgren Posted By ddahlgren, Jan 16, 2013 at 1:39 PM

  1. ddahlgren

    ddahlgren
    Minister of Fire 2.
    NULL
    

    Apr 18, 2011
    542
    106
    Loc:
    SE CT
    i need a stack thermometer and want a probe type. I know it has been asked before but maybe there are better solutions since the last answer. I used to have a high end one from way back when I was an oil heating tech, still have my state license for that matter. i can not find it after looking for hours. I moved my shop about seven years ago and do remember moving the tune up kit tool box that it was in. I doubt I would have thrown it out but oh well. I have little faith in the stick on magnetic or IR heat gun either as that is skin temp not stack temp. I want to keep the stack gases at the right temp not the outside of the pipe unless that is more important to help prevent creosote. Any guidance appreciated. If there is a good magnetic one it would be simpler as nothing to do but look at it. The local tractor supply has magnetic ones Rutland I think are they any good if skin temp the most important.
    Dave
     
  2. Huntindog1

    Huntindog1
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    Dec 6, 2011
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  3. pen

    pen
    There are some who call me...mod. 2.
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    Staff Member

    Aug 2, 2007
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    Are you using single or double wall stove pipe?

    pen
     
  4. ddahlgren

    ddahlgren
    Minister of Fire 2.
    NULL
    

    Apr 18, 2011
    542
    106
    Loc:
    SE CT
  5. 3fordasho

    3fordasho
    Minister of Fire 2.
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    Jul 20, 2007
    593
    73
    Loc:
    South Central Minnesota
    I like using this one:
    http://www.teltru.com/p-272-big-green-egg-primo-grill-dome-kamado-replacement-thermometer-lt225r-5-inch-stem-2001000-degrees-f.aspx

    Accurate and fast response.



     
  6. jharkin

    jharkin
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    Oct 21, 2009
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    Joful put something together with a k probe and a reader sourced from amazon, you could pm him. Or the Condar analog probe.
     
  7. firefighterjake

    firefighterjake
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    Jul 22, 2008
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    For double walled pipe I have been pretty happy with my Condar probe thermometer.
     
  8. bag of hammers

    bag of hammers
    Minister of Fire 2.
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    Jan 7, 2010
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    Osburn (SBI) magnetic flue probe in double wall pipe, purchased from stove dealer for @ $15 if I recall. Works well until the guy on the roof hammers it with a chimney brush...;em
     
  9. 3fordasho

    3fordasho
    Minister of Fire 2.
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    Jul 20, 2007
    593
    73
    Loc:
    South Central Minnesota

    I had one installed in a telescoping (adjustable) section of double wall connector pipe and it read very low and was slow to respond. So these must only work in a true double wall section of pipe... Just an FYI...
     
  10. bag of hammers

    bag of hammers
    Minister of Fire 2.
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    Jan 7, 2010
    1,441
    446
    Loc:
    Northern ON
    interesting - I have mine (not a Condar) in a telescoping pipe and it seems ok - maybe the brand? or because it doesn't go through the "overlapping" part of the pipe? I dunno....
     
  11. 3fordasho

    3fordasho
    Minister of Fire 2.
    NULL
    

    Jul 20, 2007
    593
    73
    Loc:
    South Central Minnesota

    Mine went through the overlapping section of pipe - so 4 layers. This explains the low reading and slow response. Just an FYI that this type of probe thermometer is very sensitive to 1 vs 2 vs 4 layers. I'd rather have the sensing part of the probe inside the pipe. The Condor probe is just a piece of solid metal that conducts heat out to the coil located outside the pipe. The coil is also affected by radiant heat off the outside of the pipe. The Tel-Tru that I use has the coil inside the probe inside the pipe and works well until you exceed the 1000F limit. I did that once but was able to re-calibrate it and put it back in use.
     

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