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Thread: 0-50 thermometer

  1. #1
    Join Date
    Apr 2019
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    northwest CT
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    Default 0-50 thermometer

    so this season will be my first time running a 0-50 thermometer on my pan, prior to this i used a digital hung inside the pan, my question is how to i calibrate the themometer daily to my boiling point ?? , with the digital i just boiled water in the house and added however many degrees i needed and started taking hydrometer readings when i reached that temp...i,m sure theres a simple way to do this but i,m drawing a blank at the moment

  2. #2
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    Wellsboro Pa
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    There is a adjustment screw on them. Just hold stem in a good boiling water and put pointer on 0. I think the tip should be in at least 3" of boiling water.

  3. #3
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    northwest CT
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    Quote Originally Posted by upsmapleman View Post
    There is a adjustment screw on them. Just hold stem in a good boiling water and put pointer on 0. I think the tip should be in at least 3" of boiling water.
    ok i understand that part but how do i calibrate it once its in the pan and the pan has sap/syrup in it from the previous days boil ?, or does it not need to be recalibrated every day ?

  4. #4
    Join Date
    Nov 2013
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    N.E.Ohio
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    Quote Originally Posted by CTguy923 View Post
    ok i understand that part but how do i calibrate it once its in the pan and the pan has sap/syrup in it from the previous days boil ?, or does it not need to be recalibrated every day ?
    Personally I use temperature only as a ballpark number. We always check density with a hydrometer. When the density is at the red line on the hot test, just remember your temperature for that draw off and keep it consistent for that boil. It will change daily. Temperature alone is not a sure answer, a good calibrated hydrometer will be your best friend. Oh, and buy 2, the first one so you can drop an break and the second to use lol
    Seldom Seen Farm
    Montville Ohio.
    Seldomseenmaple.com

  5. #5
    Join Date
    Jan 2013
    Location
    Bridgewater NH
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    I start boiling and once the syrup gets close to the 7 on my thermometer I start checking with hydrometer. Once it reaches the red line I’ll adjust the dial so it’s at 7. I also periodically check syrup with hydrometer throughout the day and adjust dial thermometer as needed.
    Mike

    12 x 16 Sugar house
    18”x72” CDL drop flue
    Homemade 4 post RO
    125 taps on vacuum (Guzzler)
    Smoky Lake 7” filter press

  6. #6
    Join Date
    Apr 2019
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    northwest CT
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    Quote Originally Posted by Drew Pond Maple View Post
    I start boiling and once the syrup gets close to the 7 on my thermometer I start checking with hydrometer. Once it reaches the red line I’ll adjust the dial so it’s at 7. I also periodically check syrup with hydrometer throughout the day and adjust dial thermometer as needed.
    thank you !

  7. #7
    Join Date
    Jun 2011
    Location
    Northern Michigan
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    It is not necessary to change your thermometer daily. When you set it to zero in boiling water, note the barometric pressure is at that time. There is a scale that is available that tells you what temperature change is necessary for each tenth of inch of barometric pressure change, positive or negative. Each day, check the current pressure and adjust accordingly.
    Gary
    16' X 24' Sugarhouse
    2' X 6' Leader Inferno Arch with Revolution Raised-Flue Pans, Smoky Lake preheater and hood
    Deer Run Maple gas-powered 250 RO
    WesFab 7" filter press
    Kubota 1100 RTV with tracks and 125 gallon tank for transporting sap
    800 taps on gravity and vacuum
    Very supportive wife who is the best coworker
    http://mapletrader.com/community/sho...ing-Sugarhouse

  8. #8
    Join Date
    Jan 2013
    Location
    Bridgewater NH
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    Quote Originally Posted by MISugarDaddy View Post
    It is not necessary to change your thermometer daily. When you set it to zero in boiling water, note the barometric pressure is at that time. There is a scale that is available that tells you what temperature change is necessary for each tenth of inch of barometric pressure change, positive or negative. Each day, check the current pressure and adjust accordingly.
    Gary
    How do you check barometric pressure? Handheld barometer or local weather station? I don’t usually have to adjust temperature on my normal days of boiling but sometimes I’ll store sap and have a long 8-10 hour day of boiling
    Mike

    12 x 16 Sugar house
    18”x72” CDL drop flue
    Homemade 4 post RO
    125 taps on vacuum (Guzzler)
    Smoky Lake 7” filter press

  9. #9
    Join Date
    Jun 2011
    Location
    Northern Michigan
    Posts
    490

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    Mike,
    I have a Davis Vantage Vue weather station with two indoor consoles for it. During syrup season I put one of the consoles in the sugarhouse to allow me to monitor the current weather. The barometric pressure reading it supplies is very accurate. I do check it during a long boil because the pressure does change if a weather system is moving into or out of the area.

    Gary
    16' X 24' Sugarhouse
    2' X 6' Leader Inferno Arch with Revolution Raised-Flue Pans, Smoky Lake preheater and hood
    Deer Run Maple gas-powered 250 RO
    WesFab 7" filter press
    Kubota 1100 RTV with tracks and 125 gallon tank for transporting sap
    800 taps on gravity and vacuum
    Very supportive wife who is the best coworker
    http://mapletrader.com/community/sho...ing-Sugarhouse

  10. #10
    Join Date
    Jul 2021
    Location
    Parry Sound Area, Ontario
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    1,011

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    Quote Originally Posted by Drew Pond Maple View Post
    How do you check barometric pressure? Handheld barometer or local weather station? I don’t usually have to adjust temperature on my normal days of boiling but sometimes I’ll store sap and have a long 8-10 hour day of boiling
    I use SapTapApp and that gives you what the boiling point of sap and water for your location and it takes into account the local barometric pressure at that time. Using that and setting your thermometer to that, you can add or subtract the difference from any future temperatures.

    C7CAC6C8-2ABD-4775-B8D7-0EE25697C084.jpg

    It will also be my first year using it and I do plan on checking the density, but with my refractometer. I hope to dial in the temperature with the density and start the draw off a little heavy.
    Last edited by Swingpure; 01-24-2023 at 06:23 PM.
    2022 - 5 pan block arch - 109 taps, 73 on 3/16 lines, 36 on drops into 5 gallon pails.
    930 gallons boiled, 109 L (28.8 gals) of delicious syrup made.
    DYI RO and DYI Vacuum Filter
    Planned 178 taps, 172 on lines and 6 on drops to pails, for 2023 with a 2x4 divided pan and base stack, 8” pipe, on a block arch.

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