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Thread: Testing CO2 levels with Zahm Meter

  1. #1
    Join Date
    Jan 2018
    Location
    Cumberland Md
    Posts
    1

    Testing CO2 levels with Zahm Meter

    Hello everyone. I am currently using 2bbl unitanks. When drawing sample's for carb level checks, should I leave head pressure on the beer or relieve it before drawing the sample?

  2. #2
    Join Date
    Aug 2017
    Location
    Calmar Iowa U.S.A.
    Posts
    41
    yes. leave head pressure on the tank. go to the zahm website, they have detailed videos about how to use their testing equipment.

  3. #3
    Join Date
    Sep 2013
    Location
    Massachusetts
    Posts
    232
    Once you've carbed, you should never relieve head pressure. The zahm is filled via counter pressure, so yes you need the head pressure and you need the zahm to be pressurized. It's no different than filling a keg.

  4. #4
    Join Date
    Sep 2005
    Location
    Louisville, KY
    Posts
    953
    It is tough to get really accurate readings on a tank that small. Make sure you prechill your Zahm, the less liquid you take out of the tank the less you drop head pressure. Cheers
    Joel Halbleib
    COO / Zymurgist
    Goodwood Brewing Co
    636 East Main St
    Louisville, KY
    goodwood.beer

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