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  1. #1
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    232
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    Need a recommendation for a highly accurate scale

    Hey guys, I've been using CPS and fieldpiece scales for a while now, and 1/4oz accuracy was always good enough until now. I've been working on these Stirling Ultracold units that have small R170 (ethane) refrigerant charges in them, and I need better accuracy.

    The one I'm working on now has a charge of 30-33 grams. Working with a scale that only registers .25 oz at a time is getting tedious. Anyone got a recommendation for a scale that will give me precision down to 1 gram but is also able to handle the weight of a 40lb ethane cylinder?

  2. #2
    Join Date
    Jul 2018
    Location
    Wisconsin
    Posts
    336
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    Dial-a-charge

    Sent from my SM-G920R4 using Tapatalk

  3. #3
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    232
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    Thread Starter
    540 psig bottle pressure...

  4. #4
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    17,750
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    Frost line and back it off!

  5. #5
    Join Date
    Jan 2016
    Location
    The triangle in the Keystone
    Posts
    985
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    I think my TIF9010A reads in 2 gram increments.

  6. #6
    Join Date
    Jul 2018
    Location
    Wisconsin
    Posts
    336
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    From the scales I see on Trutechs website it looks 2grams may be the best resolution for this type of scale.

    Sent from my SM-G920R4 using Tapatalk

  7. #7
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    232
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    Thread Starter
    Awesome, thanks guys. I'll see if I can talk the manager at my shop into picking up one of those.

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