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  1. #1
    Join Date
    Feb 2007
    Location
    Sydney
    Posts
    11

    Default How much Argon left in cylinder?

    I have a bottle of Supagas Argon52 (E size I think) but I dont have a guage to tell me how much is left. Is there a way of telling without buying a guage?

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  3. #2
    Join Date
    Jun 2007
    Location
    North Of The Boarder
    Age
    68
    Posts
    16,794

    Default

    weigh it

  4. #3
    Join Date
    Aug 2006
    Location
    Muswellbrook NSW
    Posts
    375

    Default

    Borrow a gauge

  5. #4
    Join Date
    Jun 2004
    Location
    Grafton, N.S.W.
    Age
    63
    Posts
    1,330

    Default

    Quote Originally Posted by Stringy View Post
    Borrow a gauge
    Ditto
    Hooroo.
    Regards, Trevor
    Grafton

  6. #5
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    58
    Posts
    12,779

    Default

    Not sure if this works for Argon, but with LPG you can pour hot water on the side of the bottle and then feel the bottle with your hand. Where it changes from warm to cold is where the level is.
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  7. #6
    Join Date
    Jun 2004
    Location
    Mount Colah, Sydney
    Age
    72
    Posts
    923

    Default

    Hi Darren

    No won't work with argon. LPG condenses into a liquid under pressure, (hence Liquefied pet gas), and you then can feel the interface between the liquid and the headspace. Argon remains a gas at pressures well in excess to cylinder pressures, so no interface. Likewise the old "shake test" won't work for the same reason.

    Only answer is get a pressure guage, or wait for it to run out. Weighing it could help, if you have an accurate and sensitive scale, but you would have to know what the exact weight was when it was full, (or empty) to tell. While compressed gas does have weight, it isn't very much.

    regards
    Alastair

  8. #7
    Join Date
    Aug 2003
    Location
    Pambula
    Age
    58
    Posts
    12,779

    Default

    Yeah it was a long shot. I only thought of it because the latest gas bill is on my desk and there's instructions as per above on the back!

    It's now over $100 for a 45kg bottle
    "I don't practice what I preach because I'm not the kind of person I'm preaching to."

  9. #8
    Join Date
    Dec 2005
    Location
    Gold Coast
    Age
    66
    Posts
    1,083

    Default

    You can get a fair idea from picking up the cylinder. They feel empty when they're low, and it takes a little while for the gas to run out when you're welding. You find yourself turning up the pressure to get the right flow.

  10. #9
    Join Date
    Jan 2004
    Location
    Mackay Qld
    Posts
    3,466

    Default How much gas?

    Hi Matt

    Full or nearly empty the cylinder is of little use to you unless you you have a cylinder gauge.

    The gauge apart from the the obvious function of indicating cylinder pressure also reduces cylinder pressure from 20.000 KPa to a lower usable pressure by the flow meter.

    Testing the weight by lifting and guessing the weight may be alright if you do this all the time.It sounds like the cylinder is new to you so you may not know what full weight feels like.I use my cylinders intermittently and even I don't think I can judge what is empty

    You can pay up to a $100 or so for a decent cylinder gauge depending on quality.

    Grahame

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