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Thread: Polycold Cryotiger -203c on ebay for under $200

  1. #1
    Xtreme Owner Charles Wirth's Avatar
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    Polycold Cryotiger -203c on ebay for under $200

    A small Cryo compressor, a good started project for someone who wants to venture down this path. Low wattage, low price but should be fine to learn.

    Or... Suck the gas out and use in a cascade. Several on ebay at this price. Polycold gas blend as awesome and very expensive.

    http://www.ebay.com/itm/IGC-Polycold...item1e956a6c14

    PDF:

    http://instrumentation.obs.carnegies...G_Brochure.pdf
    Last edited by Charles Wirth; 11-21-2014 at 12:16 PM.
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  2. #2
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    Sadly these aren't the mythical unicorns they look like. The box is just a compressor condenser oil separator. The hoses and cold head provide all the heat exchange and capillary lines. And while the gas charge is present, the cost doesn't support it... sadly I know this because I have one on the shelf.

    On the other hand. If someone grabs this I will help you find a cold end and hoses if possible, or would be happy to help build one.


    If you have a cooling question or concern feel free to contact me.

  3. #3
    Xtreme Owner Charles Wirth's Avatar
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    I am a bit more adventurous, I would suck the gas out as the cheapest polycold charge will set you back $700

    I have a larger CTI with helium compressor.
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  4. #4
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    The charges are certainly expensive!
    I think we can make that mix for far less though. And even less still if we look through Mytek work with hydrocarbons.


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  5. #5
    Xtreme Owner Charles Wirth's Avatar
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    You and I can do our own blends for much cheaper, this was a less expensive option for parts and gas.

    It is a full condensing unit with brazed plate heat exchanger built into an autocascade single compressor with custom gas mix.

    I think Cryotiger is PT50 ~ $650 per charge
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  6. #6
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    So basically one could build a line set for this and have a charged autocascade? Assuming it is fully charged.

  7. #7
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    You'd need a specialized vacuum sealed evaporator system. And you'd get a -200C at 10watts.


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