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Thread: Measuring ESP

  1. #1
    Join Date
    Dec 2006
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    85

    Measuring ESP

    Following the thread "Getting the ESP" and watching the video by HVAC R US 2 I was wondering if anyone could recommend an inexpensive manometer for homeowner use. My curiosity has gotten the best of me.

    Thanks

  2. #2
    Join Date
    Apr 2008
    Location
    Princeton, NJ
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    581
    Quote Originally Posted by 7474 View Post
    Following the thread "Getting the ESP" and watching the video by HVAC R US 2 I was wondering if anyone could recommend an inexpensive manometer for homeowner use. My curiosity has gotten the best of me.

    Thanks
    I use the Dwyer magnehelic gauge. 0-1 wg range.
    To me it is more reliable for ESP measuring compared to the manometer I tried.

    Key1
    In the land of the blind.....the man with one eye is king....

  3. #3
    Join Date
    Jun 2004
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    4H: Hot, Humid Houston H.O.
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    3,304
    The classic analog tool would be a Dwyer Magnahelic with the appropriate pressure range. A couple years ago I priced them at $XX, certainly affordable. A pro would probably require several for different ranges if he had any at all.
    http://www.dwyer-inst.com/Products/P...eName=Ordering

    What I ended up buying was a Dwyer Model 25 manometer using red oil of a certain specific gravity. A few of them were 35 years old but unused, out of a laboratory in Mississippi and auctioned on Ebay. Advantage is a wider range of pressure than a Magnahelic, disadvantage the inherent messiness of red dyed oil if you let the thing tip over etc. I kinda like the best of old technology. For an example you could look up item # 360125713050 on Ebay, I find these appear regularly.

    Modern tools are digital manometers, very impressive but they cost a bit. Dwyer seems a central manufacturer here as well, though some other brands are said to be good.

    Hope this helps -- Pstu

  4. #4
    Join Date
    Apr 2008
    Location
    Princeton, NJ
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    My model number is 2001 in the link from pstu


    You can get it through amazon.com but that always cost more (to pay the middle man).

    Key1
    In the land of the blind.....the man with one eye is king....

  5. #5
    Join Date
    Dec 2006
    Posts
    85
    Thanks KEY1CC and PSTU, I appreciate the information.

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