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  1. #1
    Join Date
    Jun 2004
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    Location:Raleigh NC
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    Hotwire vs Mini Vane anemometers

    Like to hear thoughts on the Hotwire anemometers. I thinking it would be nice to get one or a mini vane.

    What do you guys have and which do you prefer, and why


    I Have a vane but I would like to get into the ductwork.

    I also have the Dywer Manometer with airflow kit.


    The Hotwire looks tempting.
    If you help others then you are a Success

  2. #2
    Join Date
    Nov 2008
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    1,673
    Hot wires. . .
    ". . .Acording to Kings Law the wind speed is
    proportional to square of the power required to keep constant
    temperature."
    I'd think a spinning prop is more accurate because of less complexity between the transducer and the readout, and it doesn't need a reference thermistor to correct for air temp.

  3. #3
    Join Date
    Aug 2003
    Location
    Central Kentucky
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    6,248
    Used a hot-wire for years and love it.
    You just have to keep in mind what conditions it's calibrated for.

    Would love to field test the mini-vane but until they add temperature to it I probably won't drop the cash on one.
    Have you set up a Google alert for Carbon Monoxide yet?
    Click here to find out how.

  4. #4
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    Quote Originally Posted by davidr View Post
    Used a hot-wire for years and love it.
    You just have to keep in mind what conditions it's calibrated for.

    Would love to field test the mini-vane but until they add temperature to it I probably won't drop the cash on one.

    I'm assuming you mean it needs to be calibrated for duct or stack temp??
    If you help others then you are a Success

  5. #5
    Join Date
    Aug 2003
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    Central Kentucky
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    Quote Originally Posted by fcs View Post
    I'm assuming you mean it needs to be calibrated for duct or stack temp??

    Yes, it's calibrated for 70 air temperature.

    I know on the Velocicalc Plus you can adjust to actual air conditions versus standard air conditions.
    Have you set up a Google alert for Carbon Monoxide yet?
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  6. #6
    Join Date
    Nov 2008
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    Quote Originally Posted by davidr View Post
    until they add temperature to it I probably won't drop the cash on one.
    http://www.dwyer-inst.com/PDF_files/PATH_cat.pdf
    but finding the price on the Web is not so easy.

  7. #7
    Join Date
    Aug 2003
    Location
    Central Kentucky
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    Quote Originally Posted by WhoIsThat? View Post
    http://www.dwyer-inst.com/PDF_files/PATH_cat.pdf
    but finding the price on the Web is not so easy.

    Sorry I wasn't clear, I was talking about the minivane.

    The TSI I use does temperature and velocity together.
    It's a nice feature to have.
    Have you set up a Google alert for Carbon Monoxide yet?
    Click here to find out how.

  8. #8
    Join Date
    Jun 2004
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    Location:Raleigh NC
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    My TIF Vane does Temp, RH, BTU Cal, FPM,CFM .

    I love it but it's slow to get reading and way to big to stick in ducting.
    If you help others then you are a Success

  9. #9
    Join Date
    Aug 2007
    Location
    WI
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    1,110
    I just picked up a Testo 416 mini vane. I have only used it once, but it seems pretty cool so far. Temperature is not a problem since I have plenty of thermometers for that. Besides, IMHO, my Testo humidity stick is faster than DavidR's Velocicalc anyway, LOL.

  10. #10
    Join Date
    Jan 2005
    Location
    Akron
    Posts
    1,144
    For highly accurate quick measurement, the rotating vane anemometer is the best way to measure airflow. Vane anemometers have several advantages over any other method. The primary advantages are speed, accuracy, and ease of use. Vane anemometers do not require air density compensation due to air temperature, humidity, or atmospheric pressure. The mini vane allows for a full duct traverse with an automatic calculation of the CFM in the duct if the dimensions are input into the instrument before the measurement is taken. It is imperative that the ducting attached to the appliance, and the base pan, if side returned is used, is sealed. Air leaks up-stream of where the measurements are made will significantly alter the actual reading obtained with this method. If done carefully the measurement error will be less than 3%. Changes in yaw and pitch of the probe head in the duct as much as 10% will result less than 1% error in the measurement making the mini-vane an ideal probe for field air measurement.
    JLB,

  11. #11
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    Thanks Jim,

    Which Mini-vane do you use?
    If you help others then you are a Success

  12. #12
    Join Date
    Aug 2007
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    WI
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    Quote Originally Posted by fcs View Post
    Thanks Jim,

    Which Mini-vane do you use?
    I have a hunch he uses Testo's.

  13. #13
    Join Date
    Jun 2004
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    Location:Raleigh NC
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    Quote Originally Posted by DesMech View Post
    I have a hunch he uses Testo's.
    Good point and would he admitted to using another brand
    If you help others then you are a Success

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