Results 1 to 6 of 6
  1. #1
    Join Date
    Feb 2007
    Location
    Central NJ
    Posts
    505

    Pitot tubes for velocity

    Anybody out there in the world take velocity measurements anymore? is there a recommended pitot tube diameter rated for certain size ducts or does any of that stuff matter

  2. #2
    Join Date
    May 2000
    Location
    Stafford, Va. USA
    Posts
    213
    Quote Originally Posted by n-e-w Jerz! View Post
    Anybody out there in the world take velocity measurements anymore? is there a recommended pitot tube diameter rated for certain size ducts or does any of that stuff matter
    Hi New Jerz,
    I and a lot of other guys do use a pitot tubes to measure the air velocity pressure to determine air flow.
    The pitot tubes are the same diameter. The diameter may vary from manufacturer to manufacturer. seen one that was 72 inches long but the same diameter as an 18 inch tube.
    Allen

  3. #3
    Join Date
    Feb 2007
    Location
    Central NJ
    Posts
    505
    thanks allen. seems like your the only one out there who would take the time to use this lost art of taking measurements! guess i only have to purchase one pitot tube instead of many.

  4. #4
    Join Date
    May 2000
    Location
    Stafford, Va. USA
    Posts
    213
    HI New Jerz,
    I use the pitot tubes inconjunction with a Shortridge Air Data Meter. The Shortridge can be set to be used with the pitot tube, instead of displaying a difference in pressure (which it will do) it will display velocity in feet per minute. It actually will average the stored velocity readings.
    We do have the inclined manometers, but don't use them because of the Shortridge.
    Allen

  5. #5
    Join Date
    Jun 2001
    Location
    Louisville, KY
    Posts
    12,189
    Several know how to do it.

    Many have found that mini vanes are more repeatable and more accurate because of the larger opening.
    Perhaps you should have read the instructions before calling.

  6. #6
    Join Date
    Feb 2007
    Location
    Central NJ
    Posts
    505
    i'll be using a magnehilic gauge or a testo digital manometer. was surprised at how much a inclined manometer cost. really don't want to buy anymore tools right now (even though i will end up buying something anyhow)...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event