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  1. #1
    Join Date
    Jul 2009
    Location
    Ontario, Canada
    Posts
    913

    Digital Psychrometer Recommendation

    Hey guys!

    Well, its that time of year where I start getting myself prepared for the upcoming cooling season.

    I've been thinking of getting a digital psychrometer for quick readings. I've been using a bacharach sling for some time now.

    Just starting some research on the digital units and so far the fieldpiece SRH3 looks pretty good. I'm looking for one that is reliable, and most importantly, very accurate.

    Any advise on that specific device and all other recommendations welcome as well!

  2. #2
    Join Date
    Oct 2008
    Location
    Nashville ,TN
    Posts
    275
    I got the blue Cooper box, only suggestion from me would be get one that can be inserted Into the ductwork by drilling small hole . Good luck.

  3. #3
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381
    i have that cooper .. have had quite a few humidity probe failures & only use it now & again .... last one covered under a warranty from a replacement purchase . . . lets see how this one holds up ....

  4. #4
    Join Date
    Oct 2008
    Location
    Nashville ,TN
    Posts
    275
    Hope mine doesn't crap out , first box I had though the humidity probe was bad 4 years ago. Can't remember don't those have like a five year warranty.

  5. #5
    Join Date
    May 2004
    Posts
    1,835
    I have the testo 605-H2. So far I like it. Simple to use.

  6. #6
    Join Date
    Jul 2011
    Location
    Mt airy N.C.
    Posts
    44
    i have the fieldpiece, i have had realy good luck with it and the measurements match up with the fieldpiece check me theat i have, so i guess its pretty accurate.

  7. #7
    Join Date
    Jun 2008
    Location
    Rochester, NY
    Posts
    334
    Quote Originally Posted by 270wsm View Post
    I have the testo 605-H2. So far I like it. Simple to use.
    I have 2 of the 605-H2's. Their nice but could be more robust. Both of the battery covers are broke on mine. I'm leaning on trying out the Fieldpiece SHR3 http://www.fieldpiece.com/psychrometers/230.
    RSES CM Member
    NCI Certified Air Balancer and CO/Combustion Analyst
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  8. #8
    Join Date
    Mar 2007
    Posts
    3,103
    The Fluke 971 Temperature & Humidity Meter works pretty well for me.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  9. #9
    Join Date
    Feb 2008
    Location
    Waffleville
    Posts
    10,339
    Quote Originally Posted by Tech Rob View Post
    The Fluke 971 Temperature & Humidity Meter works pretty well for me.
    and you put that in the duct???
    If Guns Kill People, Do Pencils Misspell Words?

    http://www.youtube.com/watch?v=An2a1...eature=related

    Before we work on artificial intelligence why don't we do something about natural stupidity?

  10. #10
    Join Date
    Nov 2005
    Location
    Kansas
    Posts
    4,413
    Quote Originally Posted by beachtech View Post
    and you put that in the duct???
    That's why I like the Testo stick. Measuring Temperature and Humidity is the specialty of Testo. Why go 2.class?

  11. #11
    Join Date
    Dec 2006
    Location
    Goodyear, AZ
    Posts
    197
    I use a Fieldpiece SRH2 but if you need a induct the SRH3 is good one.

  12. #12
    Join Date
    Apr 2012
    Location
    Millsboro, DE
    Posts
    100
    I've had a Fluke 971 for over a year, I always believed its dry bulb readings were accurate, but I never had a high degree of confidence in its RH readings. The small printed notice packed with it warned that it was not for use outdoors. I emailed Fluke for clarification (OK to use inside a home with some windows open? OK to use in a vented crawl space? OK to transport the 971 in a vehicle? Etc.), wasn't happy with the response. The final straw came in a data center supplied by five Liebert units: The Lieberts' return sensors indicated 69 or 70F and 40 to 45%; the Fluke showed 71.5F and 37% in the room, 10 to 15% less moisture than the Leiberts indicated. It's now gathering dust on my desk. I was going to buy a GE Psychlone ($400), but maybe I'll try the SRH2 instead. Thanks for the tip!

  13. #13
    Join Date
    Dec 2004
    Location
    Grand Rapids, MI
    Posts
    611
    I have used the 'Mannix' brand for about 9 years with no failures, nice and thin so you can put it in the airfilter slot and cover to get the return air reading not the basement air.
    I added a string to get it back out of the slot.
    luck dan

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