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  1. #1
    Join Date
    Dec 2012
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    columbus, OH
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    Pocket phsychrometer

    Thinking of ordering this http://www.trutechtools.com/PRH2 can anybody tell me if its dependable.

  2. #2
    Join Date
    Jul 2009
    Location
    Kansas
    Posts
    372
    It's a little slow on measurements but I've had mine since they came out and it's held up good. Good for a quick check. And the price is a lot better than it use to be.

  3. #3
    Join Date
    Aug 2004
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    North Richland Hills, Texas
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    I'm on my 3rd one, replaced twice under warranty. Both times it died in my tool bag, no drops, decently protected when stored.
    It's ok for walk around readings, but the insertion depth is to short for it to be useful for in duct measurements through a test hole.

    My advice is to either get a SRH3 or SDP2, or get a Testo 605-H2, and secure the battery door with tape.
    If more government is the answer, then it's a really stupid question.

  4. #4
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    Dec 2012
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    Quote Originally Posted by mark beiser View Post
    I'm on my 3rd one, replaced twice under warranty. Both times it died in my tool bag, no drops, decently protected when stored.
    It's ok for walk around readings, but the insertion depth is to short for it to be useful for in duct measurements through a test hole.

    My advice is to either get a SRH3 or SDP2, or get a Testo 605-H2, and secure the battery door with tape.
    Would the depth of the sensor make a noticable difference in wet bulb readings?

  5. #5
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
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    Quote Originally Posted by Core_d View Post
    Would the depth of the sensor make a noticable difference in wet bulb readings?
    If you can't get far enough into the duct to get past the boundary layer of air, into the actual air stream, none of the readings you get mean much of anything.

    Due to the stupidity we have here in Texas of ducts and air handling equipment installed in attics, especially furnaces with uninsulated blower compartments, I frequently run into situations where I can't really get good coil entering air readings with an instrument that has a 5" insertion, like the Testo 605-H2 Humidity sticks, so I'm ordering a Fieldpiece SDP2.
    If more government is the answer, then it's a really stupid question.

  6. #6
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    Dec 2012
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    columbus, OH
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    Your probably right. The price is right and I like the idea ofkeeping it handy in my shirt pocket but, I might just hold off and get a quality psychrometer.

  7. #7
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
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    Quote Originally Posted by Core_d View Post
    Your probably right. The price is right and I like the idea ofkeeping it handy in my shirt pocket but, I might just hold off and get a quality psychrometer.
    Unless you have Jolly Green Giant size shirt pockets, it doesn't work as a "pocket tool," the inclusion of a pocket clip on it is comical.

    You can't even keep it in your pants pocket really.
    Instead of making it so the aluminum protective cap screws onto the aluminum body, so it would be like one rigid tube, they made is so the cap threads onto the base of the plastic probe part, which is glued into the end of the aluminum tube that acts as the housing. If you put it in your pants pocket, and sat down, chances are the probe end would break right off, protective cap and all.

    It's one of those tools that was a great idea, but poorly implemented for field use.
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    Last edited by mark beiser; 03-15-2013 at 08:49 PM.
    If more government is the answer, then it's a really stupid question.

  8. #8
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    Dec 2012
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    columbus, OH
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    Yea, it sounded good but I was weary about it. Thanks for all the info

  9. #9
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
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    Now that I've savaged it over its physical shortcomings, I have to say that I like that it will do Dewpoint and wet bulb calculations. I'll never understand why Testo didn't make the 605 do both, instead of making 2 separate instruments.
    The sensor in it is also quite accurate, at least as good as any others I've used that were under the $500 range.
    If more government is the answer, then it's a really stupid question.

  10. #10
    Join Date
    Aug 2009
    Location
    Maine
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    Has any one tried the SDP2 yet? I have been thinking about getting 1 but thought I would see how they were working out.

  11. #11
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
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    Quote Originally Posted by lytning View Post
    Has any one tried the SDP2 yet? I have been thinking about getting 1 but thought I would see how they were working out.
    I don't think anyone has them in stock yet.
    If more government is the answer, then it's a really stupid question.

  12. #12
    Join Date
    Aug 2009
    Location
    Maine
    Posts
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    Quote Originally Posted by mark beiser View Post
    I don't think anyone has them in stock yet.
    I see TTT has them on back order

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