Sling Psychrometer

[spongebrain~~]

What brand of Sling Psychrometer does everyone like to use? Does anyone use the Fieldpiece head?

[Mr Bill]

I was also looking for some feedback on this one.

http://fieldpiece.com/garage-sale-browse-product.htm

[karsthuntr]

I just bought this one:

http://us.fluke.com/usen/products/Fluke+971.htm?catalog_name=FlukeUnitedStates

[coolwhip]

I use a digital meter made by Amprobe.

[tostaos]

I use a Testo stick, that I insert into the duct.
http://go.testo.de/online/abaxx-?$part=PORTAL.USA.ProductCategoryDesk&$event=show-from-menu&categoryid=2734356

[270wsm]

Let me know how you like the fluke. i have been thinking about buying one of those.

[nun]

I have the Fluke 971 it works well.

[sirhc]

I'll say this from a younger guys perspective. Waste all your money on all the digital psychrometers that you will. I have and decided that the good old fashioned sling is really the most reliable. I use distilled water. If I want more than the 5 % RH accuracy of the scale then I use the psychrometric chart.

O.K so maybe I hate the chart, I use a program on my PDA called EzAir when looking for more than wet bulb. Believe me when I tell you when you look goofy slinging it, in the end you really have an accurate wet bulb. I was at a residential install about two weeks ago and a 23. year old blonde was really interested in understanding my slinging.

sirhC

[skr0oface]

http://www.extechstore.com/index.asp?PageAction=VIEWPROD&ProdID=735

Check that out, then click the .pdf

maybe asking alot out of a unit, i'll roll the dice on it regardless.

[corny]

Originally posted by skr0oface
http://www.extechstore.com/index.asp?PageAction=VIEWPROD&ProdID=735

Check that out, then click the .pdf

maybe asking alot out of a unit, i'll roll the dice on it regardless.

I wonder how the calibartion references work and how they last....

I once read that the best way to calibrate a humidity sensor was to place the sensor in a plastic baggie with a good sized pile of really damp salt in the bag....wait 24 hours and the air in the bag should be at 100 percent humidity.

You wouldnt have to place the whole sfrychomter in the bag with the salt...just the sensor end....possibly seal it with a rubber band or something.... I wonder if the heavy salt air would attack the metal in and on the sensor....some electronic humidity sensors I have seen have gold plated parts....but Im sure not all of them do.

[mark beiser]

I'm looking at purchasing a Testo 605-H2 "humidity stick".
http://www.testo.com.cn/en/site/products/show.asp?ProductId=111

It does what the 605-H1 linked previously does, but it also displays wet bulb temperature, so you don't have to calculate it.

[oloenneker]

I have the Amprobe kind.... It's a little slow, but it does work. Does the Fluke version respond faster or is that just how they all are?

http://www.contractor-books.com/AM/Images/THWD-2.jpg

[psychometric]

Bacharach. my third one in 14 years. As long as they keep selling me new bulbs everytime I smash one, I'll keep using it!

[travistee]

I'm a new tech out of school 1 plus years ago and reading this forum I feel like I don't know what the hell I'm doing.
No one at my company takes a GH under their wing. I'm very enthousiastic(mispelled)
I'm 38 and am working my A$$ off trying to be the best I can

[weber]

I have the feild piece one and love it, I used to have just the digtal hand held one and it always seemed to give false readings so I got the accessory head. Love it!

[dec]

have had a Talor sling for years. Does fine for me but if I was measuring humidity in a duct...... I would be out of luck.

[acdude32]

I also have the ampobe and i hate it i have compared it to the fluke 3 differnt times and not only is it MUCH slower but 1st time i was off by as mych as 5 deg and 2 deg wb and same 2nd time but this last timeit was 10 deg off and 5 deg wbso i will be buying the fluke 971 in 3 weeks