Has anyone..

[Trehak01]

Im looking into wether or not to buy the Testo Humidity Stick w/Wet Bulb, or just keep what i have which is the Psychrometer Digital ARH4 Fieldpiece. I dont really use the Psychrometer Digital ARH4 Fieldpiece for much, simply cause i dont know if i can trust it. anyone have any luck with either of them or have tested them together?

[albowrx]

Having one must be better than not having one at all. Your signature should kick in by now.

[Gcanno]

You should first see if the one you have is working correctly,It should not be a big deal to ask the folks at the parts house to compare yours to a new one.
If you don't use it much then whats the point in getting another, Though i have been taught it is a essential tool. If your looking at Testo make sure it's the 605 h2

[tech45]

I have that tool from Testo ( can't remember the model ) but it works well for me. It does WB , RH , DP , and DB ( F and C ).

[pacnw]

I have 2 of the 605H2 and only have one issue, as do most others, the battery door is EASY to loose!!

[Trehak01]

I have the Digital ARH4 Fieldpiece attachment its isnt easy to use in return ducts and you have to put the whole damn thing in there Id much rather have a prob to just stick in and get a quick reading. I dont trust it cause I have gotten some bad tools recently from fieldpiece thats why. there is only one guy at work that uses the testo 605 h2 everyone eles uses a bacharach sling psychrometer so they tell me to get one of those.. so..

[RussellHarju]

I have the Digital ARH4 Fieldpiece attachment its isnt easy to use in return ducts and you have to put the whole damn thing in there Id much rather have a prob to just stick in and get a quick reading. I dont trust it cause I have gotten some bad tools recently from fieldpiece thats why. there is only one guy at work that uses the testo 605 h2 everyone eles uses a bacharach sling psychrometer so they tell me to get one of those.. so..

We now have an accessory head that can go in the duct called the ARH5. It runs about $129.00. Info on it here http://www.fieldpiece.com/accessory-heads/arh5

We also have a stand alone version, the SRH3. Here's the video on that


Or we have a pocket psychrometer that can go inside a duct. Info here
http://www.fieldpiece.com/pocket-tools

[ch4man]

We now have an accessory head that can go in the duct called the ARH5. It runs about $129.00. Info on it here http://www.fieldpiece.com/accessory-heads/arh5

We also have a stand alone version, the SRH3. Here's the video on that


Or we have a pocket psychrometer that can go inside a duct. Info here
http://www.fieldpiece.com/pocket-tools

Russell, that pocket psycrometer is neat, but there are no specifications to be found..

i assume due to the size difference ( and price) it does not use the same techology and have the same accuracy& response time as the SRH3.

can you please "fill in the blanks?"

also what size hole would need to be drilled in the duct and whats the probe length? (this is regarding the pocket one)

thank you, John

[BillDuffy]

Old School!
http://www.grainger.com/Grainger/TAY...120606003659:s

[ch4man]

you must cut a pretty large hole in the return drop to swing that thing inside it....

[Trehak01]

you must cut a pretty large hole in the return drop to swing that thing inside it....

thought about it

[RussellHarju]

Russell, that pocket psycrometer is neat, but there are no specifications to be found..

i assume due to the size difference ( and price) it does not use the same techology and have the same accuracy& response time as the SRH3.





can you please "fill in the blanks?"

also what size hole would need to be drilled in the duct and whats the probe length? (this is regarding the pocket one)




thank you, John

Russell, that pocket psycrometer is neat, but there are no specifications to be found..

i assume due to the size difference ( and price) it does not use the same techology and have the same accuracy& response time as the SRH3.

----Reponse time is fast and accuracy is +/- 2 degrees F ---

can you please "fill in the blanks?"

also what size hole would need to be drilled in the duct and whats the probe length? (this is regarding the pocket one)

---The probe is .38" diameter and 2" in length----

thank you, John

[mark beiser]

I've used the Testo 605 H2 humidity sticks for years. They fit nicely through the 1/2" test holes I drill in all of the equipment I service so I can get the actual entering air conditions at the evaporator coil.

I recently picked up a Fieldpiece PRH3.
It is a handy instrument for walk around readings, as it responds faster than the Testo H2's, but the sensor end doesn't stick far enough into a duct to get good readings.

I'm thinking about getting one of the fieldpice units with the extendable probe, because even the 5" insertion of the H2 isn't really long enough in a lot of situations.
I've been eyeballing the wireless setup, so I can monitor the return WB temp on the fly while I'm at the outdoor unit.

Old School!
http://www.grainger.com/Grainger/TAY...120606003659:s

Pretty much useless for getting getting the actual evaporator entering air conditions on a system with ducted returns...