I was looking into buying one of these. Do you all think this would be accurate enough to set a charge? Something quick and easy like this would really be ideal.
Imagine if a manufacturer made one of these that also took ambient, press a button, and calculated superheat right before you. And all in your pocket.
I love the PRH2 it's pretty good and I carry it almost everywhere at work. 1/2" Unibit on my 1/4" impact lets you take quick in-duct readings. You can get by with 3/8" on the hole but I prefer the 1/2" lets it set a little better in the duct. It's a little sluggish on readings but fast enough for me. And ya can't beat the price tag on them.
First one lasted About a week. Got it replaced under warranty. Bought the Testo 605 so haven't been using it much. Pulled it out today and it's deaded. Won't turn on. Swapped battery, same thing. GOnna take it back again. No problem with the Testo.
Mine died after about a month, still need to trade it in for a new one.
It is completely useless for in duct readings in an attic environment because the prob doesn't insert far enough into the duct to get into the air stream.
In most cases, especially with lined metal ducts, it only gives you the conditions of the boundary layer of air near the walls of the duct.
It is handy for walk around readings, and for getting ambient conditions.
It also isn't really a pocket tool.
It is to long and heavy for a shirt pocket, and because of how it is constructed, it is far less rugged than you would expect something encased in an aluminum tube to be.
If more government is the answer, then it's a really stupid question.
Mine died after about a month, still need to trade it in for a new one.
It is completely useless for in duct readings in an attic environment because the prob doesn't insert far enough into the duct to get into the air stream.
In most cases, especially with lined metal ducts, it only gives you the conditions of the boundary layer of air near the walls of the duct.
It is handy for walk around readings, and for getting ambient conditions.
It also isn't really a pocket tool.
It is to long and heavy for a shirt pocket, and because of how it is constructed, it is far less rugged than you would expect something encased in an aluminum tube to be.
How about a longer cap that doubled as a scoop with intake and exhaust openings to pull air across the sensor from further inside the duct? Maybe you could cut a piece of tubing or cpvc as a attachment.
How about a longer cap that doubled as a scoop with intake and exhaust openings to pull air across the sensor from further inside the duct? Maybe you could cut a piece of tubing or cpvc as a attachment.
Or I could just use something with a longer probe, like the Testo 605-H2.
Just have to remember to keep the battery door taped on...
If more government is the answer, then it's a really stupid question.
Fieldpiece also has the SRH3 which is more full functioning Psychrometer that can also measure target superheat and target evap exit temp (target temp split). Check out the video
Fieldpiece also has the SRH3 which is more full functioning Psychrometer that can also measure target superheat and target evap exit temp (target temp split). Check out the video
oh, oh....I've got that one- don't get to use it all the time; but it's sweet. still haven't figured out all the inputs though.
It`s better to be silent and thought the fool; than speak and remove all doubt.
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Originally Posted by mark beiser
It`s better to be silent and thought the fool; than speak and remove all doubt. 
