Hi, i'm brian with the hvac school podcast and hvac our school comm, and today i'm actually announcing drum roll, please drum anywhere, but i'm announcing the release of the testo 440 IAQ meter. It's a really really powerful multifunction device. When I say meter, it's it's a lot of different tools, all in one. It's a kit, we're gon na call the kit, the testo 440 kit, so we're gon na start by unboxing and then I'll kind of explain how every different component of it works.

Alright. So the main, the main component of this kit is the testo 440 itself, which is kind of the hub of all the operation. This is the testa 440 DP, which means differential pressure, which means that it's a very, very accurate, very finely tuned differential pressure manometer. These are your plus and minus inputs for your manometer, and so this is a micro manometer or some people call it a micro, manometer or a precision manometer.

This is not the type of manometer that you typically use to measure gas pressure, although you can use it for that purpose. It's a finely finely tuned manometer. They can be used to measure in even the Pascal scale, all right, so you can set up for specific, different purposes, specific tests that you're going to do and it chooses the tests based on the type of tool that you have connected so right now we have No accessories connected, so it's just relying on what you can do with static pressure and with static pressure alone. You can measure Pido volume flow with a pitot tube if you have a pitot tube, but let's just go back and show where we are right now.

So we're gon na hit the back button and we are currently in the basic view, and so if I wanted to calibrate this because you can see right now - it's measuring -5 Pascal's, which is a superfine measurement of pressure. I can go and calibrate this just by pressing over until it says, P equals zero hit, OK and then it's going to calibrate it to zero Pascal's, so actually calibrating it to ambient conditions. So that's a really nice thing before you're gon na do a pitot test or you're gon na take any type of static pressure test, any type of pressure test. You want to zero it out before you start making measurements.

So that's what can be done with just the onboard features, and now they have a lot of other additional features that you can utilize as well. So now we're gon na go through one at a time and kind of talk about the different pieces of this. So we have this mini vein, which each air velocity measurement device has its advantages and its disadvantages. The mini vein can go into a duct and it measures really accurately in sort of that middle range.

It doesn't have as much reliance on the Traverse so in a traverse you are inserting it in the duct and then slowly pulling it out. So if I was going to traverse a duct, I'm inserting it all the way in and I'm slowly pulling it out and doing the time Traverse method because the the mini VNA she has some inertia to it to the blade it's not as affected as a hot Wire is for small changes in air flow. This is a hot wire and a hot wire is the most finely tuned measurement that you can take, and actually one nice thing about this hot wire probe. Is it automatically comes with a 90 degree? So if you want to take a measurement, add a diffuser and a ceiling, you could use that feature right there.

So this is the hot wire again a very accurate measure of low velocity flow. You have the large vein, which is best for measuring at a typical diffuser at a return or supply. This is going to be your best option for doing that, because it's catching a larger volume of air at once. For example, if I was going to be measuring a supply girl like this on a ceiling, my best option would be to use the large vein and to paint it slowly and then and then take the average.

So using the average Traverse method. And then we've got a couple: additional sensors we've got a high quality, humidity probe. So those of you who are used to the 605 I this is a really high quality and the 605 I in and of itself is very high quality. But this is a very high quality, humidity probe.

Once again, this can attach and detach very easily, but it's a little different motion, so here you actually twist the collar. So I did that. So that's that's in place you twist the collar and then you detach it. Like that - and it has this eight pin plug here and the way you put it back in - is you see this is a flat this flat section here lines up with a flat inside, and so you place the flat with the flat insert it in snugly, and Then turn the collar and then we also have a air quality probe, which is humidity temperature and co2.

It's a good test to do if you are trying to measure co2 levels within a space, and then we have a extension that goes up to 41 inches for doing a duct Traverse. So you can use this as an extension to help you simply just reach event or you can use it when inserting in and doing a duct Traverse, slowly pulling it out of a larger diameter duct. This fitting right here attaches to the air measurement probes, both the hot wire anemometer, like that or the mini vane anemometer like that, and then the adapter to then adapt these back to the actual meter itself. The measurement device itself is this adapter, so this adapter makes the same sort of connection that you see with the air quality probes, but then can be attached to so there you go, there's your hot wire and then this goes in to here.

You line the flat up with the flat and you twist the collar around and now you can measure using this handle. So you also come with two different measuring handles. You have one that is Wireless. You see, there's no cord, there's a lanyard, but there's no cord.

It's just connects with bluetooth. So if I turn this on and see it turned green you'll see it connect and you'll see it start to display a reading there we go, you can see this hot wire shows relative humidity, it shows temperature and it shows a velocity of flow through that hot Wire, you can scroll up and down to get the readings, and that's all done wirelessly now, in addition to that, this kit also comes with a wired handle, connects in the exact same way. Currently I have connected in the temperature and humidity probe. All I have to do now is connect this to the top we're also reading a separate temperature and relative humidity reading now using this, so you can use the wired or the wireless with any of these heads.

The other really nice thing about all of these devices is that each of the heads each of the the particular tools, because each one of these is a tool I mean really it's it's. It would normally have been a free-standing tool. This-This-This. Your large vein, your mini vane, they're all separate tools.

These can all be calibrated independently from the handle, so you can send these in to get them calibrated and then still keep the handle ready for use with the other tools. So the great thing here is: is you can do a wide range of different air quality tests with just a single kit, air quality and air velocity tests with just a single kit? If you add this, in addition with something like the testo 420 flow hood, you can really take almost any test. You would need. They also have some additional optional meters, a couple that I like the carbon monoxide meter.

They also have a Lux meter for measuring light quality in a particular area, and they have one that measures turbulence in a room. So it looks like a like a large dome and you set it in a room and it actually measures air turbulence. So you really have a wide range of options that you can use with these two different device hand I'm calling them handles, but these are actually the the connecting devices that then connect back to the 440 DP. So that's basically it.

This is the test. Oh 440. Iaq, I think it's a great option for anybody, who's, doing high-level testing of airflow psychometrics and it will be available soon at true tech tools, calm, i'm brian or with the hvac school podcast and hvac our school calm. We'll talk next time.