Name: Spirometer - Tech Tips with Vernier
Uploaded: 2019-02-02T08:21:19.000Z
Duration: 8 min 46 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Hello, I'm John Melville from Vernier Software & Technology,

Future continuous

Now, our spirometer is this little device right here,

and it's used to measure tidal volumes from the lungs

You basically breathe through the device.

Now, if you're going to be breathing through a device,

there's a couple things that you need to know.

So we have a little bacterial filter that comes with the kit,

and you can buy more of these if you want to,

but that has to be attached to the spirometer.

And then we also have these disposable mouthpieces

that get attached to the bacterial filter.

and the reason why you want to use a nose clip

is because you don't want the subject or student

they're supposed to just be breathing through their mouth

to look at tidal volumes and lung capacity.

that you need to know about the spirometer

One is that the spirometer needs to be zeroed

in the position that it's going to be used,

So if I'm going to be using the spirometer

at about this level, I need to make sure that once

I plug it into the LabQuest, I zero it in that position

and I don't bend back or forth or move from side to side.

So let me just put the spirometer together.

a little label on the spirometer that says inlet.

This is the side that you want to breathe through.

So I'm going to take the bacterial filter

and I'm going to attach it to the side that says inlet.

Then I'm going to put one of these mouthpieces

And then I'm going to... untie this cable...

and plug the spirometer into the LabQuest.

And what you should see now over at the LabQuest

is that there's a flow rate that's being displayed,

but there really shouldn't be any flow rate.

I'm not breathing through it, nothing's happening.

So I'm going to be using it in about this position.

So what I'm going to do next is zero the spirometer.

And to zero the spirometer, all that I need to do

I should just be able to select a zero right there.

And now you should see that the flow rate is very close to zero.

It's fluctuating between -0.002 and -0.001,

Now the next thing that I'm going to have to do

But before I do that, let me just tell you a few things.

I'm going to just be holding the spirometer like this.

I don't want to put the mouthpiece up to my lips

I want the mouthpiece in my mouth to get accurate data.

So what I'm going to do is put this back on the spirometer.

And then I'm going to take two normal breaths,

and then I'm going to breathe in very deeply

and exhale very deep -- and exhale forcefully

You can see that each one of these peaks here,

that the trough of each peak, here and here,

Now, you can adjust that using a baseline adjustment

And then you'll see these three things come up,

and what you want to select is Baseline Adjustment.

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Spirometer - Tech Tips with Vernier

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