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I wish these slides were numbered Day II and numbered.

 

Iron

No actual design at this moment, interested in discussion of types of pressure sensors

Pressure of sea water to determine to what depths the marine mammals dive to (and sometimes fish,too)

Iron

I found this one particularly interesting

I'm looking to measure atmospheric pressure

@moderator - detecting an air pressure wave

Iron

Great to have access to the recorded sessions!

Iron

Missed the live lecture...

Iron

Thanks Randy and Chuck.

Iron

pressure for our devices is usually specified as PSI

Iron

not currently working on projects involving pressure sensing.

Iron

interested in the presure sensors, maybe for future apps.

Iron

right now, not working with presure sensors

Iron

Thanks Randy; Great Lecture

Iron

I am not measuring pressure on my current projet

Iron

nicesection,understoodclearly.thanks.

willmeetinnextsession

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Iron

good session, thanks Randy

Iron

OK, thanks Randy.  Good talk! 

Iron

Slide 16

 Is there any compensation for variation in atmospheric pressure? It is the static atmospheric pressure (psta) that is read by the pressure sensor. I miss-spoke agreeing to it as pressure at sea level. Since the reference is sealed within the sensor, that provides the basis for the sea level measurement.

Blogger
Thank You, Randy.
Iron

 On Slide 16 (altitude calc), I assume p-sta is the pressure at sea level. Correct?

Yes

Blogger

Oops! I see that p-sta is the ONLY pressure in the equation, so it must be the measured pressure.  Is there any compensation for variation in atmospheric pressure?

(my previous post:

@Randy Frank: On Slide 16 (altitude calc), I assume p-sta is the pressure at sea level.  Correct?)

Iron

@Frank - With accurate differential pressure measurement, does temperature need to be taken either side of the orifice ?

This is interesting question. When suppliers provide data regarding the effect of temperature on their sensor it is normally done with both sides of the sensor at the same temperature. If the sensor is temperature compensated, in a flow measurement the temperature sensing is an integral part of the sensor. If a large temperature difference exists between the upstream and downstream measurement, it should be essentially averaged in the sensing circuitry. If you are providing the temperature compensation yourself, what you have to consider is the upstream temperature or downstream temperature more important? Does the situation change over time? The answers may make you consider two temprature sensors but in most cases you should just need one.

Blogger

Thank you for the responses to my question.

Iron

Good session thanks

Iron

@Randy Frank: On Slide 16 (altitude calc), I assume p-sta is the pressure at sea level.  Correct?

Iron

have all of it thanks

Iron

 

what is meant by ppm? 2800ppm/C

 

parts per million

 

Blogger

@frankziege: ppm = parts per million

Iron

Thank you Randy for today's lecture

Iron

Good session Randy, more to look forward to tomorrow.

Iron

Hi Randy!

Can I review your audio later?

Iron

Thanks @Chuck & @Randy !

Iron

Thanks Chuck and Randy.

Iron

Looks good, up to date.

 

Iron

what is meant by ppm? 2800ppm/C

Iron

Thank you Randy. Very helpfull

Iron

@Frank - With accurate differential pressure measurement, does temperature need to be taken either side of the orifice ?

Iron

switch from IE to Google Chrome: no audio issue any more

Iron

Air, seawater, vacuum 

MEMs-derived

kPa, psig

Iron

@chuck,  kPa or mmHg

Iron

@GSChmick, I also declined the flash plugin update ( if it isn't broken etc ) and my audio works :)

@Teddkoh, The audio is accessable in the same location as you clicked to launch this page.

 

Iron

Use BOSCH BMA180 Meausre in kPA (Weather standard measurements in Canada)

Iron

Can I review this course after the lecture with Audio?

If so, how I can retrieve the audio?

Iron

@mahdee: I'm not having audio problems today, but I did in the last lectures several weeks ago, and it was because I had updated my flash plugin.  I declined an update today.  It's possible that others may have updated and are incompatible with the audio stream.  I'm running Firefox.

Iron

Also...if you're unable to make live audio work, an archived edition will be available afterward.

Blogger

If you're having audio issues,try refreshing (F5). Also Google Chrome seems to be a preferred browser.

Blogger

Measuring barometric pressure in Inches Hg, pitot pressures in Inches water.  Use KPa on GCMS.

Iron

keep the cursor near the Play button & keep hitting it when it stops!

Whatever the customer asks for!

Psi, Torr & Meters of H2O!

Iron

Density Altitude is my most common

Iron

do not use pressure measurements in my applications

Iron

What are people using for browsers that are experiencing the audio droppage ?  No problems here with Firefox.

 

Iron

No problem Audio here.

 

Iron

Audio seems to be much better using Google Chrome insted of IE.

Iron

Good audio here, no drops yet.

Iron

same here, audio stops

I have to repeatly click "play"

Iron

I have had my audio cut off three times.

@Chuck: not measuring pressure on current projects.

@Randy: Yes, MEMS seems like it is proliferating everywhere.

Iron

This is common pressure sensor to measure weight, blood pressure and so on.

Iron

elastomeric diaphragm/HE sensor.

Silicon Piezoresistive

Iron

MEMS Silicon piezorisitive

Iron

Oil well pressures

 

Iron

Underwater and Air applications

Iron

Atmospheric pressure.

Iron

Using to measure barometric pressure

Iron

This month I'm measuring barometric pressure and pressures on various pitot tubes.

Iron

audio fail. again. will listen to recording later. thanks.

Iron

We measure differential pressure.

barometrick pressure

 

Iron

Atmospheric Pressure (Absolute)

Iron

Good afternoon Randy.

Iron

Hello from Germany

Iron

Looking forward to this...

 

Iron

Hello again from Milford, CT ..

Good afternoon from Northern Minnesota

Iron

hello from sunny MIAMI.

Hello from Silicon Valley

Iron

Hello from Huntsville

Iron

Good afternoon folks.

Iron

hello from huntington, ny

 

Iron

Hello from Albuquerque.

Iron
Hello from Mesquite NV
Iron

Had time to listen to yesterday's lecture, which I missed!

Hope today's is just as interesting.

Iron

Good morning from San Jose, CA.

It's 57°F now and a high of 71°F.

Iron

good afternoon, everyone

Iron

Looks like a good lecture today

Iron
 
If you need to measure pressure, it should provide a few helpful tips and in some/many cases, the thought process applies to other measurements, too.
Blogger

Oops, I'm an hour early

Iron

Looks like a good lecture today

Iron


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