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Thanks Randy, Alex and Digi-Key.

Iron

Thank you Randy, very good lecture.

Iron

Hello catching up, currently I have a displacement application and recalling I missed this lecture.

Iron

Thanks Randy and Alex for this great lecture!

Iron

great sir randy! excellent presentation, i got it...hoping another class to offer sir!

now, i finish the sensor class then going back to another class available in the archived...

thanks again to digikey and design news for this continuing education that allow us, PDH Certificate gainer for our professional development towards today's technology...

thanks to all and goodnight! see tomorrow again...

i am now on slide 12 of day 5 class slide presentation...great!

this will be the last day of class for sensor course of sir randy...now, i am now in slide 2...

i am just downloading the presentation slides lesson of sir randy...

here i am again for day 5 class lesson sir randy...

much appreciated of your lesson, you're educating me alot in advance...thanks...

Thank you Randy & Alex for informative Class.

Iron

Other than that, it was great and very informative.  Thank you Randy and Alex for another great presentation.  Looking forward to the next one.  

Iron

A few constructive criticisms: it would help to follow along if the slide number was listed on the slide (though I know that Randy wasn't planning on calling out the slides by number) and it would've worked a little better to have the presentations in .ppt format instead of .pptx (some of them gave me a lot of trouble cause my poor old Office 2002 was having trouble translating).  

Iron

The ranges for the Sick DL100 Hi are a bit confusing to me.  It has up to a 0.1 mm resolution with a +/- 2 to 3 mm accuracy?  

 
Iron

At some companies, the 20,000 psi is referred to as a medium pressure sensor.  I don't think that I have dealt with anything higher than that. 

Iron

I found out where to get a lot of unusual sensors I was looking for. Previously, I could not find sources at price points acceptable to clients.

Iron

Great presentation, Randy.  I've got a lot of catching up to do on new sensors, but you have given me a good start.  Thanks for spending so much time on this.

Iron

Great Lecture, Frank....I have learned some advance and latest procedures

Iron

Good presentation and follow up to microcontrollers and preface to industrial control ...

MEMS is an exciting topic.  I am glad you got to at least begin to touch on sensor technologies in this the last presentation as I find that most fascinating (and useful in terms of 'being one with the design').

Oh, one more thing, I don't think Randy put it into the notes, but to reach Kaman Precision Products on the Web (SMT9700 and tons of app notes):  www.kamansensors.com

Platinum

Thanks for the great presentation, Randy (I had to view this in archive..) and thanks for the mention of the Kaman 9700.  I'm an engineer at Kaman and I'd be happy to answer any questions on our products or eddy-current technology.  I can be reached at steve.tomporowski@kaman.com.

Platinum

Nice session today and great track on sensors - thanks Randy!

Iron

Thanks! Randy, Attenders, Moderator for all the information.

Iron

Okay it has maxed out here

Okay it should max out here

Looking Forward To Next Week

Thanks Randy Great Week Of Info

Testing Grading Function

Better late than never

Listening in to last fridays class class I missed

 

Great series of lectures on sensors!  Thanks for your knowledge and time.

Iron

Thanks Randy!  Great info.

Iron

Sensirion has good humidity sensors

Iron

1 kHz cystal was available 2 days ago there: http://www.trademe.co.nz/Browse/Listing.aspx?id=447119529

Iron

Thank you very much for this week!

Iron

Thanks Randy for sharing you knowledge and experience!

Iron

Thank again Randy.

Everyone have great weekend.

Iron

where can I find a 1kHz crystal? I could do some serious underclocking with that :-)

Iron

That's going to do it for this week's tutorials for me. Thanak to everyone for attending.

Blogger

 

But what is the flow we are talking about in these sensors?

Liquids such as water, gasoline, hydraulic fluid, etc.

 

I specifically remeber them adressing purified, deoniozed and plain water. I'Based on being on the outside of the pipe, it should work with a variety of fluids. Yuo will hav eto explore yourself, but here is the link:

http://www.keyence.com/products/flow/flow/flow.php

Blogger

EugeneM/Randy: how about a 1KHZ crystal?

Iron

http://search.digikey.com/us/en/cat/sensors-transducers/vibration/1966393?k=piezo%20vibration%20sensor

some of those you'll also find at sparkfun et al.

Iron

Randy, regarding vibration sensing, do you know of any good sensor (even at the hobbyist level) that can detect when a car has started?

Iron

Thansk Randy for the hard work on great presentations.

Thanks Alex for keeping us in a straight path.

Iron

Are these pressure sensors suitable for a pressure wave detection or a sound sensor (a microphone) is a better choice?

I would think based on the specifc design and target appliucations of the sesnors I showed for wave detection, a micorpohne might be a better starting point. There are  quite a few new MEMS based products.

Blogger

OK, folks, thanks for the company, Until nest time, have a nice weekend.

Iron

Thanks for all the info. Randy.

Iron

Another good presentation!

Iron

Repeatability has to do with just the reading. Reproduceability has to do with the set-up as well. such as in 4-wire resistance measurements and getting the test leads in the same exact position each time.

Iron

Any recommendatoins on humidity sensors?

As someone else has suggested Honeywell makes a sensor you should consider

Omega alos has humdity sensors even wireless devices (UWRH-2)

Blogger

Manufacturer websites are fountains of knowledge for their products...

Iron

does anybody have a rough number on how expensive something like the os5100 is?

Iron

Randy:

I am trying to come up with a flow meter for applications that are much larger, where the environment is irregular such as irrigation ditches. They are irregular surfaces that change over time and the environmental factor is highly variable. Running the water through a pipe is not an option. A large structure that is permanent is not an option. The flows range from 0 to floods but precision is in tenths of CFS. Are there flow meters that utilize the doppler effect to measure rate and calculate over an irregular channel using ultrasound or laser or some similar technology?

 

I haven't explored an aplication like this myself, but I do seem to remember a company promoting a rather uniques sensng technolog, it could have used a Doppler effect, I can't provide any better thoughts at present.

Blogger

Thanks, Randy.  You covered a lot of good stuff. :-)

Iron

THanks for the very useful presentations

Well now with Chrome I got audio. I lost last 8 slides. It was very interesting lecture

Iron

Randy. What is the difference between repeatability and reproduceability?


Iron

@syakovac OTT has some good flowmeters for monitoring channels of water 

Iron

Thanks, interesting and broad introduction.

Iron

Thanks Randy for a great week of presentations.

Iron

Very informative, Thanks Randy.

Iron

Thank you for the great presentation!

Iron

thank you Randy and Alex for the great presentation and information.

Iron

Randy:

I am trying to come up with a flow meter for applications that are much larger, where the environment is irregular such as irrigation ditches.  They are irregular surfaces that change over time and the environmental factor is highly variable.  Running the water through a pipe is not an option.  A large structure that is permanent is not an option.  The flows range from 0 to floods but precision is in tenths of CFS.  Are there flow meters that utilize the doppler effect to measure rate and calculate over an irregular channel using ultrasound or laser or some similar technology?

Iron

Thx Randy for the presentations.

Iron

Links from presentation / slides?

kenstan: I'm a beginner too but I find the best information is on product websites.

Iron

Thanks Randy for an interesting week and for adding a few more ideas to my problem solving toolbox.

Alex and all, it's been great attending these sessions and look forward to the next weeks of training and chats.

Iron

Thanks Randy for sharing us valuable information and expereince.

Please give us some usfull related books references.

Iron

Any links for books or book titles?

isoptera - Honeywell has a number of good Humidity sensors in different packages that I have used, both Analog and Digital outputs.

Iron

Thanks for an excellent presentation, and have a good weekend

Iron

any material for sensor selection for beginners

Iron

Thanks Randy for another great lecture.. :)

Iron

Thanks Randy.  Great week of presentations.

 

Randy, thank you for one more very informative lecture!

Iron

I am in that stage, Alex. Still reading and understanding..

Iron

Excellent review package!

GREAT!!  thanks for the info...

Randy thanks for a job well done

Iron

Very good information. Thank you very much Randy and Alex.

Iron

Any recommendatoins on humidity sensors?  Thanks for the great presentations.

Iron

Randy - thanks for an interesting 5 sessions - especially the links

Iron

Thanks Randy, excellent series of lectures!

Iron

Thanks Randy. What is the difference between repeatability and reproduceability?

Iron

thank you Randy! Really great 5 days!

Iron

THX for the series Randy and Alex

 

Iron

Very interesting discussion, I am not exposed as much to these type of sensors will look at implementing some in future projects. Very good presentation.

Iron

Very Informative Randy. Thank You.

Iron

For those who are interested (and if you use Windows), on slide 13, the superscript degree symbol can be had via Windows "Character Map."  Select your font of choice, then select the symbol of choice, click copy and then paste into your application.

Iron

Greatt. thanks Randy and Alex

Iron

thanks for the wonderful series of lectures, Randy. thanks Alex.

Iron

Thank you for the presentation

Iron

no audio issues in firefox (behind corporate firewall)

Iron

refresh your page - F5

Iron

Sounds wasn't working for me in Firefox, but is fine in Chrome.  Not sure why

Iron

I think i may have to listen to only archive of this lecture. Since I lost audio totally.

Iron

check your network then

Iron

NDE is sometimes known as NDT, non-destructive testing.

Iron

NDE is non-destructive evaluation

Iron

I reloaded, but no effect

Iron

yes, eddy current very accurate, is used for NDE finding pitting, cracks and wall loss.

Iron

I had to reload to get sound

Iron

But what is the flow we are talking about in these sensors?

Liquids such as water, gasoline, hydraulic fluid, etc.

Iron

Apparently, it's a font thing.

Iron

I had to switch to a different browser to get sound

Iron

0.5 raised to the power of 0- the "0" is degrees (temperature) in my world

Iron

I lost audio as well!

Iron

Got it.  Thanks Schmiedl and Zwilrich.

Iron

Ran - this is refering to degrees and not an exponent

Iron

But what is the flow we are talking about in these sensors?

Iron

@Ran that's a degree symbol .... 0.5 degrees per hour

 

Iron

Slide 14 - What's the 5 raised to the power of 0 about?

That's 0.5 degrees per hour.

Iron

Audio is lost for me?

Iron

Ran: 0.5 degrees per hour

Iron

Correction: 0.5 raised to the power of 0...

Iron

does piezo sensor for vibration see primary frequency only or harminics and mixed frequencies?

It sees whatever is within its bandwidth.

Iron

@danlafleur - harmonics are very small

Iron

Slide 14 - What's the 5 raised to the power of 0 about?

Iron

I am cut off in the middle

Iron

does piezo sensor for vibration see primary frequency only or harminics and mixed frequencies?

Just thinking ahead.

Iron

What is Free flowing technology and flow range?

Free flowing:  nothing in the flow path to restrict flow (such as a turbine)

Flow range:  G/m=gallons per minute

Iron

@j.wagenaar - chek the MSP430, the RF section

Iron

Is there a short range wireless interface that you can use between a sensor and a mcu or daq unit?

Iron

What is Free flowing technology and flow range?

Iron

I was cutoff for a few seconds and had to reload page.

Iron

@snandu13 - Also make sure you look at the spec for accuracy over time or drift.

Iron

The conductivity unit is micromhoes

Iron

@snandu13:  You have to study the manufacturer's data sheets.  Each one does it a different way.

Iron

@zwirlich - the easiest is to poin to a plastic case chip (cold). 

Iron

kevinJam: yes, that should "always" work. Use a sensor able to deal with the physics of the situation and package it with a dedicated MCU/DSP, voila, you got a smart sensor with linear output

Iron

What's the comparator  theory and circuit for magnetic sensor? How 3D be handled?

Iron

What is the level of Hysterisis on the measurement in both temp and pressure sensors? Measurement  during increase an decrease of measurement parameters . Does accuracy take into account of this hysterisis?

Iron

schmiedi :  Some kind of Gain scheduling computation?

Iron

good 'ol turbines...

Iron

by paint,  do you mean a reflective like a glossy paint, or a flat ?

Flat is better although it doesn't make a lot of difference.  Color doesn't matter much either (in infrared most organic-based materials are black.)  But overall, a flat, black paint is best.  I've even used electical tape when I didn't have any paint.

Iron

My personal preference is to use a turbine flow meter - Less sensitive to the type of fluid being measured and can be compensated for fluid density and temperature.  Just need to make sure that there are measures taken to minimize turbulence prior to the turbine.

Iron

kevinJam: if all else fails: in software :-)

Iron

For wide range measurements how do you maintain linearity?

Iron

Oh. relating to life of the sensor.. Thanks for clearing zwilrich, tony

Iron

Hello all and happy Friday. Some of us have a long weekend :-)

Iron

@caa028:  Microphones will work well for your application.

Iron

Rayaz  - Pressure Cycles refers to a life specification. Typically tested by cycling the device between 0 and FS range.

Iron

by paint,  do you mean a reflective like a glossy paint, or a flat ?

 

Iron

Does Pressure Cycles corresponds to delay needed to measure pressure??

No, it's how many times you can cycle the pressure before the sensor fails from metal fatigue.

Iron

do you have a reference for the technical note your talking about?

 

Iron

how acurate are the non contact thermometers ?

A wrong setting of emissivity gives you a wrong value for temperature.  Cheap systems assume an emissivity of 0.95.  Better systems let you set the emissivity.  One trick is to put a spot of paint on the surface you are measuring.  Most organic materials have an emissivity close to 1.

Iron

Sorry I'm late! Lunch ran long.

Iron

Does Pressure Cycles corresponds to delay needed to measure pressure??

Iron

@snandu13, "sweet spot" = center of operating range

Iron

Thanks Zwilrich. I was looking into a passing bullet detection with an array of sensors...

Iron

"sweet spot" == optimal operating range

Iron

Are these pressure sensors suitable for a pressure wave detection...

It depends on the amplitude.  For example, microphones work well for detecting the pressure wave from a bullet passing over.  For large explosions, you need a pressure sensor.

Iron

I have a IR therometer "gun" for about 40 USD claiming 1°C accuracy

Iron

Temperature sensor gun-type enclosure takes into consideration  potentially damaging effects of radiation being emitted from surface, even though just surface temperature is being measured?

Iron

Can you please define "sweet spot"?

Iron

how acurate are the non contact thermometers ?

Iron

how reliable is barometric measurement to determine height over ground over 1h, 2h, 4h?

Iron

How does non contact thermometer work?

The cheaper ones look at the intensity at a single IR wavelength.  The more expensive ones look at the intensity at two different wavelengths.

Iron

How does non contact thermometer work? Is it based on colour of the temp sensing through infra red rays? I am always perplexed on the concept.

Iron

Are these pressure sensors suitable for a pressure wave detection or a sound sensor (a microphone) is a better choice?

Iron

I used the MLX90614 Temperature Sensor to make a UV optical pyrometer.  It worked well and was easy to use.

Iron

Hi all. It took a while to reload the page.

Iron

hi everyone from sunny miami

Audio is loud and clear

Iron

You need glasses to find glasses

Iron

Hello everybody!

 

Iron

on some days the force is strong with this one, other days I have trouble finding my glasses.

Iron

Good afternoon to all. 

Iron

Thanks s.schmiedl.  I wish I was better at searching like that.

Iron

kentj: http://www.sensata.com/sensors/pressure-sensor-hvac-papers.htm shows http://www.sensata.com/download/ipt_tech-note_1.pdf

Iron

If you don't get audio starting right on the hour, press F5 or log out and back in.

Iron

kentj i enjoyed it so far

Iron

Just saw them, thanks!

Iron

If you are logged in and your company doesn't block the audio stream, you should hear the audio

Iron

It automatically starts up. Alex Wolfe wrote some instructions at the bottom of these posts

Iron

Does this just automatically start up or is there some link to use to hear him speak?

Iron

This is my first webinar/classroom session to attend. I'm looking forward to this.

Iron

Never mind.  It finally accepted it.

Iron

Oops

We're sorry, but the information you are looking for currently isn't being found. Sometimes files get moved around or removed by us. Sometimes another Web site links to the wrong Sensata page. Sometimes it's a random event. Whatever the cause, to locate what you're seeking please go to our home page at Sensata.com or type a keyword into the search box at upper right.

Iron

Hello all and happy Friday. Some of us have a long weekend :-)

Iron

I will refer to information at this link in today's session.

 

Accuracy --- http://www.sensata.com/download/ipt_tech-note_1.pdf

Blogger

Good morning (afternoon) Randy.

Iron

Good Afternoon to all

 

Iron

I've enjoyed them from the beginning. Especially the first two weeks.  How about you?

Iron

thank you  kentj hope you being enjoying the lectures so far?

Iron

Good morning (afternoon) Alex and kenstan

Iron

If you get a chance, please join our Digi-Key Continuing Education Center LinkedIn Group at http://linkd.in/yoNGeY

Blogger

Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session.

PPTX viewer here: http://www.microsoft.com/download/en/details.aspx?id=13

Blogger

The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.

Blogger


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