WHAT MAKES IT WORK? #15 How a Pressure Gauge Works tubalcain bourdon tube

[@marknailis]

As a lecturer in engineering. This has really helped me explain this. You are brilliant.Thank you.

[@mrpete222]

👍👍👍

[@mycompasstv]

Fantastic. "Never before seen on youtube." I love that line. Great post!

[@mrpete222]

+mycompasstv Thanks

[@fazalumer1407]

I just wanna know from where the pressure is entering and forcing the that copper coil to move !

[@guitarttimman]

The air enters through a manifold and actually travels into the bourdon tube.

[@RobertWierzbowski]

Great explanation, but that line really took it to another level 😂

[@abcdepartmentofelectricale2920]

Never before experience. This is the TRUE way of teaching the mechanism

[@ollienash6747]

I never seen the inside of a pressure gauge before and always wondered how it works. I am a mature student maintenance apprentice based in the UK and this has helped so much. Thank you Mr Pete!

[@roylucas1027]

Mr. Pete. I would have loved to have had you as a teacher. Oh, my mistake, I have you as a teacher now. Thank you.

[@mrpete222]

+Roy Lucas Thanks

[@monteprovolt2253]

I learn something new every day. At 62 years of age, I look forward to your shop class on KZbin.

[@mrpete222]

+Monte Provolt Thanks

[@grahamspencer903]

Thanks for a great instructional video! I have a bicycle floor pump, with a similar gauge, that I guess I must have dropped a few years ago. Since then, it has read about 15psi at no pressure. I have always just added 15 to the reading. After watching your video, I opened it up and was able to squeeze the curved "loop linkage" with a small pair of needle-nosed pliers to re-calibrate it to read zero at zero pressure. I then checked it on a tire pumped to 50psi against a new pump and it was bang on! Thanks to you, I feel like I have learnt and accomplished something today!

[@mrpete222]

Thank you, I'm glad it worked out for you

[@Nelsjd]

Very interesting Mr. Pete! Your manner of teaching makes it very entertaining for us 45 year olds!!!

[@fernandgeenevan8773]

Hi Mr. Tubelcain, I've known for many years how these things work, but have never seen a demonstration like this. I hope that a lot of young dogs will be viewing this! Thanx!

[@uncut_cowboy]

Tha ks so much, I was trying to understand this while reading a textbook on the subject and I'm really a visual learner so I appreciate your efforts

[@mrpete222]

👍👍

[@BParker55]

OMG Tubalcain! Work and learning throughout my life always brings me back here!

[@mrpete222]

👍👍👍

[@terrylarotonda784]

Once a teacher always a teacher. Fantastic job. Thank you.

[@mrpete222]

+Terry LaRotonda Thank you very much

[@johnnyfrazier2969]

I’d never explored the inner workings of a pressure gauge until just now. I am north of (60) years old and taking Operations and Instrumentation courses at TSTC in Marshall, Texas. Again, I’ve used air-pressure gauges in all kinds of work oblivious to their mechanics ... until today ☀️ A note of thanks for your guided tour. How It Works - Bourdon Tube. I took detailed notes that I might describe it’s working as well. JA Frazier, Marshall, Texas

[@mrpete222]

Glad you liked it

[@kymion]

I've made the decision to watch one of your videos every day until I've seen all of them. They really are both entertaining and informative and we thank you for making them.

[@FarmCraft101]

Awesome Mr. Pete. I usually am the guy wondering how things work, taking things apart, etc, but it never occurred to me to consider a pressure gauge for some reason. I use them all the time, but had no idea how they worked.

[@GlynRobinson]

Mr. Pete!! Thank you so much for this video. My gauge in my air tank will not zero out. Now I know how I can calibrate it. You’re right, never before seen on KZbin! Take care, Sir!

[@mrpete222]

Thanks

[@Londonbridge978]

I'm a calibration technician and thank you for the video! This info is very useful.

[@mrpete222]

Thanks

[@rrangana11]

Thank you Sir....Well Done ... Again thanks for showing the inner workings of bourdon tube ... very much appreciated. You are an excellent teacher and all of your teaching videos are going to live ever...

[@mrpete222]

+rrangana11 Thank you

[@rlewis1946]

What a wonderful legacy you are leaving for future generations. Highest regards to you for sharing your time, knowledge and skills with the whole world!

[@chrisforrest3551]

Again your rears of knowledge helped me solve a problem,milton compression tester would not zero.by bending the brass loop,fixed the gauge,and tested accurate Mr Pete you are the best preciate ya

[@mrpete222]

Glad I helped

[@supanaratn7558]

Mr. Pete thank you for educated and entertain me. Love your teaching style.

[@mrpete222]

😀

[@lifeinmy30s90]

This video is amazing! I use it all the time to explain how pressure transmitters on aircraft work! We love THE BOURDON TUBE!

[@mrpete222]

Thanks

[@TEAMPHY6]

Man I wish there were still shop classes and teachers like this. Adding this to my homeschooling playlist.

[@mrpete222]

👍👍

[@anupjain8605]

you are the excellent teacher, the explanations and the reasons are head on. i am mechanical engineering student and your channel is the best one to get the practical knowledge. thanks a lot.

[@carver3419]

Another top-notch presentation ... Clearly, you were, and still are, a superb teacher.

[@mrpete222]

+carver3419 Thanks

[@pjhalchemy]

Great analogy with the party favor, Mr. Pete. Pretty interesting engineering when you think of it. The radial travel of a specific type of formed copper tube expanding/contracting in some preconceived pattern, translated by gear ratios, and the linear linkage/ adjustments to a rotating shaft, needle and linear scale...impressive. Eddie currents are another favorite. Thanks!

[@mrpete222]

+pjsalchemy Thanks

[@ashy1423]

Thank you so much for this in-depth informative explanation. I hope all your videos are like this as I’ve just subscribed. You explain things to us like my father used to, the do’s don’ts why’s and why not’s and all the outcomes. Please stay well and keep educating us with your videos. I’m 60 now and still learning, What a wonderful world. Kindest regards Ash from Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@mrpete222]

I’m glad you like the video, and thank you for subscribing. You have 1400 videos to watch.

[@timhyatt9185]

of all the things I took apart as a kid, one of these gauges was never at my disposal to look into.....I always figured it was some sort of spring loaded plunger, but this seems like a far more durable, and ingeniously elegant method.....thanks!

[@mrpete222]

+Tim Hyatt Thanks

[@mikec.1259]

Good video Mr. Pete. I think that's the only thing I never tore apart to see how it works. Thanks for doing the honors.

[@conscience-commenter]

Best Bourdon tube demonstration on KZbin. Can you do one with cut away view digital gauge sensors ? Thanks .

[@mrpete222]

Thank you very much

[@Farmall4ever]

Very nice demonstration and explanation! Have never pulled one apart to see how it worked! I grew up in Amboy, IL on my parents farm. (just north of you on route 52) my high school shop/welding/carpentry teacher was just like you. Very talented at explaining and teaching young minds. Mark Streit was his name. Keep up the vids. I live in Indianapolis,In now. I always pass by your town on our way to my parents and say " theirs mr Petes place!" 👍🏻

[@mrpete222]

+Cory Fredericks Been thru Amboy many times

[@leifmann903]

This is a good overview of how a pressure gauge works. This guy gets down to business and avoids non-related chitter chatter. His cracked skin fingers tattooed with black grease only lend real-world credibility to his comments. Right on, dude!

[@mrpete222]

Thanks

[@ellenmayara8414]

So nice to show this to everybody, thanks!

[@not2fast4u2c]

I knew how they work...But now I know how they are calibrated Thanks for the Very detailed video !!!

[@mrpete222]

+not2fast4u2c Thanks

[@fsecofficial]

Pete thank you so much. I’m making a miniature one for a steam engine and was having trouble understanding the bourdon tube. Now I do. And of course I was delighted to see it was Tubalcain when I found it.

[@chriscapobianco9763]

Thank you again keep up the great work simplicity keeps the mind young!

[@mrpete222]

+chris capobianco Thanks

[@erik6456]

I have learned a lot by watching this series. Keep it up.

[@phooesnax]

Very interesting. Our friend AvE tested failure point on one of these and it went many many times past its range before the tube bursted.

[@nedshead5906]

+phooesnax Cody'sLab opens one up and discusses its workings in his video "Oversized Pressure Gauge"

[@mrpete222]

+Neds Head I'll check it out

[@ricardobernalc6170]

Great MrPete, Many thanks from a mechanical engineering student.

[@nodrogawson963]

Again a very interesting video.The picture quality and camera work are excellent. The gauge looked very good quality to say it was cheap, not like fancy looking plastic crap we are forced to buy nowadays. Thanks for sharing.

[@mrpete222]

+Nodrog Awson Thanks

[@mzt_narisumashi001]

Thank you, it's a very helpful demo for my class. Much vivider than 2D images on the textbook.

[@mrpete222]

Thanks, I'm glad I clarified it for you

[@akdenyer]

Hi LyleYes excellent once again. I deal with pressure gauges every day at work. mainly cheap ones. working from 0-15WC which is about 1/2 PSI to 10,000PSI. I design pressure washers. The low pressure ones are for gas pressure and the high pressure ones are for the water. Huge range and everything in between. The zero is normally done with the needle it is on a taper on the spindle and that little loop is to adjust the linearity. i.e. 0 is obviously 0 but 100psi might be 95psi and it changes the distance of the link radius. thereby changing the leverage and hence the linearity. Simple but effective. Never had to adjust one so far. You have to be careful with the LP ones, a colleague blew in one once and I shouted but to late it was wrecked. Allister

[@mrpete222]

+Allister Denyer Thats interesting to know-thanks

[@roaaexe]

thank you so much for making this video, sir. i have an essay on how the guage work and i've never touched one before so i had to seek youtube's help.

[@garryhammond7619]

As always, clear and simple. Many thanks for another superb video Mr Pete.

[@richardknight1841]

Marvelous as always. I expect that the ever so slightly greater surface area in the outside radius of the tube is causing the tube to try to straighten out. Like the Chinese windless. The differences doesn't need to be much. Thanks again.

[@HarmohanIndia]

Good idea to display the system 👍

[@TheMan4407]

Never thought how pressure gauges actually measure pressure. Thank you for the great explanation and demonstration!!

[@garyc5483]

Excellent tutorial as usual mrpete. regards from the UK

[@mrpete222]

+Gary C Thanks

[@lesthompson5907]

i converted one to become a DTI using the mechanism as the means to turn the needle disregarding the boron tube. a curved shaft to enable them. indicator pin to deflect the required indicator. yes, interesting worked a treat, to centra job remember were needs must the devil drives the way. Les Thompson England.

[@zachariahfun7885]

Thanks for the video ,this is very explicit and its my first time watching this practical video. thanks hoping to see more videos.

[@mrpete222]

Glad it was helpful!

[@ndereratjijahura2048]

Thanks for this practical presentation. I want to observe how you are applying pressure to the pressure gauge.

[@AwesomeFuture777]

That's really awesome! Never before have I seen how these work. I can't wait to see your other videos as well. Thank you for creating these very educating videos.

[@mrpete222]

👍👍

[@BaiioLDV]

Amazing! I'm currently studying Chemical Engineering and this is really helpful for me. Thanks!

[@mrpete222]

Thanks

[@andEYEooop]

Thank youu!! Very informative and just explained simple but thorough. This is going to help me with my test I'm about to take for BioManufacturing

[@davida1hiwaaynet]

Thanks! I love the old, ornate, fancy pressure gauges. I have a 6" Ashcroft air gauge that is probably 50 or more years old.

[@mrpete222]

+davida1hiwaaynet Thanks

[@OktoPutsch]

It's quiet awesome, as i wondered how did such tings work since longtime now, and now i remember that i've already seen such mechanism pictures but forgot them. Very inspiring, it gimmes some ideas now about making some, calibrate them approximately following another one as a reference pressure gauge, and digitize the apparatus with some potentiometer, to plug that on a microcontroler for cheap. Thanks !

[@experiencingtechnicaldiffi5184]

+Okto Putsch They already exist. A common usage is automotive oil pressure gauge. Mike (o\!/o)

[@OktoPutsch]

Moholo 88 Thanks :) (but i just found that fun as a project)

[@mrpete222]

+Okto Putsch Thanks

[@MrSpinteractive]

Fascinating. What an elegant piece of mechanical technology.

[@mrpete222]

+MrSpinteractive Thanks

[@Lee-qp6gf]

What a great subject. They just get better. Thanks for your time.

[@mrpete222]

+Lee Waterman Thanks

[@EmFlics]

My bicycle floor pump gauge has ceased to operate so I thought I would disassemble to see 'how it works' and 'can I fix it'. It wasn't obvious to me that the copper ring was actually a tube (flattened). I suspect in my case that the brass or copper section is blocked and can't easily be cleaned. Your video explained the 'How it works' excellently. Thanks. Edit... I have since drilled a very small hole (1 mm) in the far end of the flattened copper tube, and blew compressed air in the reverse direction. In this process a small quantity of ‘stuff’ was expelled out of what would normally be the gauge inlet. I then sealed the small hole with solder. Low and behold the gauge then worked. I reassembled and tested ok.

[@mrpete222]

👍👍

[@AC-dm9zm]

About to start a job in a calibration lab. Thanks for this video

[@GrantH2606]

This is how things should be taught. Simplicity is key.

[@ArminHasitzka]

Exactly what I was looking for; seeing a bourdon tube in action!

[@taiphu09]

Thanks Sir for learning how the pressure gauge work, I understood that, If over pressure come. The pressure bar will broken...

[@patricktusiime622]

You're the best at explaination.

[@mrpete222]

Thanks

[@WSCLATER]

Excellent clear demonstration.

[@yayitsmoosh590]

This helps me with my science exam! Thanks for making this video! :)

[@thegreatnormad3424]

You did an exceptional explanation 🎉

[@daagequasar8011]

This was very helpful! Something my aviation school failed to elaborate on....Thanks!

[@mrpete222]

Thanks

[@micdal22]

Very detailed explanation, beautifully captured to video. Thanks

[@mrpete222]

Thanks

[@michaell4527]

Very educational and very good quality.

[@makeminefreedom]

Thanks for the video. I have a cheap pressure gauge attached to a 12VDC air compressor. I have only used it twice and it worked perfectly until today. The compressor air passes through the gauge hose but it stays at zero. I tapped the gauge lightly but it is still locked on zero. Since the gauge is not leaking air I suspect something is jammed possibly an internal gear. I am going to open the gauge see if I can clear the obstruction and lubricate it with a very small amount of silicon lubricant. If it still doesn't work at least I'll know I tried to repair it.

[@user-oi8tg3dq7t]

Mr. Pete!! Greetings from the oldest town in Texas, Nacogdoches. Another great video.

[@mrpete222]

Hello there!

[@ExtantFrodo2]

I had no idea the copper piece was a tube. I couldn't figure out for the life of me how this worked. Thanks.

[@mrpete222]

👍

[@martinwalters1954]

Ok ok. You got my curiosity up. I did a search on "bourdon tube". I'd post a link to why I now remember why I became a guitarist/musician instead of an engineer, but youtube won't let me. But then, each choice of a vocation will sometimes lead you to the same reality. In this case.... Berelli Lagreen. However..that's a whole 'nuther animal. Never the less.. thanks Mr. Pete.. I learned something. Which at 71 defy's the axiom of.."ya can't teach an old dog..." well...you know.

[@mrpete222]

+Martin Walters Thanks for watching

[@toddanonymous5295]

Mr Pete, Another great demonstration. It was nice to see the made in USA on the face plate. Now if only our recent political movements were as smooth as the movement in this instrument .

[@mrpete222]

+Todd Anonymous True

[@morgannahyde7502]

Spent a considerable portion of my wage slave years in a fossil power plant in the Apple. There were large "steam" gauges in the various boiler control rooms with drum pressure brought right down to the back of the board. Woowie! By the time I retired in 2000 that was all replaced by local pressure transducers mounted locally with a 4-20 ma current loop output into various electronic "stuff".

[@mikebaugh9176]

Thankyou , awesome video!! Thanks for sharing your knowledge.

[@ayushkumarkamal6900]

Aree chacha OP!! such videos are really helpful Love ❤ from INDIA 🇮🇳

[@mrpete222]

Thanks

[@TheOtherBill]

Looking at the linkages and gear teeth made me think of an interesting book I found on Amazon years ago. _507 Mechanical Movements: Mechanisms and Devices_ by Henry T. Brown. Not a book you'd sit and read like a novel, but rather one you go through a small piece at a time. Well worth looking at for anyone who likes to know What Makes It Work - ie those people watching this video.

[@mrpete222]

+TheOtherBill Excellent book--I own it & many more like it

[@mikefricker1791]

+TheOtherBill This appears online with some animations, here: 507movements.com/

[@kwakmad91]

+Michael Fricker great link thanks!!!!!

[@tedsykora1858]

I really marvel at the mechanical genius of some things

[@gloriafrench6535]

I like this pretty well. shows detail to students.

[@escuddy3244]

As I was watching I was wondering what prevented the bourdon tube from straightening too much if the gauge is subject to more than its max pressure. But at 6:55 we see that the body of the air manifold limits the motion of the quandrant and therefore limits the motion of the bourdon tube. What a simple solution (although I'm sure that too much pressure would deform the linkages and throw the unit out of calibration).

[@MrTofazzel]

Excellent presentation.

[@Zickcermacity]

On a gauge with a stop post, I read that when the needle *gently* touches that post(vs resting hard against it) it is considered calibrated. I have a Slime portable inflator that was impacted, and the in-line gauge needle rests about 8-10psi above the stop. unfortunately, the shaft that mounts the gauge to the hose goes *through* the black backing(case) of that gauge. It is screwed on so tight it is impossible to remove without possibly bending or breaking the thread - and gauge head - completely off. So I just have to remember, if I want 32psi cold in my tires, inflate with the Slime until its gauge indicates approx 40psi. Then check with a known good gauge(Longacre Racing makes several that are within 1psi of a garage's inflater unit).

[@imuysal]

Very useful and informative video, thank you for your time and endeavour.

[@augustoallignani3260]

Nice explanation. Greetings from Argentina🦁

[@mrpete222]

Thanks! 😃

[@MrNakedWizard]

Great video and wonderful explanation, thank you very much from Great Britain

[@mrpete222]

Thanks

[@tommystevens802]

Thank you for explaining that. Very easy to understand now.

[@kawaldipwadhwa579]

EXCELLENT PRESENTATION AND VERY PRACTICAL

[@mrpete222]

Thanks

[@AutoNomades]

It would be interesting to make a mechanical solar tracker with two of them (one in east side, one on west), painted black. In this way, when sun heat one side on the morning, the bourdon tube mooves the miror (directing the sunlight to the device you want), until it comes back to the shadow/the other side's bourdon tube reaches the sunlight and equilibrates. What you think about ?

[@Yamanistudies]

Loved it, thanks... helps me understand some of the theory concepts for my forthcoming IE exam

[@Optimisticchris]

For the visual learners amongst us… this was brilliant. I love to fix things… today I bought a bike pump with a gauge that is not responding at all to the pressure that the pump is creating. When I take it apart, is there anything in particular that I should be looking for as the culprit? I appreciate your consideration.

[@prakash8chandra]

Very good explanation 👍 very helpful, thanks

[@srijeetsrivastava8421]

Good job man seeing this for the first time

[@mrpete222]

👍👍

[@spp-wv2ob]

An excellent presentation. Your teaching skills really shine in every video. Wish I had gone to a school that offered shop class elementary through high school, as an integral part of the curriculum. Are you familiar with the book Shop Craft as Soulcraft by Matthew Crawford (should be underlined as the title of a book)? What an excellent read especially for state legislators who have been de-funding shop programs while increasing exorbitant sports complex funding! Parents can appreciate what is happening to funding by this very well written yet hot lengthy book. I think physical programs play an important part in our education, however I am certain that shop programs exercise both the mind and the body PLUS prepare our youth to appreciate a possible consideration of a profession and, if nothing else, how to DIY for those tasks that would provide a sense of accomplishment, satisfaction, and financial savings. Looking forward to more of your "classes"! John

[@mrpete222]

+Jack Flanagan Thanks for watching & an excellent commentary on the decline & fall of vocational ed. I need to get that book. My budget was always cut so they could buy new FB helmets & cheerleaders outfits.

[@advance9572]

Very well done mrpete.. Would love a video explaining why it's dangerous to oil gauges on oxygen tanks/and what could happen if you do.

[@DJRonnieG]

Thanks for the description and explanation. I keep a gauge like this in my bike bag, after it got wet during a few rainy day rides it drifted away from zero PSI at rest. I recalibrated it to zero by bending the flat copper pipe until the needle landed at roughly zero. Still not sure how water affected it in the first but I guess something must've expanded and oxidized. Nor am I sure if my "fix" effectively made it accurate again. Waiting for a replacement to find out for certain. I only have one gauge that's compatible with my bike's preasta valve. Schrader shrader adapter, regular schrade valve compatible pressure meters never report accurately when used with a presta adapter. As a result I have to wait for a replacement presta pressure gauge to arrive before I know if it's accurate or not.

[@rustymachineshop9456]

once again good job. I was thanking at the first of the video that was a older gauge cause it said made in usa and then later u brought it up.all things are made in china now what a shame many ah people have lost their jods

[@frankbonsignore.RochesterNY]

Excellent presentation! Thank you!

[@lgh1157]

Awesome stuff, . . . just took apart a dual air gauge, gonna put some air in there and bend that U shape in the linkage, . . . gonna be interesting ha, Thanks !!!!

[@randyrhoades554]

Mr. Pete, Thanks for the education. Am going to attempt to recalibrate a 0-30# oil gauge in my 1950 Chevy to read 60# oil pressure at the 30# mark....If it is possible the needle should be more in the normal 1/2+ on the gauge..may paint the 30 into 60 if all works as I hope....Anyway, Thank you for your lessons and keep on tearing things apart ! R Rhoades

[@Karma-nb6eq]

wow it was awesome. it cleared my doubt of bourdan tube. and how it works.