BOLTR: Electro-Mechanical Instrumentation | MADE IN CANADA

[@torstenb5248]

Dear uncle B, you are wrong. This one TAKES the pixies to give out air pressure. Presumably 0,2 to 1 bars. Used to control valves or pneumatic controllers. Today this is all integrated into a valve positioner.

[@torstenb5248]

Ok, it's 3-15 psi in the colonies.

[@torstenb5248]

But I'm still impressed by your ability to explain in detail how it works. LOL

[@nicholasfranks2616]

Exactly, I kept screaming at the screen but he won't listen

[@scruffy6151]

Nicholas Franks. You know how young kids are these days they just do no listen. I was 23 when this was made.

[@scottydamion]

I was wondering if he'd look at the "current TO air" on the label...

[@darikdatta]

When I get all your jokes it makes me worry about myself.

[@menardyoung9895]

Hes kinda from canada its a learnin curve im im from the central area takes me a bit to get some of them

[@frank_texas7400]

I worry when i get 1/4 of them, you need help my friend

[@tuxontour]

Only in the Us from A you should worry or if you are 0-11 Years old. otherwise it is ok.

[@MattsGarage]

Hehe, I’m from the US of A and I get them all now too. I wish I could drop some of them at work but I’m not sure “angle of the dangle” would fly in mixed company!

[@666MadDog]

you sir, must be a dad.. cause only dads get all the dadjokes :D

[@helnoSA]

So that is an I/P converter. The way this converts a DC mA signal into a proportional pressure signal is that the coil of wire wants to align with the magnet and the force is proportional to applied current. This force closes the gap between the flapper and the nozzle which changes the back pressure in the nozzle. The nozzle is fed with 20 PSI from a regulator and via a restriction. The restriction is there to limit the flow through the nozzle so that the supply does not overwhelm it. So with the flapper pressed hard against the nozzle the back pressure will be full supply pressure 20 psi and with it fully away it should be less than 3 psi back pressure. The bellows is a feedback mechanism to balance the flapper nozzle assembly. If you just have a flapper nozzle the system with respond very slowly as the maximum flow is limited by the tiny restriction in the feed to the nozzle. In order to boost this signal a booster relay is used (this is what is missing from the bottom of your I/P, it also typically contains the restriction that feeds the nozzle). So the back pressure output of the nozzle is fed into the booster relay and the output of the booster is fed into the feedback bellows. So if the output pressure is higher than the output of the nozzle the bellows will push the nozzle away from the flapper and the back pressure quickly drops which in turn lowers the output of the booster relay and then the bellows shrinks allowing the nozzle to return to an equilibrium point. Pneumatic stuff is still used all over the place in industry for valve actuation. You can take the basic I/P design and add mechanical or electronic position feedback to get very fast and very precise control. If you want to get this working in a basic way you will just need to feed the nozzle with 20 PSI through a very small restriction and measure the backpressure upstream of the restriction and have the bellows connected to that backpressure as well. The output will be 3-15 psi ish for 4-20 mA input on the coil. Span is adjusted via a voltage divider on the input and the zero is a spring pushing the nozzle towards the flapper.

[@GeorgeJFW]

Ryan Dewsbury 👏

[@gregadams558]

Current to air converter. Isn't that a fan?

[@ttiization]

A fan would be current to wind. This would need to generate air to go along

[@kasperabigail5998]

Greg Adams lol

[@CurriB09]

Ha.... HAHAHAHA. Loved it!

[@jeffcederwall4604]

other way

[@usbcd360]

Looks more like an electropneumatic transducer. This kind of thing would be used to turn a 4-20mA electrical signal into a some-number-of-PSI control air signal for a pneumatic actuator. When you upgrade the control system from pneumatic to electronic, this lets you do it without replacing all of the actuators at the same time. Some speculation here... Air would be supplied to the device and it would generate a control air "signal" of some pressure. I think the vent hole on the end of the tube would either bleed air out of the bellows, or, if the galvo pushed against it, cause pressure to accumulate within. When the pressure is at the desired level, the amount bled out would be the same as the amount entering in. The idea is that you only care about the spring constant of the bellows (i.e., x amount of pressure is y amount of deflection), and the deflection of the galvo (i.e., p amount of milliamps is q amount of deflection). The air pressure supply is what moves the bellows, such that the force on the galvo is quite low; the only thing the galvo has to do is provide enough force to close off the little nozzle or let it open.

[@torstenb5248]

You are right. Uncle Bumblefuck got this wrong. This one converts 4-20mA to (presumably) 0,2-1 bar of air pressure. That's also why its's reading "Current to Pressure". 0,2-1 bar is (at least the European) old standard for controlling valves in industry. Don't know wether there is an imperial equivalent to that.

[@red90rover98]

Yes. An I/P.

[@97whitesi]

3-15 psi

[@Smegheid]

The hint’s right there in the name, after all: current to air transducer.

[@deltamachine2059]

usbcd360. Fisher 3582 comes to mind

[@treverkirk8110]

Love these recent vids regarding industrial automation, keep em coming!

[@ToTheTopCrane]

I can't watch this channel while I'm at work. Operating a crane while laughing so hard that I'm crying, is no good! Thanks for the witty jokes Bumble!

[@GuyStran]

Glad to know I’m not the only one who spent his crane time watching this channel lol

[@ToTheTopCrane]

Guy Stran, are you a fellow crane operator?

[@ToTheTopCrane]

Kevin Jensen, welcome! Lol

[@gregjhill]

You’ve got it arse about! It’s a current to pressure converter ie 4 to 20ma into 3 to 15 PSI (0.2 to 1 Bar). A relic of the golden age of instrumentation!

[@bonjourmssr]

Greetings fellow instrumentalist

[@ResonantFreak]

You're cornfusing your guzintas and comzoutas. Current is your input signal, it changes the position on your magnet-coil doodad. That changes the distance between the tag end output of the cylinder and the little tube you pointed out. The bellows and the tube act together in a feedback loop to get your output air pressure.

[@enfield777]

These I/P convertors are top of the line. We have loads of them at the refinery i work at and rarely have one that fails. The newere Semi- electronical go bad all the time. The INC-INC and INC-DEC indicates the forward/reverse conversion of the current to air. Increase increase has 3 psi at 4 mA and rises to 15 psi for 20mA. Increase decrease has 15psi at 4mA and falls to 3psi at 20mA. You just turn the current motor 180° too use either one. This is very important when considering what failiure mode a control valve has te have.

[@garyrogers6761]

Why would anyone come to this channel to put a "thumbs down", everyone knows what this channel is, they come here feeling all righteous and get into it and then start feeling like a piano player in a brothel orchestra, then make themselves feel better by putting up the thumbs down. Grow a pair and enjoy the ride !!!!!

[@LazerLord10]

I've seen brass bellows like that in refrigerator controllers. They have a long tube that has air that gets cooled down, causing it to contract and de-chooch the switch to the compressor.

[@gh778jk]

My word.... I calibrated hundreds of these back when I still had all my hair.... Foxboro...brings back memories ! Paddy

[@rfpeace]

I was rummaging through some old tools at the swap meet and came across a bunch of different sized relay reed spring adjustment wrenches! Kinda of the same era, amazing how well that stuff actually worked!

[@chrisfreemesser]

1:18 OMFG that was epic

[@acwrobel1]

ANNND DEMONITIZED!

[@r.gilman4261]

I am glad to see that you have figured out how to get your camera to focus ( notice in post when you bring your hand up the part it obscures your bench background, it's the high contrast lines that confound the autofocus logic as they work on edge contrast)

[@slyknezz6862]

I freaking love your vocabulary and funny play on words man! Hilarious.. I dont know too much about this stuff but love watching just to hear you talk about everything. Keep up the good work!!

[@FnordOok]

Schneider Electric - Also owners of APC for those of us in the computer world where that name sounded rather familiar.

[@steampunkskunk3638]

They also bought out Clipsal in Australia. The quality of their products has dropped since then.

[@GordieGii]

They also own Telemecanique, another common (French) switch company. (limit, photo, prox)

[@recklessroges]

Router, switch, server and OS (linux+BSD) diversity... and then there is the APC practical monopoly. That's can't be good for any of us.

[@sunnyqueensland]

Million dollar titanium screwdriver sitting there being under-utilised...

[@metalminer7827]

Thanks for mentioning Electro BOOM channel he's crazy funny and you learn something, not unlike your self.

[@videolabguy]

9:10 It's a great big galvanometer. It moves the vane in response to input current. Not the other way round! The hollow tube will move until it touches the plate on the galvanometer. It translates the current input to air pressure output as it says on the unit.

[@samuellortie8783]

Yep, that looks like a I/P converter, probably from 4-20mA to 3-15psi to actuate a valve, thats why you have a supply port and an output port.

[@bonjourmssr]

You are correct. It's an I/P. They were set up for 4-20 or sometimes 10-50 mA coil

[@tehchaplian]

@AvE, Intrinsic Safety (or IS) is part of Class I, Div 1 and what vapors its rated for depend on the marking on the back. There is also Class II, Div 1 which is for combustible dusts. Div 2 is typically for areas that will see vapors/dusts in abnormal operation.

[@jackedup8790]

Great vid I love seeing that old stuff and learning a think or 2 about it.

[@awbrigham8191]

Loving it just for the 6.9 joke. Love to keep watching for the real info

[@collin371]

Noticed you said this was intrinisicly safe and listed a few applications for such a thing. Just wanted to mention that those applications use explosion proof devices, and are classified in electrical code. They are designed such that a flame inside the enclosure will not propigate and ignite the atmosphere outside. Intrinisicly safe devices are a little different, in that they contain too little internal electrical energy to generate a spark sufficient to ignite a hazardous atmosphere. Examples are portable radios and communication devices used in offshore drilling.

[@BackPainGarage]

Not only is this the best channel on the Boobtube, but you sir have hands down the best commentary. I can't tell you how much shit I've caught myself repeating without the slightest of thought about it. Sure did get a funny look or two yesterday when I loudly proclaimed "Ahhh for frogs snacks!"

[@AngeredKabar]

AvE we'll have to get you a Pratt and Whitney PT6. Fuel quantity and engine speed regulated by oil pressure, air pressure, governors, linkage rods. Purely mechanical and lots of it.

[@IdealGrain]

Hey! My own employer gets a shout out from AvE! Love it!

[@morgannahyde7502]

Scusa --- the label on the tin said current to air xducer. Looking at the air ports: "supply" and "out". So my impression is the current loop is the input, the little arm attached to the winding rotates bringing it closer to the nozzle of the pipe which throttles the air flowing out. The change of back pressure causes a change in the bellows and modulates a valve to give the 3-15 psi output.

[@morgannahyde7502]

Yep. I tappy taped before reading . And there's a bunch of like minded idiots out here in the digital weird. Was watching Bosch again or I coulda been a contenda.

[@Joe30pack]

Thanks for the shout out to the magical empire of La Casa De Gresa. I built that place with my own two sticky hands.

[@kasperabigail5998]

Joe 30 pack whats la casa de grasa?

[@Joe30pack]

My shop of grease and puke, the Spanish translation of "The grease house"

[@88ragtopturbo]

You regular viewers need to get over to Joe's channel and check him out. Found Joe about a week ago thanks to this vid and have been binge watching his old content since. He's got some great small engine tips and the guy is a riot. Big thanks to AvE for giving this guy a plug!

[@Joe30pack]

Thanks man! Glad you dig.

[@TheKurtChaney]

Thank you be Canadian bastard I've been working in the instrumentation industry for 12 years now and did not know how these functions because they're old and we really don't use them anymore but you describe it the best way anybody else has hell I'm qualified I/P instrument Guru now

[@andyreid7274]

That contrivence of mechanical, pneumatical, and electrical genius is 6 months older than me. Being more familiar with modern instruments, it astounds me how smart them old timers really were.

[@deltamachine2059]

See if you can get a hold of a fisher 3582. It is a I to p ( current to pressure,which I'm pretty sure this device is too) positioner for a control valve. Very cool little device, uses input current and translates it to pressure to place a valve in the position needed.

[@andronatroncoulomb9299]

Just did a bench set with an I/P for 4-20mA to 3-15psi with the upstream pressure at 3psi. Had to calibrate the valve to open at 6psi so around 8mA to open the valve and calibrate the travel for 1/4 inch travel with the remaining 8-20mA. So the flapper and nozzle are used to amplify the pneumatic signal to the pneumatic relay to get more or less air

[@williamleinonen4888]

The galvanometer pushes the flapper against the blow pipe to create pressure in the bellows which regulates the output pressure.

[@tallbrian100]

Current to air, so the coil is the prime mover that controls the air pressure. The coil is not the 4 to 20 output it takes the input.

[@petercollin5670]

Wow, I worked at the Foxboro plant for a couple of summers. The one in Massachusetts.

[@Romanamon]

Didn't realise how thirsty I was for another AvE video

[@johnelliott3866]

Fack! Thought this was This Old Tonys patreon

[@avoinc7707]

i farted on my fluke tester because of that last video.

[@samrafferty3599]

Foxboro I to P. Which is current 4ma to 20 ma input with 3-15 PSI output. you are missing the air amplifier on the bottom which converts the air signal from the flapper/nozzle to the 3-15 psi with enough flow to run a valve. full stroke on the flapper nozzle is 4/10000 of an inch. yes that is right ten thousands of an inch about the length your fingernails grow in an hour.

[@jamescorvett]

who needs a college degree when you have AvE at KZbin Diversity

[@davidmacglashan4206]

Laughed and reminisced back to when I was an apprentice and was taught by a Foxboro trainer how to calibrate a bourdon tube gauge. Intrinsically safe is one of the techniques used in electrical equipment for hazardous areas, not the generic name for all the techniques. It uses the limitation of energy within a circuit so it is below the minimum ignition energy of the hazardous material. Flameproof is another technique. This is a very interesting field of electrical works, may be a topic for future videos. Down here in Stralia (Australia) we use the european IEC 60079 standards these may be different to those used in Canada.

[@siriusking1647]

Perfect timing right after my instromentation test

[@jakelanier3279]

For about a smidge over 2 years now iv been watching your technical/ informative and just absolutely hilarious content! I’m 23 yrs old/ young in Lineman College! No BS but what bit of advice can you possibly give your shop audience/ myself with yourself having many trades as it shows!?

[@Finntheweekendwarrior]

I think this is changing what it reads in volts into air pressure? I can only assume being intrinsically safe its for oil and gas type of situations where they would use air to read? I don't know the plants i work on for the most part just crush rocks haha

[@chrisb4009]

I to P converters like this are used for valve positioners most often. They are still quite common.

[@nicholasfranks2616]

Wtf are you sure this is not a I to P , ??? You give it 4 to 20 ma and it converts it to a air pressure... The typical is 3 to 15 psi but there is other ranges.

[@adampetten1009]

This looked like an I to p, if he used a 4-20 source the arm should have moved

[@o_-_o]

the period... the period joke own its own is worth a million thumbs up.

[@romangudev8770]

I think the leads that were gnarled up might have some torn fibers. Maybe trimming the damage off and supplying power could fix the issue?

[@BustedWalletGarage]

AvE and Zip Ties n Bias Plies release videos on the same day , coincidence ? I thunk not.

[@MegaCountach]

Good one AvE! Happy Trails

[@loganlachance1890]

Will you ever do a boltr on the Bridgeport milling machine? I would love to see that.

[@dytch2220]

How can I get on the waiting list for one of them titanium screwdrivers?

[@shaneomacmcgee]

Rotating the coil to a different position didn't seem to make a difference in current, but moving it back and forth did. Would the air causing the coil to oscillate induce a current proportional to the airflow?

[@Alexander_Sannikov]

changing magnetic flux through a coil does not change its impedance. it creates potential difference though that can be measured.

[@MikeCookie1973]

I like me some P+F. Even more that E+H / Emerson. Class 1 is for flammable materials, which includes flammable vapors in air. Class 2 is for flammable dust. Division 1 is when the hazard is often or usually present. Division 2 is when hazardous conditions are the result of abnormal circumstances. There is a big difference (money and mass) between Div 1 and Div 2. Div 1 is often associated with wiring in conduit, and the conduit joints are packed (with ceramic or paste) to create an airtight seal. Intrinsically safe (IS) and explosion proof (ex or exp) are also 2 different beasts. Explosion proof has thick walls that will contain an explosion. IS is designed to operate at a voltage level low enough to prevent arcing.

[@waynepetrevan]

We used to call them I to P's. I liked the ones Moore Instruments made back in the day. USed to use Foxborough too, worked in the office next door to them for a while.

[@CripSkillz]

That was cool to see for sure!

[@NurchOK]

This maybe a shot in the dark, but that springy thing that you initially called a switch might be there to cause the coil to vibrate around the permanent magnet, then the diodes on the other side rectify it. Perhaps it requires additional external components (maybe just a capacitor or something) to condition the signal a bit. I dunno, man :)

[@bonjourmssr]

Nah he buggered up again. I to P, meaning the current in gets the coil to control flapper nozzle pressure, causing regulation of air pressure into an output range of 3-15psi, one of the pressure range standards used for valve control, pneumatic signalling/charting, etc

[@bonjourmssr]

Nah he buggered up again. I to P, meaning the current in gets the coil to control flapper nozzle pressure, causing regulation of air pressure into an output range of 3-15psi, one of the pressure range standards used for valve control, pneumatic signalling/charting, etc

[@usethenoodle]

"Focus YOU FUCK!" I love that... I find myself saying it every time something isn't working... hey it beats throwing it across the room!

[@wacabby]

Did you raid the supply cabinet at the BCIT industrial instrumentation lab ? Do the Fox 40 next !

[@ryanlaney9478]

That is an I to p as in current to pressure. It take a supply pressure, a 4 to 20ma current and puts out a given amount of pressure. So 4ma would b 25psi and 20ma would b 35psi. This would be for feeding a regular of some sort

[@captainmidnite93]

After 69 is 96 when y'all roll over and pass out...

[@kubeek]

static magnetic field will not change the impedance of that coil. Definitely not its DC resistance, and since it is air-core coil not even the AC impedance. Not sure on what principle it is supposed to work, but does not look like it can do anything to regulate the current to 4-20mA.

[@arduinoversusevil2025]

Ja, must need to be connected to a "transmitter" module. Tag says 4-20mA output. ?

[@arduinoversusevil2025]

WHOOOAAA MAN! IT WORKS IN REVERSE! I takes current input and OUTPUTS pneumatic signal!

[@n2kbg]

It does say that in the label after all...

[@tjarsun]

1:25 That's why your videos are great!

[@stevec5000]

Foxboro is from Foxborough, Massachusetts. They used to be a competitor of Honeywell.

[@TheMercenary995x]

Can you please take apart a gen 5x ridgid impact wrench. In on the fence about buying one. Many thanks from the states!

[@johnlehman2157]

It could be 4-20 ma input to control the air pressure output. That would make the coil magnet assy a lmeter movement.

[@deformedjeff]

Fisher price! That made me laugh!

[@andrewkennedy9704]

Daniel Mott fister price.😉

[@GordieGii]

No ambition! Fister thrice.

[@eccentricelectrician1904]

I love the old i/p converters. They can be used to turn pneumatic controllers into electronicaly controlled from a dcs or plc. Nowadays though they are typically integrated into smart controllers which do the whole lot but are impossible to repair or fault find. I cut my teeth on these as an apprentice.

[@gordonlawrence4749]

very interesting. I keep thinking now how you'd do the signal conditioning for that without it getting too complicated using 1970's tech. The 741 would have too much temp drift for starters.

[@helnoSA]

Use the 741 as a current driver.

[@gordonlawrence4749]

You cant for the reason I highlighted above. IE stupid amounts of temperature drift. The input offset drifts all over the place so you cant just trim it out.

[@AmateurRedneckWorkshop]

Gee for a moment there I got all nostalgic and wanted to go back to werk. Not.

[@arduinoversusevil2025]

Do you retire from EvilPlasticPolutionOmniCorp or does EvilPlasticPolutionOmniCorp retire you?

[@AmateurRedneckWorkshop]

Yes EvilPlasticPolutionOmniCorp has a good retirement plan. I got to be 66 and did not wait to grab my retirement. I even developed a bad attitude the last 6 months. You ever wait that last 6 months? Feels like a couple of years.

[@TractorWrangler01]

Nice. You can tell at a glance that it wasnt made in China. It's beautiful workmanship.

[@poptartmcjelly7054]

University equipment or any institution equipment for that matter cannot be written off for as long as it has any resale value, regardless whether it's broken or not. That's why the NF(G) sticker was so old.

[@jeffbennett2271]

would you be interested in some late 50's early 60's aviation parts for boltr's?

[@julianpiper240]

1:10 ahhh your jokes man, BRILLIANT

[@maxheadflow]

t's a current to pressure device, not pressure to current. IIRC you read it correct but ignored what it said.. :-) it's in a system that uses fluid on some static system. Maybe to control clamping pressure for a brake?

[@triden55]

Schneider bought Foxboro for their market. 40% of oil and gas baby! They also have a very renowned DCS

[@bstrickler]

Didn't you post this a little while ago? I remember you tearing it down recently.

[@morzinbo]

The nice part about being demonetized is that we get to watch your content while also giving $0 to KZbin.

[@allensbud]

OMG that bayonet joke😂 I love you AvE no homo.

[@64CadDeville]

1:18 Anytime 69 and period are mentioned in the same breath, you will always have EVERYBODY'S ATTENTION. lol

[@blipco5]

You should check out the old pneumatic fire alarm systems.

[@nealk6387]

Ave, please show how an encoder or resolver reads the position of the rotor in a servo motor by using your o-scope.

[@chrisdiver5100]

Hey man! I’m in Montreal working for a few weeks, first time in Canada. Only got a weekend off for doing the tourist routine, any suggestions on what to do?

[@painkillersclan]

Poutine, thank me later.

[@GordieGii]

Smoked meat. Not Montreal STYLE. Real Montreal smoked meat. (sadly can't get speck anymore. I think they made it illegal) And bagels. If you're into cathedrals there's a few around to see and a museum up on the mountain. There's some funky architecture down around the old Expo '67 site and an Olympic stadium. BTW in case you haven't been warned or figured it out yet, start every conversation with "Parlez-vous anglais, s’il vous plait" (par-lay on-glay see voo play) It's amazing how many people don't know English if you assume.

[@MarkProffitt]

What is the cheapest way to measure air flow?

[@WatchWesWork]

Schneider spawned the Num CNC controls. That's all I have to say about that...

[@landon400000]

Thanks for the link at the end! gave a sub

[@dalehorton7748]

If you're regulating the current going in, you're always going to get the same current going through, regardless of the impedance. You should be inputting current and measuring voltage, or regulating voltage and measuring current.

[@helnoSA]

You just input current. There are no further electrical measurements to make on a force motor like this. The controller outputs a 4-20 mA signal and this converts that into a 3-15 psi output which goes to a pneumatic valve.

[@alexk_1219]

Can you do a video on taking apart an old Generac portable Generator?

[@tb2187]

How do you decide when it’s a treat especial or not?

[@TheAdminist]

0:00 best intro EVER!

[@MatthewBallinger]

A constant magnetic field does not affect impedance.

[@arduinoversusevil2025]

But its not constant through the diameter.

[@P0LARice]

Peps and fuckers make some fucking unbelievably great stuff! I personally can't wait for you to destroy my fanboy love of their stuff. Your dismantling of Fluke has me asking questions of brands I know and love, which I believe is the ultimate aim of your channel! I am still smarting about Fluke though because I am an Electrichicken.

[@piousminion7822]

I must have that screwdriver. Any word on that video for what explains how we can get 'em made?

[@bugglemagnum6213]

Did you unpublish this and just put it back? Notification 4 minutes ago comments from 5 days ago?

[@azwrenchmaster5334]

So, in North Amerikanistan, it's basically an air pressure regulator/controller...you know, like a sprinkler valve choocher?

[@keithjurena9319]

I worked for a company that made those bellows. Dime a dozen. Dirt cheap but precise little things for pressure measurement when properly implemented. Still have a few in my box of salvation

[@xorith]

Out of curiosity - even if you get demonetized, do you make anything from those of us who subscribe to RedTube? I mean KZbin Red? Always get those confused.