Another mystery item from the storage bunker.
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Hi, I've got a random tear-down item from the bunker for you today and well, you have a guess what this is anyone. Bueller Beulah beulah. We have a bit of, um, like the scientific analysis equipment. It's a Vitatron isp.

Um, yeah, good luck trying to find any uh info on this thing, but I could find a bit of information on another model. the Vitatron Mcp. Um, and for Vitatron's a company from the Netherlands? Hi to all my Netherlands, uh, viewers who, um, apparently like their they normally do, uh, cardiac, you know, stuff. pacemakers, things like that I don't believe.

like they think they've now been bought out by medtronics or something like that. But anyway, this is an old bit of kit. probably comes from the uh, 1980s and what it is is a spectrophotometer and what that means is that, Well, you put stuff in here because it's got, uh, some sort of, uh, tube on here. Um, obviously you put in some sort of liquid and then there'll be a container inside and what it does is basically um, shoots a certain spectrum of light.

Hence why we've got 340 here. and that's why we've got different 330 to 500 nanometer and 500 to 1000 nanometer ranges here. Um, we can. I'll show you these in a minute.

these are filters. It basically puts a certain spectrum of light through the sample under test. In this case, I believe it's liquid. um, inside, obviously some sort of clear like test tubey thing inside it.

and then it measures the transmittance of the light that goes through the liquid. I.e what comes out and also are these spectrophotometers. They can also do absorbance as well. so you can do transmittance which is what passes through of the substance under test and then absorption.

What stuff uh is or how much of the light is actually absorbed by the uh sample under test. But this one. Check it out. Yeah, we've got temperature, so obviously it's got an internal heater.

You can heat up the little i presume test tube inside. I don't know, I haven't opened this thing. Um, you can set the volume or whatever. You can flush it out.

Uh, you can prime it with uh, you know, actually sucking the stuff and um, it's is this a Yep, there we go. That's an output port. I hadn't taken that off before. Oh no, that's A.

that's a switch so I don't know. Does that? Um, yeah, that pumps it. I thought you know that might be a knob or another a cap for like another tube. I'm not sure where it actually comes out of anyway.

so that's obviously some sort of test button. and uh. two different measurement ranges here. And as I said, these spectrophotometers, You can actually do them using several ways.

One is to use a Uh prism which uh, you know you tilt the uh prism and of course you know you used to. You put white light into the prism and then the you know the spectrum. The whole spectrum comes out of the Uh prism, so you can then tilt the prism. uh, and then you can choose a specific spectrum of light.
The other way to do it is to use a filter like this. So this is obviously 340 nanometers so it looks a bit grubby on that side, doesn't it? Um, but it does come with a whole bunch of other filters up the top here. and then it'll It's got an Lcd. I presume.

it'll display the magnitude of the light coming through. I don't exactly know. If you've got any details about this, you've got a manual or something. Please leave in the comments down below cause I couldn't readily find anything.

Anyway, it's got kinetic end point, two point measuring, time delay factor, standard reagent sample blank I yeah, we don't know. Anyway, it's got a little thermal printer inbuilt as well. Geez, that looks a bit crusty, doesn't it? There you go, and really, there's not much else to it. If you have a look on the Uh back side here, There you go.

The Vitatron is P Serial number four 374. if they only made 374 of them fourth batch I don't know. Um, yeah, then the Netherlands made in the nether regions. Fantastic.

Uh, it's got remote control stuff and just uh. 240 volt power input and that's it. I'm not going to power to this empower. Bother powering this thing up? I don't particularly care, we just want to see inside it.

and here's all the different filters it comes with. from 660 nanometers down to 340 nanometers. And yeah, they're very cool. So yeah, these are keepers.

Um, even if the rest of them, uh, isn't So let's go to 660 there. So obviously, um, you shine it through and please leave it in the comments if you know what. uh, sort of material that is. I'm not sure like of the bandwidth of these uh, filters.

how like narrow they are and everything else. So because like, there's not much difference there between like 540 and 546. geez, you know, so that's got to be really narrow. Um, so it's got to be like like one or two nanometers look very different colors.

Check that out. between 540 and 546. Yeah, that's showing up on camera. Yep, yep, that's very green.

If I get that in the light, they are quite different even though they're only six nanometers apart. Wow, right. So let's just try this 660 nanometer with a red, uh laser pointer from my uh, infrared uh thermometer here. and does it get yeah it? yeah.

it gets through There you go because this would be about six. Oh, does it tell us on here? Uh, 630 to 670? Yep, 630 to 670. So yeah, no surprises finding that gets through. Will it get through 630? No.

barely. hang on. No. I'm doing this in the dark and I can't see that.

No, that's not getting through. So nice. 6 30. It's even at 6 30 nominal like range on here.

No, it's not. It's cut off. So yeah, you gotta wonder, like how much these uh, filters cost each? I don't know. and I I reckon they've got to be like four digits each or something like that.

Probably how much does the machine cost? I don't know. Leave it in the comments down below if you got any clue. As is common with these things, Um, yeah. they're pretty easy to get into.
This front cover doesn't even have any screws. just, uh. take it off. So I guess it's designed to be.

I don't know. adjustable. Is that an adjustment there? Um, perhaps. Anyway, check it.

Look. then. check out all the trim pots. Somebody's numbered all of these, uh, trim pots.

But we do have a little, uh, schematic diagram here. So there's our sample over there. and these are. I guess these are part numbers.

Are they? I guess they would be. Um. anyway, there's a flow cell. Uh, there's a valve of course.

and there's a pump and there's a waste thing. So I look, I got no idea. but there's only one. There's only one port on this.

um, which is this here? so that's actually buggering off somewhere else inside and these so is that our valve and that's our pump over there. So oh, that was that was off. So yeah, I'm uh, you know, just got wires flapping around in the breeze in here. I'm not.

You know, it's all about how you're doing. Yeah, these things aren't like are not designed for like really mass production. So yeah, they only sell like hundreds of these. This is actually exactly what I expected.

inside. expected just to see a like a little like halogen lamp or something like a broad spectrum uh lamp. And there you go. It's mounted on a little ceramic uh, base there.

so it just it just generates a light and then it passes through here. And this section here is where you plug the filter in from the front. So obviously your broad spectrum light goes in here and then your uh, narrow bandwidth light of your specified uh filter goes through to whatever's under there. The you know there's some sort of, uh, you know, calibrated photo sensor.

Yes, it has cleaning instructions on top. Okay, I got five screws off the bottom and hopefully that, yep, that just lifts off. No wackers. Yeah, it's just mostly a main board.

Wow. Big power training. Look at that. That is enormous.

Um, and where's our sample? Is that Our sample collection chamber down there? Because I haven't seen that yet. The sample collection chamber. but um, anyway, I mean, just look at the size of this thing. Was that absolutely necessary? I mean, that is enormous, So that's pretty much what I expected uh to find in here.

There we go. There's all the uh, local regulation that there are just tying to a little heatsink block there, which goes down to the chassis. so they're using that for dissipation. And we've got our eproms.

What processor have we got? Ceramic Jobby? Well, that's one we haven't seen before. And Am 9080 Adc. Apparently this is a Amd's equivalent to Oh, Copyright 1977 Amd. This is, um, Amd's version of the 8080 Uh.

processor. So it's an 8080 compatible processor. Wow. Anyway, so that's 1977, But what's the actual date? Oh yeah, 38th Week 79.
Wow. The rest of it doesn't look that old. Yeah, we're talking 82 for the Roms. So yep, early 80s.

but other parts of the surgery? Yeah. 8414. So yeah, it's definitely manufactured at least 1984 onwards. possibly uh, 85.

But it's still using. And because they were locked in in into the design and they're not going to upgrade it, they're just going to keep manufacturing this thing. So yeah, they had to use an original part from the 38th week 1979. um, like five years later.

So they had to use like, you know, four or five year old uh, stock of Uh processors to get this puppy working. Oh, made in Germany? Oh, made in my West Germany? Not that East German rubbish. Um Elko. Sure, I'm not pronouncing that correctly, but oh, beautiful voltage reference for those playing log at home down there.

What Is it? An 8584 once again? Uh yeah. Third, that was uh, that was brand new Ski so 37th week 84 so they would have got that fresh off the production line and the other devices in here handily marked Op2. So Op Amp and Comp one that would be comparator and Op1 is over there as well. So using the metal can packages, Very nice.

So yeah, you can see that this design, uh, dates from like the late 70s, like early 80s? So yeah, and Noah, you know, the designer of this thing was probably, you know, familiar with the 8080. So they kept on. Even if it was designed in the early 80s, there's better processors around. Um, but yeah, bugger still got the development system.

got all the knowledge for the 8080? Just keep on using the 8080.. no worries. Yeah, so that's actually the first time that I've seen, uh, these type of designators that actually separate. You know, usually sometimes you get them.

You know, like like ref is common? Uh, of course. but I don't think I've ever seen Op2 for Op Amp, cop one for comparator, and then Ic for your digital, uh, logic. And um, Fs2, what's Fs2? That's an intercell? Uh, what A th4o1? What on earth is that? Well, I've no idea what an intercell. Ih4o1 is.

Not a clue. Serial number sticker aficionados. there you go. Vitatron? Sc.

uh, that's the mod, so it's had Mod B done there. Serial number 4-12 right? So there's nothing else really interesting on the uh. Pcb. So of course uh we the interesting stuff is in what's happening with uh this.

but it's just, you know, some pumps. I still don't know where the oh okay, oh there's the tube going out the back panel. Okay, I was wondering where the other uh port was I yeah I yeah, I totally missed the port on the back. It wasn't even labeled.

it wasn't even labeled. So yeah. easy to miss. So yeah, I think that this is the this is the pump.

This is the valve according to the diagram. that's the valve, that's the pump. Um, so that yeah uh. and then the flow cell.
And where's the where's the sample? Like I? it's got to be. I don't know. Buried in there somewhere, there's the Pcb for down inside Lm324s. Um yeah.

Op07s are they uh Op amps? uh some tag Green green tag tents. Wow. I I'm stretching my brain. Have I seen a green tag tent before? I j like it's just not ringing a bell.

They just like stand out. uh that's like that's not in the comments. green green tag tents. Wow.

I think that ribbon cable going off there is going to all the switches on the front panel. I think. I don't think that's uh so. and yet there's actually another cable right down the bottom of the board which goes over the main uh processor board.

So that's probably the heater controller because I'm not sure if you can see, but right down in there got some big power transistors right down the bottom. So there are are they tip jobbies? Yep, tip something or other. So they're obviously doing uh to regulate the the heater which regulates the uh heating element which is in the sample which is in there somewhere. I still can't see it.

There you go, That's a better look at the uh control board. Oh, one of them's a bit bit hairy. scary isn't it? Oh wow, that's got some crud on it. Um, is that sample crud? Love it.

But anyway, yeah, there you go. Um, so that's just some sort of obviously uh, heater controller. I like the uh and check this out. I'm not sure I've ever seen that It's a right angle diode bridge.

right angle panel mount diode bridge that actually looks like the leads have been formed. No, I thought that was that like factory. I think it's just a standard one and they've just like custom bent the leads over like that to make it to make it into a panel mount. Right angle job.

Nice work. and there's another voltage reference on there as well by the looks of it. And yeah, that's about all she wrote. Yeah, it's doing lots of uh, analogy goodness, isn't it? Some grey bearded nude virgin has trimmed all those, and then they've sealed them, gunked them up.

Somebody had a hack on those uh joints there? maybe? and check it out. Different color around there, like that? It's It's almost as if it's like it's discolored. Um, it. I don't think it's an internal layer and it kind of looks weird.

It just doesn't look like sharply formed like an internal layer, right? So obviously our sample is in here because here's our light source. There's a window. our filter plugs into this slot here. So this block back here has got to be the filter and then this over on the other side with ta-da Yes, I was going to say it must have a like a shielded cable coming off it.

with that would be their uh, photo sensor. Whatever it is they're using in there. um and maybe there's a little, uh, could be a bought little board in there, little uh, preamp or something like that. But anyway, wire and that goes over to um, the board we just saw here.
So yep, that's our sensor and the rest of it's just all mechanical. You know, flow, getting the stuff to flow in and out as the uh, sample vial in there. I don't really know what's going on here, but this motor on top here. this actually drives this drive down here.

and then this bug is off. Ah that's a that looks like it's an encoder on the other side. I'll show you that down there. There you go, There you go.

That's Silver Joby that looks like a shaft encoder to tell it after there's a cable running off on the bottom. You can't actually see it. but it's it's yeah, it's going off there. it is down the bottom.

So it's uh, it's buggering off somewhere. So I'd say that, um, well, it's no. it could be vice versa. That could be a little mode that could be a motor and then driving that car, the big white cog on the bottom in there, which then drives this.

Uh yeah, yes, yes, yes it is. because um, yeah, because this is not a motor. sorry. This is, uh, has the fluid coming in here.

so that's uh, that's part of the pump. You've got a couple of micro switches down here and I'm not sure when they ever come on because there's nothing that doesn't. I don't think there's anything around that shaft to poke out and turn them on, so I'm not sure what the deal is. Wow, Believe it or not, that looks like the photo sensor.

Um, I just pulled that out at the side. there. I wonder what the So yeah? that does not seem right. So uh, there's some sort of temperature sensor perhaps? and the actual photo sensor is deeper down inside there on the back side or something because that doesn't look like a photo sensor.

Aha, found it. There's our photo sensor. Yeah, that's what we're talking about. Big.

That'd be one big ass, expensive, calibrated beastie with a coax uh going off here. And yeah, I didn't spot the coax going over to the main board over there. So yeah, there you go. That's our photo sensor.

So that would have the range from at least you know, 300 nanometers to a thousand and you know it'd be fully characterized. So they'd know the uh response of it, whether or not like they could be factory selected, factory, uh, calibrated. and then I don't know if the calibration information is then programmed into the roms on this thing so it can compensate. So yes, you probably have to like calibrate for a non-flat response or something, so I'm sure that.

But if anyone actually absolutely knows, let us know in the comments. And there's our super advanced range switch. and there it is. That's it.

Love the little spring at the bottom that's a that's a nice touch, gives it gives it a really good feel and that just brings in two different windows. That's all. That's all it does. They don't line up though.

they're not precisely lined up to the same point where, oh yes, they do. I thought they didn't From the angle up there, it looked like they didn't But yet, they obviously switch into the same point there. So uh yeah, light just passes through the sample. uh, through one of these range filters.
I guess we'll call them. and then on to the uh, the photo sensor. There we go. we're peeling back the layers.

So our sample vial is this block here. and that's the that's the window that it comes out of. So whether or not this thing does any uh absorption measurement, I'm not sure. Anyway, those red and black wires down in there.

I would say they're the heater element. This tube going in is it's a really small. I think it's a small uh element. But anyway, yeah, that'd be the heating element.

There'd be a temperature probe coming out of there. I see another wire at the bottom. Okay, it looks like this was actually designed to come out from the top. Uh yeah, yeah, it's designed to come out.

So there's our sample as our sample vial. Uh, to what comes out? Yeah, I'm not sure what the deal is. Oh oh yeah, that's that. Oh yeah, that was that.

Uh yeah. That was that thermocouple that we pulled out. Yep, there it is. That was our.

That was our thermocouple. uh, plug. which, uh, pulled out of there. So there you go.

So as I said, uh, the red and black wires. There would be the uh, heating elements for that puppy. And there's just like a vile. You know, a tiny little vibe I was expecting.

You know, a diagram shows like a big vial thing. But no, it's it's just a. it's just a tiny little block there. That's it.

So there you go. That's actually it. I took the plate off either side. I can't get that out of there.

but uh, that. that's your entire sample vial. And there's your like your two little itty bitty tubes, one one going in, one coming out and that's that's it. Um, so yeah, that's that.

It's like a got a heater block and and which. Yeah, I expected some big vial and I know, quite disappointed. So there you go. That's it.

There's not really much else to show that's a uh spectrum photometer and it's just designed to like measure the light that passes through, uh, the sample, whatever liquid you put in. So if you've got any idea, um, if you're into the recent side of things flapping around in the breeze, there you're in the researcher side of things and you use, um, these things and then please let us know, um, typical usage things, I'm sure I could go look them up, but I, you know, what's the point. Anyway, well, that's a big ass fan on there isn't it for the big ass transformer. I mean, look at it.

that's a holy. It's got iron on it. I'm sure there's a lot of iron in there. Check that out.

That's just a monster. I didn't expect that. So yeah, that is fascinating. All these um, special purpose, uh, scientific type instruments designed for to do one job and I'm sure it cost.
You know? I don't know. Five, ten thousand dollars or something, does it How much do all these, uh, these nice filters cost? These are a keeper. These are an absolute keeper. I might.

you know, you never know when you need a specific wavelength filter like that. And if you've got any information on those, like the bandwidth of these things because I think they're going to be quite narrow because like you know, there's only six nanometers apart there. So yeah, quite remarkable. So anyway, I hope you enjoyed that just, uh, random mystery bunker item tear down.

If you did, give it a big thumbs up, you know, subscribe all that sort of stuff. Check out my alternative platforms, you know what to do. Catch you next time you.

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By YTB

21 thoughts on “Eevblog #1366 – mystery bunker item teardown”
  1. Avataaar/Circle Created with python_avatars Darren says:

    I think the filters could be sputter coated silicon. Ben on Applied Science has done a video on similar filters.

  2. Avataaar/Circle Created with python_avatars Jakob says:

    That was a fast video only 3 minutes, well done Dave and you even landed – unsub..
    The moment he said he would not even try to turn it on while going through its features and purpose…it was oh boi, not one of those again, and yep a fast jump through it and no attempt to actually check the unit in function.

  3. Avataaar/Circle Created with python_avatars Allayna Wilson says:

    that encrusted diode or vreg (the one you suspected is sample crud) that looks suspiciously like tin whiskers

  4. Avataaar/Circle Created with python_avatars No_You_Can't says:

    Can’t find any good info on it but ISP is an acronym for Infrared Spectrophotometer. Found that in an acronym dictionary

  5. Avataaar/Circle Created with python_avatars Alex Novickis says:

    I don't want to mention companies by name but just search for "bandpass optical filters", I've run into these before when playing with tunable laser cavities (in my case argon ion) and spectrometry and now lidar – they are also very useful for playing blocking an excitation light source for fluorescence microscopy- and BW can be below 1nm, basically it all depends on thickness of deposited metal and uniformity of the thickness

  6. Avataaar/Circle Created with python_avatars Svein Erik says:

    We had some equipment at work with similar filters, just mirrors instead of windows. These filters costs thousands and thousands of dollars.

  7. Avataaar/Circle Created with python_avatars David Chang-Yen says:

    Those solenoid Neptune Research valves last forever if you don’t overheat them. Still made under the Cole-Parmer name.

  8. Avataaar/Circle Created with python_avatars n/a n/a says:

    If it's from a bunker then it likely has to do with Chemical & Bio weapons, or for testing for fallout.

  9. Avataaar/Circle Created with python_avatars Wilson says:

    Dave, please take that thing further apart, I just love this old devices, how they developed devices, on the one side extremely smart and kinda barbaric on the other side at the same time. A while ago me and my dad took apart an old stereosystem, this thing had so many solenoids and motors inside, it was actually a robot, if you love technology, you need to love this old stuff. Man I just love the fact that you still have this "childish" curiosity in your age, never give up on that and infect your kids with it.

  10. Avataaar/Circle Created with python_avatars CaptainDuckman says:

    why buy an expensive high speed CPU and redesign the entire machine when existing cheaper units are available and do the job quite well enough?
    This was not a piece of equipment for teens and tweens to brag about who has the biggest and baddest gaming rig after all.

    We were in the Netherlands at least still using 8086 based PCs in college back in the early/mid 1990s too, despite 80386s being available.

  11. Avataaar/Circle Created with python_avatars CaptainDuckman says:

    gosh, I grew up not 20km from the town this thing was made. Never knew they had high tech medical equipment companies there.

  12. Avataaar/Circle Created with python_avatars Enan T says:

    You're giving this thing a bit more credit than it is due. For the photosensor, you don't really need to do much characterization. The calibration is typically going to be done in situ at the start of every day. Generally you'll use Beer's Law (no really) to assume absorption is linearly related to concentration of whatever you're looking for. It is still good stuff. Spectrophotometers haven't changed a whole lot over the years. Light sources are where it's at. The common ones are going to be tungsten lamps, if you're doing UV then deuterium, xenon arc is also fairly common.

  13. Avataaar/Circle Created with python_avatars Rob Cosentino says:

    I have something I got from an Audiologist I'd love to send you but, it would probably cost me over $100 at least to send it. I think it would make a great teardown. Maybe I can get a collection going.

  14. Avataaar/Circle Created with python_avatars Immortalist says:

    Wow, that thing will require quite a large amount of sample… Does anyone know why they used such a flow-through device and not a cuvette one? These days plate readers are the most common type. These take 96/384 well plates. For DNA/RNA and bacterial cell cultures the most common type is the nanodrop that takes a 1-2 µL droplet.

  15. Avataaar/Circle Created with python_avatars Trevor Clarke says:

    the filters are likely a Fabry-Perot style filter. A stack of λ/4 stacks like in a standard thin film filter but with a cavity between them which is n-λ thick. The light reflects around the cavity and constructively interferes creating a very narrow passband. The thin film layers create a stop band around it for a 100 or so nm. The remaining light passes and is either block by a wide-band filter or ignored because the detector isn't sensitive to it.

  16. Avataaar/Circle Created with python_avatars Wilco Stienezen says:

    Hi Dave, yes I know vitatron. It was a company 20 km from my home. There where 2 company's. One who is made pacemakers the other one manufacturer and distributor of clinical laboratory instrumentation. I worked there for 6 month.

  17. Avataaar/Circle Created with python_avatars Hola! Matthew Suffidy says:

    Those 2 filters probably let almost the same colour of light through, just they have some different surface treatments. Your eyes really see 3 em colour bands, and any other colour than red green or blue is just your mind responding to there being more than one.

  18. Avataaar/Circle Created with python_avatars Ray Ceeya says:

    The discoloration of the PCB board is probably from exposure to the lamp itself. Those bulbs are very bright and extremely expensive.

  19. Avataaar/Circle Created with python_avatars Ray Ceeya says:

    It's actually a bit newer than the specs I learned on in college. I'm not that old, my school was just severely underfunded because 'Merica.

  20. Avataaar/Circle Created with python_avatars imark7777777 says:

    The discoloration on that circuit board is most likely due to the UV put off by that internal light. Surprised they didn't Shield it.

  21. Avataaar/Circle Created with python_avatars SeanBZA says:

    The big transformer is needed for the peltier element heaters, so likely there is a model which not only can heat the sample, but also cool it. You need a beefy power supply to enable fast heating, as you might have a sample barely defrosted, and need to get it to the reaction temperature for whatever reagents you are using, typically anything from 30C to 70C, plus you will have a cleaning cycle, where the heaters will need to get the cleaning solution up to 90C to properly scrub the cell windows clean. Same for the pump, massive with the need to pump the cleaning solution through turbulently for cleaning scrub action, but then has to flow through the analysis solution slowly.

    Quick test to see how narrow the filters are is to shine light through the 2 close ones, you will probably find nothing out the other side.

    Pump uses the motor, controlling motor speed and using the microswitches as limit sensors, so it runs one way till it hits an end, then runs the other way to the other switch, so you can have a calibrated volume of fluid per stroke, and also adjust motor speed to do flow control from fast to slow. Valve allows the sample chamber to be isolated, so the volume reacting will not move. Adjustable filters probably there so you can choose a band for the photocell to get the fluorescing of the sample, as these typically use a reagent that either absorbs light depending on the reaction, or which emit light when excited, so that you need to remove the excitation light to get a result that is the emitted light from the sample only. Thus 2 ranges, depending on the selected excitation, so the filter response does not allow light through giving an offset. Going to guess the entire sample volume is made from ground quartz glass plate and tube, that has been sintered together, and the sample tubes are PTFE that has been press fitted into ground openings, and backfilled with an epoxy for rigidity.

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