Ya doodles I only ever "like" videos and I always like videos for people I subscribe to in order to help them out in the Google algorithm. So I usually press thumbs up as soon as I start watching so that I don't forget by the time the video ends and starts loading the next one.
Cody, I work with vacuum systems in my research. Some of these gauges based on convection heat transfer need to be maintained in a certain orientation for proper measurement. You may want to check with the manufacturer to see if this one needs to be maintained in a certain orientation.
That 10% even makes the machine wrong. When it is reading values like 15450 micron, 10% of that would be 1545 micron. That makes the last 4 digits of the mesurment compeletelly redundant and misleading.
You could solder a reed switch on wires to the pads for the power button and use a magnet to toggle it. Or you could use a thermistor and a laser pointer.
I like how you point out the things that the Patreon money is going to. It's a nice honest-feeling way to remind folks that it's a thing. Worked on me!
It will not start reading until it gets to about 25,400 microns, which is about 1 in. of mercury of atmospheric pressure left. This gauge is used a lot the HVAC-R field for us to pull down a 500 micron to dehydrate our systems. To my knowledge, there is no way to remove the 5 minute shutdown. We use these vacuum gauges to read the system directly via a schrader core, or our manifold gauges, and obviously the shutdown feature is there to save battery life, because we can simply turn it right back on. Used this specific vacuum gauge for awhile, and various other ones for 25 years now.
As an HVAC tech and happen to use that same gauge and a couple others like it. You will have to add a 1/4" adapter to the out side of your chamber to maintain accurate readings and yes to turn it backnon as it turns itself off. Yellow Jacket make a better one that the auto off can be disabled.
Don't worry, I think Cody will know what to do with our money! I think that I have received my money's worth a long time ago, watching his videos all this time...
Hey, I hope you see this, Cody! I bought a high vacuum system with a roughing pump, turbomolecular pump, all of the gagues AND the instruments to read them (thermocouple gague and parani gague, automated valves...the works! Only problem is I live in Taiwan (and I already have other components for a system, just not all put together yet) and I think shipping it here would take forever. I don't know if I will stay here forever, so if you want, in the meantime (probably at least a year?) you can totally use it for all sorts of awesome stuff! It is in Denver right now, so if we can find a way to get it to you its cool if you use it for anything!
No no no. This sucks +- 10% is way too much and having it inside is bad idea since you do crazy stuff inside chamber. You can use second camera on tripod to focus on gauge and make small overlay over main video.
Hey Cody, that sounds like a GPU problem. Your power supply may not be enough to support the power necessary to run the graphics card. I would recommend looking into your necessary wattage for your rig as well as the maximum output from your PSU and adjust accordingly (with the obvious solution being a newer, more powerful PSU). PM me if you'd like some help troubleshooting!
seems like Cody has a poor PC i don't think his GPU needs much at stress, running out of RAM especially if he is using adobe premiere is very likely though
It isn't warming up for 3 minutes. It doesn't read anything until you only have 1 in of mercury of atmospheric pressure left. It doesn't read until you have 25,400 microns because the gauge is used in the HVAC field, and we don't care about anything above that. Shuts down at after 5 minutes to save battery life, because we never use it INSIDE a vacuum, we use it to read a vacuum in our refrigeration systems.
I work with micron gauges everyday in the line of work I do. In HVAC when we vacuum your copper line set we have to pull to a minimum of 500 microns by law. if your having issues pulling a deeper vacuum change out your vacuum pump oil IT IS hydroscopic. Also take your new vacuum pump oil and grease any threads on your hoses and connectors to reduce leaking.
Also I assure you I'm 99℅ positive it's not a defective micron gauge. Are the hoses you are using vacuum rated or a good HVAC quality brand like Yellow Jacket? Do you only have a 1/4 threaded fitting off your vacuum pump? Use 1/2 hose or 5/8 if it's available it makes a huge difference. Also like other people suggested a smaller hose is more efficient as well. I have a 2 stage 7cfm vacuum pump with vacuum rated equipment and I can pull a 50 micron vacuum in less than 5 minutes. This would be 20 feet of 7/8 and 1/4 copper and the evaporator.
I would suggest getting a standard oil filled vacuum gauge. Tap into the suction line going to the pump, add a long enough length of tubing, and use double sided tape to hold it to the front of the chamber. problem solved 100%. Extremely accurate gauges of this type can be had for < $20 USD
Use this particular micron gauge for work. One option for you Cody would be to get a cheap manifold gauge set. You could put the micron gauge on the manifold gauges and then you could also isolate the vac pump if you wanted to hold the pressure. The manifold gauges also go into negative pressure.
Hello. That is the vaccum gauge i use in my job. Is for hvac equipment. Maybe you could fit a port in your vaccum chamber then plug vacrometer port to it. If you plug it directly you should read immediate drop to 50 Microns Hg. I change my pump oil when turned milky or when it darkens
This is for use on a refrigeration manifold with 3/8 ports and reacts faster as it's connected via a small port directly on the manifold and can easily be switched on and off to check if vacuum is holding at a specific micron range there are analog versions of these that read in torr you still will need to connect it to a gauge manifold however it will not turn off every five mins 👍🏻
I like the mercury gadget much more. If im about to open the hatch of my space ship, I would trust the mercury bars much more, than the reading on some electronic device.
I use micron gauges and vacuum pumps every day for refrigeration work and you should know that pulling a perfect vacuum is not an easy thing to do, a critical component of getting a good vacuum is to change the oil after every use and ensure any leaks are completely sealed, not only that it takes time to evaporate all the moisture from the air.
I calibrate gauges and chart recorders for a living. May I recommend you look at gauges by Druck or by Keller. Accuracy of them can be as little as 0.05% fsd. Not cheap but some of them also have recorder functions allowing you to view your data afterwards. Failing that, I would look into the cheaper option of a vacuum transducer with a digital indicator threaded into the side of the vacuum chamber. Also, car turbo boost gauges can be bought fairly cheap and can be purchased pre calibrated. Sorry to go on. Great videos!
I'm no expert but +- 10% doesn't seem very accurate. I don't know, maybe it works different in the vacuum measurement world but if you're measuring weight, voltage, size, or volume, 10% is pretty much useless.
Cody Slab! I remember subscribing to your channel when you had like 5000 subscribers and I was thinking: "wow this channel is so underrated, I wish channels such as this one had more subs!". And guess what, I still think so :)
if you couple the micron gauge directly to your pump you should have no issue reaching 25-50 microns. we use 500 microns as a standard when evacuating/dehydrating A/C systems.
You've tested your own gauge against a calibrated unit so skip the hassle and send the new one back. You could just adjust the scale on your homemade one to correct the difference. If youre adjusted within the 10% margin like the digital unit ....you're golden
We also use digital meters to read out vacuum inside of our spectrometer measurement chambers. There the air is sucked out to not interfere with the X-ray's as the molecules of air would also be measured instead of only the measurement sample. For measuring liquid smples, we fill the chamber with helium, this is done just below outside pressure so we know the chamber is sealed for X-ray safety. For this we measure pressure on a different meter that is calibrated for reading close to atmospheric pressure. When the change of medium (vacuum to helium) happens in the chamber, the readout of both meters are always off. What I want to say is. It is "normal" that this gauge is not reading correctly on low vacuum. They are only accurate in high vac. It's due to the effective range of the meter. I even believe its not linear either. Our meters for reading 0,5 Pa to 20Pa, they only start to be accurate/reliable under 200Pa. For lower vac you need second meter. Hope my English was understandable as I greet you from Belgium.
Cody you should be able to pull under 1000 microns if you are leak free. Put the gauge direct to your pump and it should pull under 250 microns if you pump is in good working order. CPS is a good digital gauge. I use one quite often as a refrigeration mechanic.
for the gauge mounting. why not get a brass 90 degree fitting and another piece of threaded brass tube and drill a hole through the front plexi of the chamber and glue the peice of threaded brass in then stick the 90 on the gauge and screw it into the pipe in the window? if you are worried about the pipe leaking between the plexi and it then you can get a peice of brass sheet, drill a hole in it the same size as the pipe. then you can stick the pipe in it and solder them together. you can then silicon between the plexi and brass sheet.
This gauge is used in refrigeration and air conditioning. After a repair is made to a unit, by Australian law technicians must vacuum the unit to 130 microns before charging the AC or fridge with gas. These gauges are top of the line and work beautifully when combined with a proper vacuum pump and a correct set of refrigerant gauges.
If you do keep it you most likely can sodder a wire to pcb of the device on top of the current power switch, and then run the wire outside the vacuum chamber then a button on the other end. I would use ribbon cable from something like an old cd rom head (you could also harvest a button too), its flexible and runs flat. With a bit of silicone you could make a seal that can have the door seal to it and keep a vacuum. This would definitely void any warranty / return policy.
I used to have that model vacuum gauge, you have to push the button To turn it back on. Also you might have a leak, when the chamber is Completely sealed the gauge will go all the way to 500 micros or lower. You should put the vacuum gauge on the pump and do a split screen showing Both guages.
Hey cody, I learned something today that I thought you may find ... interesting... _Maniacally rolling fingers together_ Wallpaper adhesive contains between 5-10% sodium nitrate by weight.
Cody, have you ever thought of increasing the number of pumps you have? In my opinion, what you have now, is a good middle vacuum pump. I would suggest you look at a simple centrifugal roughing pump (essentially you could steal one out of a seal-a-meal vacuum bag machine, or go a bit larger). This would be to save wear and tear on the oil vacuum pump. Once your roughing pump and vacuum pump have finished, you could go further with an ion pump (or ion sputtering pump). I would imagine you could build one, or you could find a surplus electron microscope to snag one from.
Ive gone through about 10 vacuum gauges. Digi vac, bulls eye for the win. 500$ gauge but its very accurate, can handle solvent contact, deep vacuums, and wont shut off on you. on the gauge you have I pulled too deep of a vacuum and it broke it, also didnt like how it only picks up at 250k microns along with other issues.
Hey Cody, what you could do is hook the varometer up to the vacuum pump, have a small camera watching the gauge, and superimpose the gauges feed onto the main video, if you wanted to have both in shot.
Put a tee on your hose you have attached to your vacuum chamber. Then put the micron gauge on a second hose. And make sure you have vacuum rated hoses, it does make a difference. Or you could use copper tubing with flare fittings, even better and cheaper for this application.
you should build an acrylic vacuum chamber similar to Hydraulic Press Action with a gauge port and maybe some power and I2C signal passthroughs for data acquisition..
if you had a good way to adhere it to the interior wall, and attach a neodymium magnet to the button, you could press it with another magnet, or you could attach a reed switch to the button's connections inside, and accomplish the same without all the epoxy.
I'm aircon tech and have 2 different vacy stats as we have to evacuate our refridgerant pipes to 500microns, 1 have used 4-5 different brands of co-workers and found they all have a auto off timer, so donno how much luck you will have.
I think a small handheld Pfeiffer TPG202 would be perfect for you. You will have a reading all the way from atmosphere to about 5*10^-4mbar. There are several brands with the same or similar piezo/pirani guages, but i use them on a daily in my job, so it's them i know best.
I'd just as soon return it, the mercury gauge is clearly working fine and measures the whole time. The money could definitely go into future projects rather than a frustrating gauge
cut a hole, put a copper tube in, braze it, attach your gauge to the outside. Do a proper leak check with some soapy water. Spray it on the outside of everything and if you see bubbles form in the chamber you will know where the leak is coming from.
It would be easy enough to rig a system with an Arduino and a transistor to activate the meter remotely. The Arduino would just look at a photocell or a photoresistor, and when it is activated with a bright light or a laser it could turn on the transistor for a short time, which would emulate pressing the switch. The code for that would be a piece of cake to write.
This unit is designed to be hooked to the pump and not to be thrown into the chamber, we use it when we're vacuuming ac pipes which takes hours sometimes that's why its designed to automatically switch off to save power. Also that 10% error is way too high ..
DoctorTSw4g I appreciate and respect your thoughts on the quality of the micron gauge. BUT....I do own this particular micron gauge along with three others brands. Yes, it' does cost less than alot of other brands (Yellow Jacket, Hilmore, Testo) but its outlasted everything i replaced it with.
I'm a refrigeration tech, and I use gauges and pumps exactly like this on a daily basis. CPS is in the low end of tools, but I suspect nothing is wrong with it. It's accuracy is measurable under 1000 microns. The auto off is almost mandatory because the heater element will chew through AA batteries in no time. I use Yellow Jacket, and it takes larger D Cell batteries, has no auto-off, and can operate about 6 hours on one battery. Assuming Cody is using standard 1/4 refrigeration hoses for his pump, he just needs a 1/4 flared MMF tee and hook up the gauge outside the chamber. Otherwise, he might have to get creative and weld in a fitting. Other tips for pulling vacuums. Any liquid moisture will almost certainly degrade your pump oil. Change it every time, or at least every time you pull a very high moisture load. If the oil is not clear, change it. Also, don't be shy to run the pump for 24Hrs. On one extreme job where I had a vandalised 50 ton AC unit exposed to the Canadian winter for months, I had to run 2 pumps in tandem for a week.
You will get a manometer on aliexpress for measuring vacuum. The one that is around 40$ looks great. It has two probes sticking on top. Or you can try the digital tire pressure meter that cost less than 4$ on the same website. :)
In what other universe would someone get away with putting five minutes of video up of a pressure gauge - literally nothing happening - and yet we all sit glued to the screen. That's why i come here - the randomness and Cody is such fun to be around that it makes it all worthwhile. Ps. I would send it back. What use is it if it turns off after 5 mins?
You could rig the unit outside of the chamber and film it with a second camera. Then in post, put the video of the reading in the corner, picture in picture style. A bit more work in post, but it'll get the job done and will look professional.
I believe it was on too long before the vacuum s pulled. In a full atmosphere, the heater heated the thermometer too much, and it was waiting for it to cool back down before it got an accurate reading, which is why it dropped so fast once it started reading.
ya know, a lot of these gauges have a check valve in the. meaning that if it's not plugged into something, you have to overcome the seals to make it work. if you untreated the fitting, this will probably work quite well.
Hey Cody, do you have a video explaining the mercury based vacuum gauge you were using in this video as your reference? I am looking for something to measure reasonably high vacuum and that looks like a simple and inexpensive solution.
clearly the auto-shutoff feature is to protect battery usage, and pressing the display should show the latest vacuum. placing/mounting it inside the chamber makes it difficult to touch it, unless you're in there with it. disabling an auto feature, maybe contacting the manufacturer's tech help desk. I'm going to suspect most of the questions he gets informs the tech using this involves battery replacement and hvac related issues.
Do a camera picture in picture with it in the vacuum line, then we can see it and you can reset it. Any cheep web cam would work for the insert video image.
You could easly tap and thread a fitting into the front window. It probably isn't getting full effect because it's designed to have air from inside pulled out. using it the proper way would seat the inner valve better than what he is currently doing. the outside pressure would help it read more accurately with the outside pressure acting as an insulator. That being said it doesn't mean that it should read less In low atmospheric pressure, it would be the +/- 10% error in your readings. Again, I don't know much about the product it is just my theory.
Cody you can solder on that meter photo light switch (light sencor), or how it is called in english so you can turn it on with laser, or maybe use the heating power of the laser ?
Hey, Cody. You may have already considered this, but why not connect the meter externally, and use a second camera to overlay its video on the image of the vacuum chamber? The second camera doesn't necessarily need to be of a particular high quality. I understand that another camera would be an additional expense, but it could prove beneficial for use as another angle in many other videos to come.
Cody, is it at all possible to test if you can stick weld in a vacuum, or very low pressure? I don't know how you could test it in so small a chamber, maybe just a battery and a welding rod, I don't know. And the gases produced by the flux might overwhelm the pump. I just think it would be interesting to see what the arc looks like, if it's possible, if it gets a lot bigger like rocket exhaust seems to as altitude increases.
Hey guys my main project for the week is taking longer than expected so here are a few short videos to tie you over. :)
Cody'sLab some sporadic uploading schedule, huh?
Cody'sLab you should do a Cooking With Cody series... vacuum chamber, chemicals, explosives... yum.
Cody'sLab I kinda like this style of videos
Cody'sLab
Thanks.
Sooo close to 1 mil !
- Eddy
Cody'sLab ,
can you put a slime, putty in a vacuum?
thank you cody's patrons
I sadly can't afford to be a patron at the moment but I am grateful that there are people that were able to do what I can not
Uploaded 2 min ago, 155 likes and video is 5 min long.
Cody's fans already like it before watching, respect
This was a bonus video in his methane generator pt.2 description.
Ya doodles I only ever "like" videos and I always like videos for people I subscribe to in order to help them out in the Google algorithm. So I usually press thumbs up as soon as I start watching so that I don't forget by the time the video ends and starts loading the next one.
Patreon and early video access.
Likes don't do anything in the google algorithm. They do affect ranking in Bing though, I think.
Cody, I work with vacuum systems in my research. Some of these gauges based on convection heat transfer need to be maintained in a certain orientation for proper measurement. You may want to check with the manufacturer to see if this one needs to be maintained in a certain orientation.
Three videos?! Cody you are amazing! Thank you!
Three videos. This is my new years' resolution.
binge-watch Cody' Slab for a month.
±10% that is a huge margin of error!
ya, I have to agree that is way to much. I'd expect any measuring device that is perceived as expensive to be at worst ±1%
its a yellow paper weight.
shut up nerd
the idea is to do multiple experiments then average the values to reduce its absolute uncertaintey
That 10% even makes the machine wrong. When it is reading values like 15450 micron, 10% of that would be 1545 micron. That makes the last 4 digits of the mesurment compeletelly redundant and misleading.
You could solder a reed switch on wires to the pads for the power button and use a magnet to toggle it. Or you could use a thermistor and a laser pointer.
Edward Nardella how did you comment 5 days ago? It was only published 10 minutes ago?
patreon supporters get to watch early
disassemble and modify it will void warranty I guess? with such expensive equipment then it's not really good idea
I like how you point out the things that the Patreon money is going to. It's a nice honest-feeling way to remind folks that it's a thing. Worked on me!
It will not start reading until it gets to about 25,400 microns, which is about 1 in. of mercury of atmospheric pressure left. This gauge is used a lot the HVAC-R field for us to pull down a 500 micron to dehydrate our systems. To my knowledge, there is no way to remove the 5 minute shutdown. We use these vacuum gauges to read the system directly via a schrader core, or our manifold gauges, and obviously the shutdown feature is there to save battery life, because we can simply turn it right back on. Used this specific vacuum gauge for awhile, and various other ones for 25 years now.
As an HVAC tech and happen to use that same gauge and a couple others like it. You will have to add a 1/4" adapter to the out side of your chamber to maintain accurate readings and yes to turn it backnon as it turns itself off. Yellow Jacket make a better one that the auto off can be disabled.
Yay, I partly paid for that vacuum gauge! :)
Nemozoli Cool your awesome
You're awesome... but it seems like a waste of money.
Well get your money back, it's a piece of shit! We need a better one!
Don't worry, I think Cody will know what to do with our money! I think that I have received my money's worth a long time ago, watching his videos all this time...
Hey, I hope you see this, Cody! I bought a high vacuum system with a roughing pump, turbomolecular pump, all of the gagues AND the instruments to read them (thermocouple gague and parani gague, automated valves...the works!
Only problem is I live in Taiwan (and I already have other components for a system, just not all put together yet) and I think shipping it here would take forever. I don't know if I will stay here forever, so if you want, in the meantime (probably at least a year?) you can totally use it for all sorts of awesome stuff!
It is in Denver right now, so if we can find a way to get it to you its cool if you use it for anything!
Three videos in one night?! This is ridiculous, I can't stand this much Cody. /s Love you man.
No no no. This sucks +- 10% is way too much and having it inside is bad idea since you do crazy stuff inside chamber.
You can use second camera on tripod to focus on gauge and make small overlay over main video.
I never have figured out how to do video overlays. I've followed tutorials but every time I attempt it my computer crashes.
That sounds strange... maybe something is weird with your RAM
yeah u might think of upgrading your PC
Hey Cody, that sounds like a GPU problem. Your power supply may not be enough to support the power necessary to run the graphics card. I would recommend looking into your necessary wattage for your rig as well as the maximum output from your PSU and adjust accordingly (with the obvious solution being a newer, more powerful PSU).
PM me if you'd like some help troubleshooting!
seems like Cody has a poor PC i don't think his GPU needs much at stress, running out of RAM especially if he is using adobe premiere is very likely though
Takes 3 minutes to warm up and shuts down after 5? Yeah… send it back.
It isn't warming up for 3 minutes. It doesn't read anything until you only have 1 in of mercury of atmospheric pressure left. It doesn't read until you have 25,400 microns because the gauge is used in the HVAC field, and we don't care about anything above that. Shuts down at after 5 minutes to save battery life, because we never use it INSIDE a vacuum, we use it to read a vacuum in our refrigeration systems.
Then still it won't be really useful for Cody.
Yo Cody i have a video idea... since we breath out CO2, what if we breath it into liquid nitrogen will it become dry ice???
We breathe out a lot more than C02; mostly nitrogen
you'd pretty much just see water vapor anyway.
Happy 6 year Channel anniversary, Cody !
I work with micron gauges everyday in the line of work I do. In HVAC when we vacuum your copper line set we have to pull to a minimum of 500 microns by law.
if your having issues pulling a deeper vacuum change out your vacuum pump oil IT IS hydroscopic. Also take your new vacuum pump oil and grease any threads on your hoses and connectors to reduce leaking.
Also I assure you I'm 99℅ positive it's not a defective micron gauge. Are the hoses you are using vacuum rated or a good HVAC quality brand like Yellow Jacket? Do you only have a 1/4 threaded fitting off your vacuum pump? Use 1/2 hose or 5/8 if it's available it makes a huge difference. Also like other people suggested a smaller hose is more efficient as well.
I have a 2 stage 7cfm vacuum pump with vacuum rated equipment and I can pull a 50 micron vacuum in less than 5 minutes. This would be 20 feet of 7/8 and 1/4 copper and the evaporator.
Thanks for all of the videos Cody. Ill be a patreon after tax returns :)
How did you respond to this video 5 days ago when it was uploaded like 10 mins ago?
It'sa magic!
Zane Tischler Facebook prob
hes a patreon watched it early
Not a patreon- Just follow his facebook.
I would suggest getting a standard oil filled vacuum gauge. Tap into the suction line going to the pump, add a long enough length of tubing, and use double sided tape to hold it to the front of the chamber. problem solved 100%. Extremely accurate gauges of this type can be had for < $20 USD
Use this particular micron gauge for work. One option for you Cody would be to get a cheap manifold gauge set. You could put the micron gauge on the manifold gauges and then you could also isolate the vac pump if you wanted to hold the pressure. The manifold gauges also go into negative pressure.
hey Cody I love your videos and your the best UA-camr I've ever watched can't wait for the next video
Hello. That is the vaccum gauge i use in my job. Is for hvac equipment. Maybe you could fit a port in your vaccum chamber then plug vacrometer port to it. If you plug it directly you should read immediate drop to 50 Microns Hg. I change my pump oil when turned milky or when it darkens
This is for use on a refrigeration manifold with 3/8 ports and reacts faster as it's connected via a small port directly on the manifold and can easily be switched on and off to check if vacuum is holding at a specific micron range there are analog versions of these that read in torr you still will need to connect it to a gauge manifold however it will not turn off every five mins 👍🏻
Cody please tell me you freeze dry food. Strawberries are the bomb freeze dried.
They are! especially if you soak them in sugar overnight before freezing. :)
@Cody'sLab How can I do this at home?
Get a freeze drier (The vacuum he's using was designed as one)
I like that gauge. Might have to pick one up. Only $85 on Ebay for a mint cond used, or $120 for a brand new gauge. Great video. Damn auto power off.
I like the mercury gadget much more. If im about to open the hatch of my space ship, I would trust the mercury bars much more, than the reading on some electronic device.
Cody you trying to keep me up all night lol. great vids!!! Can't wait for the next.
I use micron gauges and vacuum pumps every day for refrigeration work and you should know that pulling a perfect vacuum is not an easy thing to do, a critical component of getting a good vacuum is to change the oil after every use and ensure any leaks are completely sealed, not only that it takes time to evaporate all the moisture from the air.
I calibrate gauges and chart recorders for a living. May I recommend you look at gauges by Druck or by Keller. Accuracy of them can be as little as 0.05% fsd. Not cheap but some of them also have recorder functions allowing you to view your data afterwards. Failing that, I would look into the cheaper option of a vacuum transducer with a digital indicator threaded into the side of the vacuum chamber. Also, car turbo boost gauges can be bought fairly cheap and can be purchased pre calibrated. Sorry to go on. Great videos!
Well I was gonna go to bed but this is so much better. Thank you for the video Cody
I'm no expert but +- 10% doesn't seem very accurate. I don't know, maybe it works different in the vacuum measurement world but if you're measuring weight, voltage, size, or volume, 10% is pretty much useless.
it is 10% of reading; so, a reading of 300 microns if good as 330 to 270 microns and so on. Good enough for HVAC work.
Cody Slab! I remember subscribing to your channel when you had like 5000 subscribers and I was thinking: "wow this channel is so underrated, I wish channels such as this one had more subs!". And guess what, I still think so :)
if you couple the micron gauge directly to your pump you should have no issue reaching 25-50 microns. we use 500 microns as a standard when evacuating/dehydrating A/C systems.
damn, Cody. three videos in one night? you'll spoil us
You've tested your own gauge against a calibrated unit so skip the hassle and send the new one back. You could just adjust the scale on your homemade one to correct the difference. If youre adjusted within the 10% margin like the digital unit ....you're golden
We also use digital meters to read out vacuum inside of our spectrometer measurement chambers. There the air is sucked out to not interfere with the X-ray's as the molecules of air would also be measured instead of only the measurement sample. For measuring liquid smples, we fill the chamber with helium, this is done just below outside pressure so we know the chamber is sealed for X-ray safety. For this we measure pressure on a different meter that is calibrated for reading close to atmospheric pressure. When the change of medium (vacuum to helium) happens in the chamber, the readout of both meters are always off. What I want to say is. It is "normal" that this gauge is not reading correctly on low vacuum. They are only accurate in high vac. It's due to the effective range of the meter. I even believe its not linear either. Our meters for reading 0,5 Pa to 20Pa, they only start to be accurate/reliable under 200Pa. For lower vac you need second meter. Hope my English was understandable as I greet you from Belgium.
Pro-tip. Keep the business-end of the meter off the table
Cody you should be able to pull under 1000 microns if you are leak free. Put the gauge direct to your pump and it should pull under 250 microns if you pump is in good working order. CPS is a good digital gauge. I use one quite often as a refrigeration mechanic.
3 VIDS!! Holy Crap! Cody you spoil us!
3 videos in a day, you are spoiling uss
Phone went off, woke up, saw there was a new codyslab video, watched it, goodnight again.
I use a Testo 552, it works instantly and all the way up to normal atmosphere.
for the gauge mounting. why not get a brass 90 degree fitting and another piece of threaded brass tube and drill a hole through the front plexi of the chamber and glue the peice of threaded brass in then stick the 90 on the gauge and screw it into the pipe in the window? if you are worried about the pipe leaking between the plexi and it then you can get a peice of brass sheet, drill a hole in it the same size as the pipe. then you can stick the pipe in it and solder them together. you can then silicon between the plexi and brass sheet.
You should honestly just return that thing. Seems really pointless and expensive to me
This gauge is used in refrigeration and air conditioning. After a repair is made to a unit, by Australian law technicians must vacuum the unit to 130 microns before charging the AC or fridge with gas. These gauges are top of the line and work beautifully when combined with a proper vacuum pump and a correct set of refrigerant gauges.
Ok this is just getting crazy 3 vid in 1 day???
If you do keep it you most likely can sodder a wire to pcb of the device on top of the current power switch, and then run the wire outside the vacuum chamber then a button on the other end. I would use ribbon cable from something like an old cd rom head (you could also harvest a button too), its flexible and runs flat. With a bit of silicone you could make a seal that can have the door seal to it and keep a vacuum. This would definitely void any warranty / return policy.
I used to have that model vacuum gauge, you have to push the button
To turn it back on. Also you might have a leak, when the chamber is
Completely sealed the gauge will go all the way to 500 micros or lower.
You should put the vacuum gauge on the pump and do a split screen showing
Both guages.
you're almost at 1M subs!! getting close now!!!
Hey cody, I learned something today that I thought you may find ... interesting...
_Maniacally rolling fingers together_
Wallpaper adhesive contains between 5-10% sodium nitrate by weight.
Cody, have you ever thought of increasing the number of pumps you have?
In my opinion, what you have now, is a good middle vacuum pump. I would suggest you look at a simple centrifugal roughing pump (essentially you could steal one out of a seal-a-meal vacuum bag machine, or go a bit larger). This would be to save wear and tear on the oil vacuum pump. Once your roughing pump and vacuum pump have finished, you could go further with an ion pump (or ion sputtering pump). I would imagine you could build one, or you could find a surplus electron microscope to snag one from.
Ive gone through about 10 vacuum gauges. Digi vac, bulls eye for the win. 500$ gauge but its very accurate, can handle solvent contact, deep vacuums, and wont shut off on you. on the gauge you have I pulled too deep of a vacuum and it broke it, also didnt like how it only picks up at 250k microns along with other issues.
Hey Cody, what you could do is hook the varometer up to the vacuum pump, have a small camera watching the gauge, and superimpose the gauges feed onto the main video, if you wanted to have both in shot.
Put a tee on your hose you have attached to your vacuum chamber. Then put the micron gauge on a second hose. And make sure you have vacuum rated hoses, it does make a difference. Or you could use copper tubing with flare fittings, even better and cheaper for this application.
you should build an acrylic vacuum chamber similar to Hydraulic Press Action with a gauge port and maybe some power and I2C signal passthroughs for data acquisition..
THREE VIDEOS IN THE MATTER OF 5 MINUTES OMG YESSS
if you had a good way to adhere it to the interior wall, and attach a neodymium magnet to the button, you could press it with another magnet, or you could attach a reed switch to the button's connections inside, and accomplish the same without all the epoxy.
Mercury gauge owns the digital IMO. :P
I'm having an exam 1 hour from now but i got notification that cody uploaded videos.
Who needs to read anyway :p
Wow, three fer! Thanks Cody!
I'm aircon tech and have 2 different vacy stats as we have to evacuate our refridgerant pipes to 500microns, 1 have used 4-5 different brands of co-workers and found they all have a auto off timer, so donno how much luck you will have.
I think a small handheld Pfeiffer TPG202 would be perfect for you. You will have a reading all the way from atmosphere to about 5*10^-4mbar. There are several brands with the same or similar piezo/pirani guages, but i use them on a daily in my job, so it's them i know best.
I'd just as soon return it, the mercury gauge is clearly working fine and measures the whole time. The money could definitely go into future projects rather than a frustrating gauge
cut a hole, put a copper tube in, braze it, attach your gauge to the outside. Do a proper leak check with some soapy water. Spray it on the outside of everything and if you see bubbles form in the chamber you will know where the leak is coming from.
When you get a new one, drill a hole in the side of the chamber or t off on the pump to get a reading.
I think you should install a filter inline on your gauge to prevent particulates from entering when you vaporize materials.
i dont know i think analog gauges are more your style and are also easier to visualise on video
It would be easy enough to rig a system with an Arduino and a transistor to activate the meter remotely. The Arduino would just look at a photocell or a photoresistor, and when it is activated with a bright light or a laser it could turn on the transistor for a short time, which would emulate pressing the switch. The code for that would be a piece of cake to write.
A thermistor could be used in place of the photocell if you want it to be non light sensitive.
This unit is designed to be hooked to the pump and not to be thrown into the chamber, we use it when we're vacuuming ac pipes which takes hours sometimes that's why its designed to automatically switch off to save power.
Also that 10% error is way too high ..
you should add a port on the exterior of the chamber or tee the vacuum line to mount the gauge
3 videos in one day? awesome
I don think the gauge is that good. For an expensive kind it should be way better.
DoctorTSw4g I appreciate and respect your thoughts on the quality of the micron gauge. BUT....I do own this particular micron gauge along with three others brands. Yes, it' does cost less than alot of other brands (Yellow Jacket, Hilmore, Testo) but its outlasted everything i replaced it with.
probably a manufacturing error for cody's or first time use problems. thanks for the notice anyway. :)
Its not expensive... Expensive ones start around 1000 bucks. This one costs around 200.
I'm a refrigeration tech, and I use gauges and pumps exactly like this on a daily basis. CPS is in the low end of tools, but I suspect nothing is wrong with it. It's accuracy is measurable under 1000 microns. The auto off is almost mandatory because the heater element will chew through AA batteries in no time. I use Yellow Jacket, and it takes larger D Cell batteries, has no auto-off, and can operate about 6 hours on one battery.
Assuming Cody is using standard 1/4 refrigeration hoses for his pump, he just needs a 1/4 flared MMF tee and hook up the gauge outside the chamber. Otherwise, he might have to get creative and weld in a fitting.
Other tips for pulling vacuums. Any liquid moisture will almost certainly degrade your pump oil. Change it every time, or at least every time you pull a very high moisture load. If the oil is not clear, change it. Also, don't be shy to run the pump for 24Hrs. On one extreme job where I had a vandalised 50 ton AC unit exposed to the Canadian winter for months, I had to run 2 pumps in tandem for a week.
I agree. I'm a fridge tech too and getting moisture out is no easy task. it takes time and proper vacuum pump maintenance.
You will get a manometer on aliexpress for measuring vacuum. The one that is around 40$ looks great. It has two probes sticking on top. Or you can try the digital tire pressure meter that cost less than 4$ on the same website. :)
why don't you buy an analogue vacuum gauge?
it would look much better on camera.
Harder to read on camera.
In what other universe would someone get away with putting five minutes of video up of a pressure gauge - literally nothing happening - and yet we all sit glued to the screen. That's why i come here - the randomness and Cody is such fun to be around that it makes it all worthwhile. Ps. I would send it back. What use is it if it turns off after 5 mins?
My suggestion: Send this thing back, it doesn't seem to be worth it.
hi Cpody, some of those gauges need to be sealed from air when not in use. you will need a hand valve to isolate if you install on the chamber.
You could rig the unit outside of the chamber and film it with a second camera. Then in post, put the video of the reading in the corner, picture in picture style. A bit more work in post, but it'll get the job done and will look professional.
Send it back. Digital is useless sometimes.
I believe it was on too long before the vacuum s pulled. In a full atmosphere, the heater heated the thermometer too much, and it was waiting for it to cool back down before it got an accurate reading, which is why it dropped so fast once it started reading.
ya know, a lot of these gauges have a check valve in the. meaning that if it's not plugged into something, you have to overcome the seals to make it work. if you untreated the fitting, this will probably work quite well.
Maybe you Solder in a Shrader Valve in/on to the Vacuum-Chamber so It is outside. And you can change Units on the fly.
Cody, you need to get a BluVac micron gauge. Way better tool, and you can get them with a leak rate indicator as well.
Send it back.
God, almost 1 mil... Been here since less then 100k.
Yeaa dude these videos are early birthday presents!
I was scared the lcd screen was gonna explode
Hey Cody, do you have a video explaining the mercury based vacuum gauge you were using in this video as your reference? I am looking for something to measure reasonably high vacuum and that looks like a simple and inexpensive solution.
clearly the auto-shutoff feature is to protect battery usage, and pressing the display should show the latest vacuum. placing/mounting it inside the chamber makes it difficult to touch it, unless you're in there with it. disabling an auto feature, maybe contacting the manufacturer's tech help desk. I'm going to suspect most of the questions he gets informs the tech using this involves battery replacement and hvac related issues.
you can try threading the front glass and use a mirror to show it on camera ... or use a PIP camera
id say send it back
Seems a bit disappointing for such an expensive peace of gear
make a port for it in the chamber window
first a video from kurzgesagt and now 3 videos from cody's lab
i've been blessed
12,017 is going to be a great year for science!
Do a camera picture in picture with it in the vacuum line, then we can see it and you can reset it. Any cheep web cam would work for the insert video image.
I don't think you just put it in the chamber. There's a connector.
He doesn't have a vacuum chamber that has a port for it
AzimuthGames
Well. That means it's not suitable for him, isn't it?
You could easly tap and thread a fitting into the front window. It probably isn't getting full effect because it's designed to have air from inside pulled out. using it the proper way would seat the inner valve better than what he is currently doing. the outside pressure would help it read more accurately with the outside pressure acting as an insulator. That being said it doesn't mean that it should read less In low atmospheric pressure, it would be the +/- 10% error in your readings. Again, I don't know much about the product it is just my theory.
Cody you can solder on that meter photo light switch (light sencor), or how it is called in english so you can turn it on with laser, or maybe use the heating power of the laser ?
Hey, Cody. You may have already considered this, but why not connect the meter externally, and use a second camera to overlay its video on the image of the vacuum chamber? The second camera doesn't necessarily need to be of a particular high quality. I understand that another camera would be an additional expense, but it could prove beneficial for use as another angle in many other videos to come.
Hey Cody, could you find a way to make sulfur hexafluoride? I think it'd be funny to see you mess with it and make it!
Cody, is it at all possible to test if you can stick weld in a vacuum, or very low pressure? I don't know how you could test it in so small a chamber, maybe just a battery and a welding rod, I don't know.
And the gases produced by the flux might overwhelm the pump. I just think it would be interesting to see what the arc looks like, if it's possible, if it gets a lot bigger like rocket exhaust seems to as altitude increases.