Cylinder - E size (680 litres), CAD$41
https://www.amazon.ca/Oxygen-Cylinder-6 ... B01G91VZ02
Cannula: USD$3
http://www.ebay.com/itm/Salter-Labs-Nas ... 2470498775
Regulator: USD$20
get the paediatric one, 4lpm is a lot of supplementary oxygen and you'll benefit from the more closely adjustable flow rates than the adult ones:
https://www.amazon.com/CGA-870-PEDIATRI ... B00ZPQRQ9M
Pulse oximeter: USD$10
http://www.ebay.com/itm/US-Finger-Finge ... 2538290062
Optional upgrades
A bag to put it in: USD$21
https://www.amazon.com/Oxygen-Tank-Cyli ... B0062OIC4Y
An 'oxymizer' cannula that allows you to use about 1/3 of the gas for the same results: USD$20
https://www.amazon.com/Drive-Med-224139 ... B00Q5ENJ1M
For stuff that won't ship to Canada, get a US shipping address from these people:
http://crossborderpickups.ca/
To get the tank filled, take it to a medical oxygen place and show them your pilot licence. Or a welding supplier, it's all the same gas. Don't take any shit about how it has to be "dry" oxygen - all oxygen is manufactured via the same process and is dry, and nobody wants random impurities screwing with their welds. You may or many not want this filling adaptor from a medical fitting to a CGA-540 which is more common for aviation and the one used for industrial oxygen cylinders.
https://www.amazon.com/SEPTLS312M871-We ... B002BXHX8G
Watch out for filled oxygen tanks. Firstly just the compressed gas alone has as much energy stored - and can do as much damage - as a small aircraft in flight. You don't want that either bouncing around the cabin after a, er, rough landing, or turning itself into a projectile because you dropped it and sheared the valve off at the neck releasing the gas. Look on youtube for the gory slide show of the damage caused by an exploding small cylinder: the guy who mishandled it had his arm severed by the explosion between the wrist and the elbow.
Secondly oxygen-enriched atmospheres turn a tiny fire into a real problem, and big fire into a neighbourhood disaster - see Apollo 1 for details. Any grease in the fittings will spontaneously explode when exposed to 150 atmospheres pressure of pure O2. Even the aluminium of the cylinder interior can burn given an ignition source. So make sure your system doesn't leak, keep it clean, and don't smoke while using it. See youtube again for the video of the nasal cannula set alight by the user's cigarette and try to avoid 3rd degree burns to your nose and lips.
Have fun everyone.
$100 personal oxygen system
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$100 personal oxygen system
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
Re: $100 personal oxygen system
Here's some details about the results of a single oxygen cylinder explosion in 2006, that killed 4, from this page:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2932522/
I suspect Victim 1 was the person holding the tank when it blew.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2932522/
I suspect Victim 1 was the person holding the tank when it blew.
There are photos, too.Autopsy findings
Victim-1
Extremely mutilated, charred and separated remains weighing about 10 kg of a male — 32 years, (Gathered in a yellow color tub-bucket) comprising of: (1) Scalp attached to some pieces of left side skull vault and facial skin attached to left half of mandible (with 8 teeth). (2) Piece of right mandible (with 7 teeth). (3) Five thoracic vertebra in one with attached pieces of ribs. (4) 15x10cm skin flap of anterior abdominal wall. (5) Two lumbar vertebra in one piece. (6)Three lumbar vertebras in one piece. (7) Acetabular fragment of right hip joint. (8) Acetabular fragment of left hip joint. (9) Fragment of right elbow joint. (10) Great toe (side not opined). (11) Unidentifiable soft tissue masses with bone remnants. (Photograph-3). All above stated materials were completely separated with each other and brownish granular material was sticking to uncharred areas.
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
Re: $100 personal oxygen system
Set me up with a set up. No Joke. Will discuss over PM or in person next time I see you.
Meatservo wrote:I just slap 'em in there. I don't even make sure they are lined up properly.
Re: $100 personal oxygen system
Have a few question:
What would be needed to make a two persons system with this?
The system I usually borrow has a flow indicator for each user. I think this is important to ensure at altitude that things do work. How can we get this?
Thanks
Yves
What would be needed to make a two persons system with this?
The system I usually borrow has a flow indicator for each user. I think this is important to ensure at altitude that things do work. How can we get this?
Thanks
Yves
Re: $100 personal oxygen system
I'm working on a parts list for that. It's difficult to avoid the cabin ending up with more tubes than an operating theatre though. You have that problem with the expensive aviation systems anyway, so perhaps it's acceptable.
In terms of a flow indicator: the best way to tell things are working is a pulse oxymeter. The "ball in the tube" is nice to have, but the oxymeter is still required, to my mind.
In terms of a flow indicator: the best way to tell things are working is a pulse oxymeter. The "ball in the tube" is nice to have, but the oxymeter is still required, to my mind.
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
Re: $100 personal oxygen system
Good find, photofly. I'm looking for an oxygen system myself. But does the following comment in the lone review bother you?
"... upon inspection, they had significant internal oxidation and required cleaning to oxygen service specifications before use. Most new cylinders don't have this amount of oxidation in them. As I am a certified cylinder inspector and oxygen service technician, I could service them myself. Just to be safe, I would recommend a certified cylinder inspector and oxygen service technician inspect and clean them before filling."
"... upon inspection, they had significant internal oxidation and required cleaning to oxygen service specifications before use. Most new cylinders don't have this amount of oxidation in them. As I am a certified cylinder inspector and oxygen service technician, I could service them myself. Just to be safe, I would recommend a certified cylinder inspector and oxygen service technician inspect and clean them before filling."
Re: $100 personal oxygen system
No, based on my current understanding, it doesn't concern me.
Potential dangers could include:
1. toxicity to the user
2. risk of fire or explosion
3. weakening of the cylinder
In the first, aluminium oxidation products are non-toxic solids, not gaseous, and form a hard coating on the surface of the aluminium. I deduce that it's unlikely that any particles will break off and if they do they'd encounter the sintered bronze filter in the regulator.
In the second, oxidation products are already oxidized, so can't "burn" any further. There is a supposed risk of particulate matter inside a cylinder being accelerated by the gas flow through the neck and impacting inside the regulator causing ignition of the particle and the inside surface of the regulator (where it's made of aluminium.) All the regulators I have have bronze inlet filters and, because of the nature of aluminium oxides it's unlikely there are loose particles inside the cylinder.
In the third case the report suggests that the cylinder only needed to be cleaned. If the corrosion was enough to weaken the cylinder, cleaning isn't going to fix the problem.
It's extremely difficult to remove aluminium oxide from aluminium - it takes Scotchbrite and elbow grease - lots of it. This cylinder is more than 2 feet long and has only a 3/4" hole so mechanical cleaning of the interior is going to be difficult, to put it mildly. I'd have to ask what sort of cleaning he used. All the technical advice I've read on the subject of cleaning Al oxygen cylinders says they need to be washed with a good detergent, to remove oil residues. But this report doesn't mention any oil residues, and washing the inside of a cylinder with hot water and washing up liquid isn't going to remove oxidation products.
Potential dangers could include:
1. toxicity to the user
2. risk of fire or explosion
3. weakening of the cylinder
In the first, aluminium oxidation products are non-toxic solids, not gaseous, and form a hard coating on the surface of the aluminium. I deduce that it's unlikely that any particles will break off and if they do they'd encounter the sintered bronze filter in the regulator.
In the second, oxidation products are already oxidized, so can't "burn" any further. There is a supposed risk of particulate matter inside a cylinder being accelerated by the gas flow through the neck and impacting inside the regulator causing ignition of the particle and the inside surface of the regulator (where it's made of aluminium.) All the regulators I have have bronze inlet filters and, because of the nature of aluminium oxides it's unlikely there are loose particles inside the cylinder.
In the third case the report suggests that the cylinder only needed to be cleaned. If the corrosion was enough to weaken the cylinder, cleaning isn't going to fix the problem.
It's extremely difficult to remove aluminium oxide from aluminium - it takes Scotchbrite and elbow grease - lots of it. This cylinder is more than 2 feet long and has only a 3/4" hole so mechanical cleaning of the interior is going to be difficult, to put it mildly. I'd have to ask what sort of cleaning he used. All the technical advice I've read on the subject of cleaning Al oxygen cylinders says they need to be washed with a good detergent, to remove oil residues. But this report doesn't mention any oil residues, and washing the inside of a cylinder with hot water and washing up liquid isn't going to remove oxidation products.
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
Re: $100 personal oxygen system
Thanks for collecting all the pieces into one spot. Have been looking to build a set-up but want to do a two person so standing by for that. Two port regulators seem to be the hella expensive part from aviation sources. Not sure if a simple "T" in the hose with a doubled flow rate would be sufficiently balanced.
Re: $100 personal oxygen system
The reason the single outlet regulators are so cheap is because about a zillion Americans have COPD and need one to stay alive.
For two people I would try to use an 8lpm regulator just as a cheap 50psi first stage device, then a y-connector, and then two of these:
http://www.ebay.com/itm/331264642634?_t ... 2749.l2648
That's described as LZQ-3 height 90MM flowmeter 0-5 LPM flow meter for Oxygen /air/gas - and it has a needle valve so each person can adjust their own oxygen flow.
Also a cannula each. Plus all the tubes to tie it together. You could probably use some velcro tape to strap it all together so there's not so much spaghetti.
For two people I would try to use an 8lpm regulator just as a cheap 50psi first stage device, then a y-connector, and then two of these:
http://www.ebay.com/itm/331264642634?_t ... 2749.l2648
That's described as LZQ-3 height 90MM flowmeter 0-5 LPM flow meter for Oxygen /air/gas - and it has a needle valve so each person can adjust their own oxygen flow.
Also a cannula each. Plus all the tubes to tie it together. You could probably use some velcro tape to strap it all together so there's not so much spaghetti.
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
Re: $100 personal oxygen system
On second thoughts, for two people I'd just take two smaller cylinders, two regulators and two cannulas.
On the subject of filling an 'E' tank in the GTA:
Maggas : $50
Camcarb: $20, but they said I'd have to take along my own CGA540-CGA870 adapter
My local SCUBA store: $20, closer than Camcarb and they have the adapter.
On the subject of filling an 'E' tank in the GTA:
Maggas : $50
Camcarb: $20, but they said I'd have to take along my own CGA540-CGA870 adapter
My local SCUBA store: $20, closer than Camcarb and they have the adapter.
DId you hear the one about the jurisprudence fetishist? He got off on a technicality.
