OXO10-OEM Assembly vs. ATF-15 Oxygen Concentrator

ATF-15 Oxygen Concentrator
OXO10-OEM Oxygen Concentrator

With all of the different oxygen concentrators that we have to offer, it can sometimes be difficult to discern between all of the options to figure out what is the best product for you. In this article we will be comparing the ATF-15 to OXO10-OEM oxygen concentrator. Lately, we have been recommending customers purchase the OXO10-OEM as opposed to the ATF-15, this is primarily because of the cost difference and similar performance specifications.

OXO10-OEM Assembly

The OXO10-OEM is capable of efficiently producing 21 SCFH (10 LPM) of oxygen from an OEM oxygen concentrator module @ 15 PSI and costs $1,450. One of the great things about this oxygen concentrator is that it only requires electrical power and compressed air for operation. Because of the compact design, the OXO10-OEM is made to fit into your existing system where high oxygen purity is needed. The OXO10 also includes an air pressure gauge, along with an air pressure relief valve for increased safety. One of the convenient features from the OXO10 is the rebuildable components. The sieve beds and valves are all replaceable, which leads to saving money in the long-run since you will not need to replace the entire system.

ATF-15

The ATF-15 is capable of producing 15 SCFH of oxygen at 18 PSI and costs $1,989. A patented single rotary distribution valve built into the ATF module continually rotates at a low speed from a small motor. The valve is maintenance-free, self-cleaning, insensitive to contamination, and invulnerable to wear. It directs the flow of compressed air to a group of four sieve beds (adsorption), while another four beds are purged into the atmosphere through the valve (desorption). The remaining four of the twelve beds are interconnected through the valve to equalize pressure as the sieve beds sequentially transition between adsorption and desorption.

Pressure Swing Adsorption (PSA) Technology

Both of these oxygen concentrators incorporate PSA technology. PSA technology is essentially separating the oxygen (21%) from the air it is provided and returns the nitrogen (78%) to the atmosphere through a waste gas muffler. The main component to this technology is a material called Molecular Sieve (Zeolite). This sieve is an inert, ceramic-life material that is designed to absorb nitrogen more readily than oxygen. This process is reliable, virtually maintenance-free and will last indefinitely as long as it does not become contaminated with water or oil vapors.

The OXO10-OEM Assembly can purchased here

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Custom Oxygen Concentrators

Newly-built Custom Oxygen Concentrator

We can build custom oxygen concentrators to fit many different specifications for a wide array of applications. The picture above shows one of the customized oxygen concentrators that we have recently built. For this particular unit, the customer was looking for a system that would produce oxygen at approximately 70% purity. Although typical oxygen concentrators produce roughly 93% pure oxygen, we were able to easily create an oxygen generator that met our customers specific needs. In the picture above, we can see the “Air Flow Control” knob, as well as the “Oxygen Flow Control” knob. This addition to the oxygen generator give the user the ability to easily adjust the purity of their oxygen flow. To decrease the oxygen purity, the user simply has to increase the air flow and decrease the ozone flow. Were purer oxygen desired, the opposite actions would need to be taken. Along with the adjustability, we also added in an easy-to-read LED screen to the front of the unit (see in the images below) so the user can know the specific purity of the oxygen being produced. Contact us today to talk with an industry expert and find out how we can build a system to fit your needs.

Upper-Right Corner shows the screen displaying the precise oxygen purity level.
Another view of one of our custom oxygen concentrators.

There are many different options when it comes to the customizability of these oxygen concentrators. While the unit seen above had a focus on the oxygen purity, other attributes can be factors for customization, such as the oxygen pressure, flow, and concentration. We can easily adjust the pressure, flow, and/or concentration of oxygen to fit all of your specific needs. Along with these simple customizations, we also now offer high pressure oxygen concentrators. The TOX-20 through 40 are now available in high pressure models. One of the great things about the HP series of oxygen concentrators is that they provide oxygen pressures of 90 PSI continuously, as well as a storage tank (ranging from 20 to 30 gallons) to store oxygen. To view our full line of high pressure oxygen concentrators, Please Click Here.

TOX-40 HP

If you would like to reach out and ask about our custom oxygen concentrators, Please Click Here.

To see all of the oxygen generators we offer, Click Here.

Product Spotlight: Oxygen Concentrators

Oxygen Concentrator Types Compared

The purpose of this article is to explain the main types of oxygen generators available for ozone production and the advantages/disadvantages of each.

There are a few manufacturers of oxygen generators and a few differences between each. However, the fundamental operation of each manufactures version is very similar so that will not be reviewed here. We will focus on the three main styles of oxygen generators and how they could be implemented into your ozone generation system.

Turnkey oxygen concentrators OGSI, OG-15 and OG-20 AirSep, AS-12 and Onyx Sequal, Workhorse line
OEM oxygen concentrator modules Sequal, ATF modules OGSI, OG-OEM modulesSequal and OGSI OEM Oxygen Generator
Industrial oxygen concentrator systems AirSep, AS-A, AS-B, etc OGSI, OG-25, OG-50, etcIndustrial oxygen generator

Generally smaller ozone systems will use the turnkey oxygen generators, and larger ozone systems with higher ozone production rates will use the industrial oxygen generators, while small to medium integrated ozone systems will use the OEM modules. However, there are applications where the industrial style oxygen generator is required for higher pressures, or turnkey oxygen generators are required due to the lack of space or available compressed air.

Turnkey Oxygen concentrators

Packaged oxygen generators that include an oil-less compressor, PSA oxygen generator, and all components to concentrate oxygen from ambient air. These units only need electrical power for operation and will provide oxygen at 93% purity.

Examples:

  • OGSI, OG-15 and OG-20
  • AirSep, AS-12 and Onyx
  • Sequal (Chart), Workhorse line
Turnkey packaged oxygen generators from airsep, OGSI, Sequal

Advantages:

  • Compact size allows for install in relatively tight spaces
  • Turnkey design allows for quick and easy operation
  • Relatively low cost

Disadvantages:

  • Lower oxygen output delivery pressures due to limitation of internal oil-less compressors
  • Poor reliability due to the lack of ability to purge moisture from process air
  • High maintenance costs due to poor reliability

OEM Modules

OEM models are offered by both OGSI and Sequal (Chart). The OEM modules use the same PSA sieve beds and valving systems as the turnkey packaged oxygen generators provided by those companies. These modules are commonly used to build ozone generators with integrated oxygen generators, or smaller integrated ozone systems.

Examples:

  • OGSI, OG-15-OEM and OG-20-OEM
  • Sequal (Chart), ATF Modules, ATF-8, ATF-12, ATF-15, ATF-23, ATF-25, and ATF-32
OEM oxygen generator from OGSI and Sequal

Advantages:

  • Compact size allows for install in relatively tight spaces
  • OEM configuration allows for installation into the same enclosure as an ozone generator if desired
  • Use of compressed air from plant air compressor may allow for very clean, dry air to be used increasing reliability dramatically when compared to the turnkey packaged oxygen generators.
  • Can provide slightly higher oxygen delivery pressure than turnkey packaged oxygen generators due to the higher compressed air inlet pressures that can be used
  • Lowest potential operational costs if plant compressed air is used

Disadvantages:

  • Installation equipment is required and must be done properly for reliable operation
  • Lower oxygen output delivery pressures than industrial oxygen generators
  • Potentially high replacement costs (applies to Sequal/Chart ATF-modules)

Industrial Oxygen concentrators

Industrial oxygen concentrators are used for medium to large scale ozone generation systems. These systems require compressed air for operation along with proper plumbing and set-up. Large steel cylinders are used to hold the molecular sieve material, and quality rebuildable solenoid valves are used to perform all purging and oxygen recovery actions.

Examples:

  • OGSI, OG-25, OG-50, OG-100, etc
  • AirSep, AS-A, AS-B, AS-D, AS-E, etc
Industrial oxygen generators from Airsetp and OGSI

Advantages:

  • Long term reliability of the system – only periodic maintenance is required
  • Lower overall long-term operational costs than other options due to low cost for rebuilding the unit
  • Higher oxygen delivery pressures (45 – 65 PSI)
  • Higher oxygen flow-rates available

Disadvantages:

  • Higher up-front capital costs for oxygen generator, tanks, and potentially the air compressor
  • May require more physical space for installation
  • Greater installation work required

To See Our Complete Oxygen Concentrator Lineup, Please Click HERE

MAX-Series Oxygen concentrators

We have recently started selling the MAX-Series of oxygen concentrators. This is a great addition to our oxygen concentrator line-up. We believe these units are a higher build-quality, at a lower cost, than the other units we have been selling, and have faster lead-times.

Max Pro O2 Series Oxygen Generator
MAX-10 Oxygen Generator

The MAX-Series oxygen concentrators are available in three sizes:

  • MAX-5 = 5 LPM (10.5 SCFH) oxygen at 7 PSI
  • MAX-8 = 8 LPM (16.8 SCFH) oxygen at 15 PSI
  • MAX-10 = 10 LPM (21 SCFH) oxygen at 21 PSI

The MAX series of oxygen concentrators has the following features that are shared by many other brands of oxygen concentrators:

  • Built-in flow-meter
  • Flow adjusting knob
  • Vibration isolation feet for air compressor
  • Replaceable compressed air filter
  • Mounting/leveling feet
  • Hour-meter

The MAX Series has features that are exclusive to this device that set it apart from the other lines we sell.

  • Built-in oxygen purity meter alarm
  • Oxygen filter
  • Air cooler and moisture trap to remove bulk-moisture from the compressed air supply

Learn more about the MAX-Series at the great video we put together below:

Should you have questions about these units, or any oxygen generator we sell, please contact our technical sales staff for help.

A Home Remedy for Ailing Oxygen Concentrators

An oxygen concentrator is a wonderful machine … when it works. Attempts to diagnose and repair a your concentrator when it fails can be very frustrating. But understanding just a few principles of operation may turn frustration to success.

Principle #1 Remember your sand box.


If you have ever played with a sieve in a sandbox, you already understand the science behind an oxygen concentrator. The air we breathe contains about 78% Nitrogen and 21% Oxygen. The other 1% is composed of a few other gasses. An oxygen concentrator is a sieve that lets Oxygen molecules through and holds back the Nitrogen molecules.

So you need to picture some poor quality sand with about 80% pea gravel mixed in. It’s nice and dry, so when you scoop some up in your sieve and shake it a bit over a bucket, you end up with some nice, beach quality sand and a sieve that’s still got a lot of pea gravel in it. Dump out the gravel into another bucket and do the same thing over again. Slowly but surely you fill your sand bucket with some nice sand. This is like the tank of oxygen you accumulate with an oxygen concentrator. The pea gravel dump pile is the Nitrogen that hisses out of the concentrator muffler. Take the muffler off, and you can get a better feel of the process.

Principle #2 – Respect the destructive power of moisture

Now, you might recall that when you get some wet sand in your sieve, the process doesn’t work so well anymore. You might need to shake it more and everything starts to clog up. Moisture causes lots of problems for an oxygen concentrator as well. Once it starts to condense in the sieve material, the sieve begins to break down. It would be like your sandbox sieve falling apart or getting rusty so that either everything just goes straight through or it gets completely plugged and nothing goes through. The sieve material in an oxygen concentrator is in the form of little clay pellets that are treated with zeolite. This material does a great job sorting out the Nitrogen from the Oxygen, but is very vulnerable to moisture.

If the sieve material has been exposed to moisture and has begun to break down, you will begin to see signs of this process with dust that starts blowing out of the exhaust mufflers. It is best to take care of the problem as soon as possible, because the dusting will only lead to more problems. It will begin to disrupt the valve operation and may even totally clog up the mufflers to the point where the Nitrogen can’t exhaust anymore. Chances are, by this time the sieve material is ruined and is not filtering out the Nitrogen anymore.

What to do. Unfortunately, if your sieve material is breaking down, your concentrator sieve beds will need to be rebuilt. The sieve bed needs to be opened up, old material dumped, and new sieve material put in. Sieve beds are typically in the form of two aluminum tubes with some screens and a spring to hold the sieve material in place. These need to be carefully cleaned, inspected for damage, and carefully put back together so that it is sealed up tight. If you’re not up for the challenge of rebuilding the sieve bed, you can send the beds in to us for a re-build.

Principle #3 Valves need to operate flawlessly.


Rebuilt sieve beds may not be the whole solution. There is a good chance that the dust from degraded sieve material has found its way to the valve set. The valves are your arms working the sieve in the sandbox: dig up some sand, hold it over the sand bucket, dump out the gravel into the gravel pile, do it all over again and again and again. If you’re sloppy, you’re going to get gravel in your sand.

In an oxygen concentrator, two sieves are at work together. When one is sifting, it is also at the same time helping to clean out all the Nitrogen being exhausted by the other sieve bed. The valves direct a certain quantity of air for a certain time into the sieve. Too much air, and it is like the sieve overflows and Nitrogen spills into your oxygen, diluting it. If the Nitrogen isn’t dumped properly, the next cycle is ineffective and disrupts the rhythm.

The valves need to open to let compressed air into the sieve for a certain time. Oxygen flows out the other side through an orifice and a check valve. As the air valve closes, it opens a second port to release the Nitrogen trapped in the sieve back into the surrounding air. A second valve lets compressed air into the second sieve. As it fills, some of the oxygen leaving the other end helps force the remaining Nitrogen out of the first sieve.

The valves are typically a spindle that slides back and forth to direct the gas flow. A solenoid pushes the spindle back and forth. When electricity flows through the coil of wire in the solenoid, the magnetic field generated pushes a plunger to move the spindle. The spindle needs to move freely. Dust or contaminants can interfere with its movement so that the air is not precisely measured or timed properly. A careful cleaning of the valve often will fix a sticky valve, but sometimes even when it seems to be operating smoothly, only a new set brings the precision needed for proper operation.

Principle #4 Check valves and orifices may seem insignificant, but they’re not.

What looks like little connectors for oxygen tubing are actually precision parts that work together with the air valves to direct the Oxygen and Nitrogen flow. Orifices are precisely sized holes that limit the flow of Oxygen. In a concentrator, they are often used to allow a limited amount of Oxygen to push out any remaining Nitrogen left after exhausting from the de-pressurized sieve. If it gets plugged, Nitrogen stays in the sieve and ends up contaminating your oxygen supply. The check valves prevent any excess oxygen from flowing back into the sieve. Make sure the oxygen hoses are clear of debris, you can blow air through the orifices, and the check valves work. You should be able to blow through one way, but not the other. They need to be oriented so that the oxygen flows to the oxygen tank and not back.

Principle #5 More O2 flow is not better

A simple thing to overlook when trying to figure out when the O2 purity isn’t what it should be is excessive oxygen flow. Bring back to mind the sieve in the sandbox. The sieve is only so big. It will only hold so much sand and pea gravel. If you exceed the capacity, extra material is going to fall over the sides and not go through the sieve. Try operating your concentrator at a flow rate that is lower than the maximum rating. If you get good oxygen purity at a low flow rate, but it starts to fall off as you approach its rating, you might have some oxygen leaks. An oxygen leak won’t be measured by your flowmeter. Use some soaping water to look for leaks and fix them.

We sell and service most brands of industrial oxygen concentrators, stock parts, and do all we can to keep oxygen concentrators healthy. We also sell and rent oxygen meters to determine the oxygen purity of a system. A diet of clean, dry air is proven to greatly extend their life. They are designed to handle a limited amount of moisture, but it is risky. Continuous use, just like regular exercise, will also extend life. Startup on a humid day will be hard on them. Hot humid air from the compressor is liable to condense in a cooler sieve and begin the cycle of damage. If the suggested remedies do not solve your concentrator problems, feel free to give us a call.  Oxidation Tech Phone number

Aerous-8 Oxygen Concentrator

The Aerous-8 Oxygen Concentrator is a turn-key machine ready to use upon delivery.  This is a low cost method to provide oxygen from ambient air reliably.

Aerous-8 Oxygen Concentrator
8 SCFH oxygen concentrator

Operating off 120 VAC power the Aerous-8 only requires ambient air and electrical power for operation.  The air compressor, filtration and all necessary parts for operation are included in one enclosure./

Aerous-8 Pneumatic Diagram

Great for ozone generation and other industrial applications.  The Aerous-8 provides oxygen at up to 10 PSI of pressure.  When used with an ozone injection system the Aerous-8 will produce more ozone from your ozone generator, and provide pressure to push ozone gas into the venturi, therfore increasing flow of oxygen into the water.

Aerous-8 Performance chart

For questions on our oxygen concentrators, contact our application experts today.