O-GEN Series Oxygen Generators: How to Produce Oxygen On-Site
Why Have Your Own Oxygen Generator?
Traditionally, businesses obtained oxygen in cylinders or tanks — ordering deliveries, managing stock, and tracking inventory. It’s inconvenient, expensive, and creates dependency on a supplier. Today, more and more companies are switching to on-site oxygen production using generators.
The O-GEN oxygen generator from Omega Air is exactly that kind of solution: a compact unit that takes ordinary atmospheric air and delivers pure oxygen. No cylinders, no orders, no dependency.
How Does It Work? A Simple Explanation
The air we breathe is approximately 78% nitrogen and only 21% oxygen. The generator’s job is to separate them.
O-GEN series generators use PSA (Pressure Swing Adsorption) technology. It sounds complex, but the idea is simple:
- Air is fed under pressure into a special vessel — an adsorber filled with molecular sieve (zeolite).
- The molecular sieve “captures” nitrogen: the mineral absorbs nitrogen molecules while oxygen passes through to the end user.
- The sieve regenerates: once it is saturated with nitrogen, the pressure drops to atmospheric level and the adsorber is purged. Nitrogen is released, and the sieve is ready for a new cycle.
To ensure a continuous oxygen supply, the O-GEN generator uses two columns that alternate between adsorption and regeneration modes. While one is “collecting” oxygen, the other is “resting” and regenerating.
Key point: With proper operation and maintenance, molecular sieves last virtually indefinitely. This means the generator is a one-time investment that pays off for years.
O-GEN Series Technical Specifications
| Parameter | Value |
|---|---|
| Operating pressure | 5–6 bar |
| Operating temperature range | +5 to +50 °C |
| Ambient temperature | up to +45 °C |
| Dew point (atmospheric) | below −60 °C |
| Flow rate | 1.02 to 94.9 Nm³/h |
| Oxygen purity at outlet | up to 95% |
Output ranges from small units for a single workstation to serious industrial-scale solutions. A purity of 95% is sufficient for the vast majority of technical applications.
Where Are O-GEN Generators Used?
Oxygen is needed across many industries, and O-GEN covers a wide range of applications:
Industry & Metalworking
- Gas cutting of metal
- Welding and brazing
Chemical & Manufacturing
- Gas supply for ozone generators
- Glass manufacturing
- Metal leaching from ores
- Reduction of nitrogen oxide emissions
Aquaculture
- Fish farms — water oxygenation to improve fish survival rates
Health & Wellness
- Oxygen therapies, spas, wellness centres
Why Is a Generator Better Than Cylinders?
| Cylinders / Tanks | O-GEN Generator | |
|---|---|---|
| Supplier dependency | High | None |
| Ongoing costs | Yes (purchase + delivery) | Electricity only |
| Storage | Requires space & permits | Not required |
| Supply reliability | Depends on logistics | Continuous |
| Payback period | — | Typically a few years |
Companies that consume oxygen on a regular basis generally recoup the cost of such units quickly and move to significant long-term savings.
Types of Oxygen Generators: Where PSA Fits In
Beyond PSA generators, there are other methods of producing oxygen. Here’s how they compare:
Cryogenic units — separate air by liquefaction and evaporation. Very high output capacity, but energy intensity makes them viable only for large metallurgical plants.
Membrane generators — pass air through a polymer membrane. Compact and simple, but they deliver oxygen concentrations of only 40–45%, so “concentrators” is the more accurate term.
Electrolysers — split water into oxygen and hydrogen using direct electrical current. They produce very pure gas, but capacity is limited and costs are high.
PSA generators (O-GEN series) — the optimal balance for most industrial needs: purity up to 95%, continuous operation, reasonable energy consumption, and a long service life.
Certification & Reliability
O-GEN series generators are manufactured by Omega Air (Slovenia) and comply with international quality standards including ISO 9001, ISO 14001, CE, TÜV, and ISO 13485 (medical devices). This confirms that the equipment is suitable even for highly regulated sectors such as medicine and pharmaceuticals.
Summary
O-GEN series oxygen generators are a practical solution for any facility that needs a reliable source of industrial oxygen. The PSA principle ensures dependable, uninterrupted operation, long component life, and independence from external suppliers.
If your operation regularly consumes oxygen, an on-site generator is not a luxury — it’s a sound investment that pays for itself and simplifies day-to-day operations.
