ONH Systems medical oxygen generators operate on the Pressure Swing Adsorption (PSA) principle, separating oxygen from air using a molecular sieve that selectively adsorbs nitrogen under pressure.
These units are typically installed in hospital technical facilities and connected to centralised oxygen supply systems. They provide oxygen for patients with respiratory conditions, maintain controlled oxygen atmospheres in operating theatres, and ensure a reliable supply in intensive care units.
We offer medical oxygen generators producing up to 95 % oxygen purity with capacities up to 90 Nm³/hour. Each unit is supplied with a 24-month warranty. With proper maintenance, the expected service life is 8–10 years. ONHS provides delivery, installation, commissioning, maintenance, and staff training.
Operating Principle
- Synthetic zeolite adsorbent is used to capture nitrogen. Calcium–sodium aluminosilicate zeolite is specially structured to create pores of the required size, providing excellent sorption, ion-exchange, and selective properties. With proper air filtration, the adsorbent’s service life is unlimited.
- Dual-column design: one column operates while the other regenerates, ensuring uninterrupted oxygen production.
- Nitrogen molecules are retained in the adsorbent pores, releasing oxygen molecules.
- This process produces a continuous supply of concentrated medical-grade oxygen.
Main Components
- Adsorbers (pressure vessels)
- Pneumatic valve system
- Automatic control system
- Shut off and control valves
- Measuring and monitoring instruments
Technical Specifications
- Capacity: 0.9–90 Nm³/hour
- Purity: 94 ± 2 % O₂
- Pressure: 4.5–6 bar
All units are equipped with:
- Automatic protection against contaminated gas supply in emergencies
- Energy-saving control system
- Granule compression system for stable performance
| Model | Capacity, Nm³/h | Dimensions (W × D × H), cm | Weight, kg |
| Oxymedic 50 | 3 | 105 × 90 × 210 | 240 |
| Oxymedic 75 | 4.5 | 105 × 90 × 210 | 250 |
| Oxymedic 100 | 6 | 120 × 95 × 210 | 450 |
| Oxymedic 150 | 9 | 120 × 95 × 210 | 650 |
| Oxymedic 200 | 12 | 120 × 95 × 210 | 800 | Oxymedic 250 | 15 | 120 × 100 × 230 | 900 |
| Oxymedic 300 | 18 | 125 × 105 × 210 | 1150 | Oxymedic 350 | 21 | 160 × 115 × 240 | 1400 |
| Oxymedic 400 | 24 | 145 × 120 × 240 | 1550 |
| Oxymedic 500 | 30 | 165 × 120 × 240 | 1700 |
| Oxymedic 600 | 36 | 210 × 135 × 260 | 1800 |
| Oxymedic 700 | 42 | 2 × (160 × 115 × 240) | 2720 |
| Oxymedic 800 | 48 | 2 × (145 × 120 × 240) | 3020 |
| Oxymedic 1000 | 60 | 2 × (165 × 120 × 240) | 3320 |
| Oxymedic 1200 | 72 | 3 × (145 × 120 × 240) | 4490 |
| Oxymedic 1500 | 90 | 3 × (165 × 120 × 240) | 4940 |
Advantages
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Customisable output:
performance can be adjusted to the hospital’s needs via an automated control system with a PLC and touchscreen interface — no specialised staff required.
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High-quality materials:
corrosion-resistant aluminium and stainless steel used in all critical parts.
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Compact design:
suitable even for limited hospital spaces.
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Easy maintenance:
spare parts are readily available from stock for quick replacement.
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Tailored solutions:
optional features include containerised or skid-mounted versions, off-spec gas vent valve, oxygen flowmeter, dew point sensors, automatic signals for peripheral equipment, high-pressure cylinder filling station, and SMS alerts in case of emergency.
All generators are delivered fully assembled and factory tested.
Ordering
For pricing and technical consultation, call +7 (495) 150 44 22 or send your inquiry and technical specifications to info@onhs.ru.
