High-concentration oxygen generator OXYBERG®

PSAon siteon skid

Overview
OXYBERG® PSA oxygen generators produce oxygen on site from compressed air at selectable purities from 90 % to 95 % and outputs from 1.5 to 197.4 Nm³/h across 18 sizes. Units are skid-mounted to connect to local compressed-air supplies, replacing cylinder deliveries and liquid-oxygen tanks while giving local control of purity, flow and outlet pressure. Engineered and manufactured in Germany. Standard wear parts are off-the-shelf. Warranty: three years standard, up to five years with a service contract.

Key claims / certifications
Made in Germany
PED 2014/68/EU · Notified Body NB 2912
Oxygen purity range: 90 % – 95 %

Technology summary
A Pressure Swing Adsorption (PSA) oxygen generator separates oxygen from compressed air without chemical reaction or cryogenic cooling. Compressed air at 5–10 bar passes through a zeolite molecular sieve which adsorbs nitrogen, CO2 and residual moisture while oxygen (with the small argon fraction) passes to a buffer tank. Pressure drop regenerates the sieve; the continuous input is compressed air and the continuous output is oxygen at the selected purity (90–95 %). Argon presence sets a natural ceiling near 95 % for PSA oxygen.

The five steps of the PSA cycle

• Adsorption (Tower A): Treated compressed air enters an adsorber at 5–10 bar; zeolite retains nitrogen, CO2 and moisture while oxygen passes out to the buffer tank.
• Pressure equalization (A → B): Part of Tower A's oxygen stream pre-pressurises Tower B to save compressed air and speed changeover.
• Desorption (Tower B): Tower B is vented to atmospheric pressure and the adsorbed nitrogen is released to atmosphere.
• Purge (Tower B): Small oxygen back-flow sweeps residual nitrogen from Tower B preparing it for the next adsorption cycle.
• Switch: Tower B takes over production while Tower A regenerates; towers alternate typically every 60–120 seconds for continuous oxygen delivery.

Features and product benefits

• Five adjustable purity grades: 90 %, 92 %, 93 %, 94 % or 95 % (set in controller). Higher purity reduces throughput for a given model.
• Scalable family across 18 sizes covering 1.5 to 197.4 Nm³/h O₂ output.
• Standard, off-the-shelf wear parts (filters, valves, zeolite) to avoid proprietary spare-part lock-in.
• Cycle tuned to protect sieve life; clean, dry, oil-free compressed air required for long sieve life.
• Engineering, system integration and worldwide service from the manufacturer; typical ROI vs liquid oxygen in 2–3 years (business-case context).

Model / Performance matrix (all flow values in Nm³/h; format per cell: O₂ output / Comp. Air demand; operating pressure 5–10 bar)
Model | 90% (O₂ / Comp. Air) | 92% (O₂ / Comp. Air) | 93% (O₂ / Comp. Air) | 94% (O₂ / Comp. Air) | 95% (O₂ / Comp. Air)
OXYBERG® 500 | 2.1 / 23.1 | 1.9 / 20.9 | 1.7 / 18.7 | 1.6 / 17.6 | 1.5 / 16.5
OXYBERG® 600 | 2.9 / 31.9 | 2.6 / 28.6 | 2.4 / 26.4 | 2.3 / 25.3 | 2.2 / 24.2
OXYBERG® 700 | 4.9 / 53.9 | 4.5 / 49.5 | 4.2 / 46.2 | 3.9 / 42.9 | 3.8 / 41.8
OXYBERG® 800 | 6.1 / 67.1 | 5.7 / 62.7 | 5.5 / 60.5 | 5.2 / 57.2 | 4.9 / 53.9
OXYBERG® 900 | 9.2 / 101.2 | 8.5 / 93.5 | 8.2 / 90.2 | 7.7 / 84.7 | 7.3 / 80.3
OXYBERG® 1000 | 12.4 / 136.4 | 11.6 / 127.6 | 11.1 / 122.1 | 10.5 / 115.5 | 10.1 / 111.1
OXYBERG® 1100 | 13.8 / 151.8 | 13.3 / 146.3 | 12.8 / 140.8 | 12.4 / 136.4 | 12.1 / 133.1
OXYBERG® 1200 | 18.9 / 207.9 | 18.1 / 199.1 | 17.4 / 191.4 | 16.8 / 184.8 | 15.9 / 174.9
OXYBERG® 1300 | 24.8 / 272.8 | 23.3 / 256.3 | 22.1 / 243.1 | 21.1 / 232.1 | 20.3 / 223.3
OXYBERG® 1400 | 33.8 / 371.8 | 33.2 / 365.2 | 31.4 / 345.4 | 30.1 / 331.1 | 28.8 / 316.8
OXYBERG® 1500 | 44.6 / 490.6 | 43.1 / 474.1 | 41.6 / 457.6 | 40.5 / 445.5 | 39.1 / 430.1
OXYBERG® 1600 | 55.3 / 608.3 | 53.2 / 585.2 | 51.3 / 564.3 | 49.6 / 545.6 | 48.2 / 530.2
OXYBERG® 1700 | 65.8 / 723.8 | 64.4 / 708.4 | 62.1 / 683.1 | 61.4 / 675.4 | 59.8 / 657.8
OXYBERG® 1800 | 89.2 / 981.2 | 86.2 / 948.2 | 83.2 / 915.2 | 81.0 / 891.0 | 78.2 / 860.2
OXYBERG® 1900 | 110.6 / 1,216.6 | 106.4 / 1,170.4 | 102.6 / 1,128.6 | 99.2 / 1,091.2 | 96.4 / 1,060.4
OXYBERG® 2000 | 131.6 / 1,447.6 | 128.8 / 1,416.8 | 124.2 / 1,366.2 | 122.8 / 1,350.8 | 119.6 / 1,315.6
OXYBERG® 3000 | 165.9 / 1,824.9 | 159.6 / 1,755.6 | 153.9 / 1,692.9 | 148.8 / 1,636.8 | 144.6 / 1,590.6
OXYBERG® 4000 | 197.4 / 2,171.4 | 193.2 / 2,125.2 | 186.3 / 2,049.3 | 184.2 / 2,026.2 | 179.4 / 1,973.4

Characteristics / Technical specifications

• Purity: 90 % – 95 %.
• O₂ flow range (product gas): 1.5 – 197.4 Nm³/h across the family.
• Compressed-air demand: 16.5 – 2,171.4 Nm³/h depending on model and purity.
• Operating pressure: 5 – 10 bar.
• Model family: 18 sizes (OXYBERG® 500 through OXYBERG® 4000).
• Cycle timing: typically 60 – 120 seconds per adsorber tower, using two towers in alternation.
• Five adjustable purity grades via controller (90, 92, 93, 94, 95 %).
• Standard wear parts available on open market (filters, valves, zeolite molecular sieve).
• Engineered and manufactured in Germany; PED 2014/68/EU assessed (Modules B + D), NB 2912.
• Warranty: 3 years standard, up to 5 years with service contract.
• Typical compressed-air to oxygen conversion ratio: ~11 m³ compressed air per 1 m³ oxygen (approximate across range).