OGP 2-200

General Description


The OGP is a standard Atlas Copco oxygen generator, based on pressure swing adsorption technology, for producing oxygen at point of use with purity up to 95%.


The OGP is built according to proven design standards and is suitable for indoor use in a normal industrial environment. The design, materials and workmanship ensure of the best available quality and performance.


The OGP is a self-contained unit including all necessary controls, piping and fittings needed for proper operation.









The wide product range and oxygen flows up to 200 Nm³/h makes the OGP series ideal for applications such as chemical industry, metal industry, medical use, wastewater treatment and many more.


Operating Principle


The Oxygen Generator makes use of Pressure Swing Adsorption (PSA) technology to produce oxygen by passing pre-treated compressed air through a vessel containing a zeolite adsorbent (molecular sieves – MS). The PSA process is inherently a batch process, as the adsorbent bed requires periodic desorption. In order to secure steady flow, the PSA Oxygen Generator systems contain two adsorbent vessels to provide operational continuity. One vessel is active while the other one is inactive. At the end of each cycle they switch roles.




The active vessel is pressurized, and pre-treated compressed air enters the active vessel and follows up through the MS. Nitrogen molecules are being adsorbed while the oxygen molecules pass through.

When the adsorbing vessel approaches saturation, the regenerated vessel is partly re- pressurized with the compressed air from the adsorbing vessel. This is called the equalization step, and is intended to reduce compressed air consumption.

When pressure from the saturated vessel is released, the regeneration process starts. At the same time the regenerated vessel is further pressurized up to working pressure with the compressed air from the inlet. The cycle starts over again.


Scope of Supply


Air Circuit


  • An inlet pressure regulator to set the inlet pressure to a maximum of 7
  • 2 Pneumatic actuated inlet valves to guide the air to one of the adsorber
  • 2 Pneumatic actuated exhaust valves, one for each adsorber vessel, to release the pressure in the vessel and start the regeneration sequence. The exhaust valves alternate every half
  • An air silencer is connected to the exhaust valves, and reduces the noise level during exhaust / regeneration
  • A Pneumatic actuated equalization valve to bring both adsorber vessels to the same pressure
  • 2 Adsorber vessels, filled with Zeolite Molecular Sieves (ZMS), to adsorb the nitrogen molecules from the inlet air, while oxygen molecules can
  • A pressure relief valve on each adsorber vessel


Oxygen Circuit


  • A Pneumatic actuated equalization valve to bring both adsorber vessels to the same pressure
  • A purge nozzle that allows a small portion of oxygen flow into the depressurized vessel for regeneration purposes
  • 2 Non-return valves at the outlet of each tower to avoid back flow from the outlet of the generator
  • A oxygen feedback line from the oxygen storage vessel to the oxygen sensor of the generator.



Gauges and instrumentation


  • Pressure gauge on each adsorber vessel
  • Oxygen storage vessel pressure transmitter
  • Oxygen purity sensor in nitrogen storage vessel









By properly monitoring your oxygen system, you cannot only decrease downtime but also save energy and reduce maintenance. The oxygen generators come with the following advanced control unit:


User-friendly interface


Available in 32 languages, this graphical 3.5-inch high definition color display with pictograms and LED indicators for key events is easy to use. The keyboard is durable to resist tough treatment in demanding environments.









Comprehensive maintenance display


Valuable items of information displayed include the Service Plan indicator and preventive maintenance warnings. Password protected operation parameters. Process illustration with valve cycle indication, graph shoeing pressure and current operation values.


Remote control and connectivity functions


The controller can be started and stopped locally, via a wired remote switch. Communication boxes are available to receive alarm messages through mobile phones or read-out generator data through Modbus, Profibus (options).

Two analogue parameters (Purity & Pressure), with the opportunity to expand with more analogue components.




Features & Benefits


Cost Savings

  • Low installation and running cost – highly efficient
  • No additional costs such as order processing, refills and delivery
  • Virtually service
  • Quick pay back – often less than a year compared to bulk


Exceptional convenience

  • Continuous availability. (24 hours a day, 7 days a week)
  • Risk of production stoppage due to gas running out is
  • Oxygen purity levels according to your need: from 90% to 95%


Ready to use

  • Only requires a supply of dry compressed
  • Plug-and-play.
  • No specialist installation or commissioning.
  • Oxygen sensor installed as standard