ACT’s technology and engineering lead the field in accuracy and control. ACT is the only company that can meet these requirements. ACT’s has solved four major issues concerning accuracy measurement, conversion, and control:

    1. Problem: Sensor Drift – When sensors drift out of calibration, readings become inaccurate.

Solution: Years ago, ACT pioneered the use of Sensor Validation™ technology – dual oxygen sensors that compare readings to each other to avoid sensor drift that can lead to errors of 150 meters or more in altitude simulation. ACT is the only company employing this sensor technology.

    1. Problem: Sensor Calibration – Even the best sensors should be calibrated occasionally to ensure accuracy.

Solution: ACT’s sensors automatically self-calibrate without the need for support gases or time-consuming processes.

    1. Problem: Barometric Pressure Changes– Changing barometric pressure can create swings in altitude control of 300 meters or more.

Solution: ACT accounts for barometric pressure changes in its altitude calculations for accurate altitude simulation.

    1. Problem: Altitude Algorithms– Outdated atmospheric tables and algorithms are still used in most systems.

Solution: Recent work in the field has corrected these errors. ACT uses the most advanced algorithms for altitude simulation – the West Equations.

These errors can lead to significant inaccuracies resulting in readings that are neither reliable nor valid. With ACT, you can be assured of the latest engineering advances and precision that meets the highest standards.

If a system creates wide swings in oxygen, it can be neither stable nor accurate. ACT solved significant problems in air management and oxygen control. No other oxygenation system has these features.

ACT takes altitude control seriously. ACT provides a fully integrated system designed from the ground up for altitude simulation. Without ACT’s unique technology, issues of instability, overly optimistic engineering, improper air management, and inadequate oxygen control can easily result a room with nearly no increase in oxygen.


ACT designs its systems for reliability and continuous, uninterrupted use. Here is how we do it:

  • Multiple air units – Each room is served with multiple air separation units. Not multiple rooms served by one. The advantage is obvious. When one air unit is offline for maintenance or repairs, your system continues operating normally. With other systems the entire system must shut down for even routine maintenance.
  • Plug and Play – Each component of ACT’s system – controllers, air units, sensors, air filters, and controlled vents are plug-and-play. The heaviest item is only 26 kg. They can be replaced in minutes, even by untrained personnel.
  • Immediate replacement – There is no need to wait for diagnostics, spare parts, or repair time. Our technicians arrive with a replacement air unit, controller, or sensor package and replace it in minutes.
  • Minimal maintenance – ACT controllers, sensors, and vents are maintenance-free over their entire life. Air units require only filter replacements that take just a few minutes. Your system remains operating even during maintenance.
  • No oil changes – unlike some compressors, ACT air units employ oil-less air compressors and never need oil.
  • Redundancy – ACT systems are engineered for more than enough capacity so that the failure of an air unit serving a room does not shut down service even for the room served.
  • On-site replacement parts – ACT can provide a spare controller, sensor box, and air units to hold on-site for immediate replacement.

Safety is integral to ACT systems. We do not depend on hardware or software for safety. ACT systems employ benign failure modes in every design. Safety is assured even in the event of operator error or a mechanical, electrical, or software failure.

  • High-Pressure Risk: ACT does not employ high-pressure tanks or high-pressure compressors in human-occupied systems. ACT air separation units use low-pressure compressors, and ACT systems do not store air in pressure vessels.
  • Electrical: All electrical components meet the highest international standards and are C.E. marked.
  • Alarms: Alarms alert occupants and administrators in the event of oxygen or CO2 going out of range.
  • Oxygen Safety: ACT systems do not allow hypoxic air build up in any part of the system.
  • Sensors: Sensors constantly self-validate for accuracy and safety.
  • Air Quality: ACT systems meet OSHA standards for air quality
  • Fire Safety– ACT takes care of fire safety and meets NFPA standards for fire-safe oxygen.
  • Monitoring – ACT even monitors environmental conditions in mechanical rooms and shuts off equipment when conditions warrant.
  • History – In millions of hours of use, ACT has never had a safety incident of any kind.