Hypoxic Gas Generators, altitude-equivalent oxygen from 3,000–40,000 ft.

Why on-demand hypoxic gas generation matters

We use an intelligent desiccant dryer to dry the input oil-free compressed air, and air filters to purify the air, before sending it to a Membrane Type Nitrogen Generation system to generate nitrogen. That nitrogen is mixed with compressed air through mass flow controllers, and in a closed loop with oxygen purity sensors, to generate the required hypoxic gas.

It delivers high quality, high grade hypoxic gas, at flow rates and purities that can meet the demands of any hypoxia research or altitude training application. Regardless of the specific application, the membrane-type nitrogen generator provides an energy-efficient, low-cost hypoxic gas supply method.

Working principle

The process is a single, continuous, closed-loop cycle from raw compressed air to verified hypoxic gas at the outlet:

• Compression & drying: An in-built oil-free air compressor supplies compressed air, which passes through an intelligent desiccant dryer to remove moisture.
• Filtration: Air filters purify the dried compressed air, removing dust, oil, and particulate contaminants before it reaches the membrane system.
• Membrane nitrogen generation: A Membrane Type Nitrogen Generation system separates nitrogen from the purified compressed air.
• Mass flow controlled mixing: The generated nitrogen is mixed with compressed air through mass flow controllers, proportioning the blend to the target oxygen concentration.
• Closed-loop oxygen sensing: Oxygen purity sensors continuously verify the blended gas against the required hypoxic gas specification.
• Regulated delivery: A pressure reducing valve regulates the final output, delivered at a variable pressure of 14 to 110 PSI, with flow and purity shown on the digital display.

Technical specifications

Key features, in detail

1. Membrane-based hypoxic gas generation

Membrane Type Nitrogen Generation blended with compressed air eliminates dependence on pre-mixed gas cylinders, generating hypoxic gas on demand at the point of use.

2. Microprocessor-based intelligent control

Microprocessor-based controlling governs on-demand applications, adjusting the nitrogen/air blend automatically to reach and hold the requested oxygen concentration.

3. Digital display for flow and purity

A touchscreen digital display shows live flow rate and oxygen purity, giving operators continuous visibility of chamber supply conditions.

4. Wide oxygen output range

Oxygen output varies from 6.33% to 21%, corresponding to an altitude-equivalent range of 3,000 to 40,000 feet, at a maximum flow rate of 50 LPM (50 SLPM).

5. Safety audio alarm

A safety audio alarm activates at 6.33% oxygen purity — the system’s rated minimum — alerting operators immediately if the blend reaches this threshold.

System components & their functions

The Hypoxic Gas Generator consists of the following key components:

• Oil-free air compressor (in-built): Supplies clean compressed air as the source gas for the entire process.
• Intelligent desiccant dryer (in-built): Removes moisture from the input compressed air.
• Air filters (FESTO / SMC, Japan): Purify the dried air before it reaches the membrane.
• Membrane nitrogen generation module (Parker & other international sources): Generates nitrogen from filtered compressed air.
• Mass flow controllers (MFC): Proportion the nitrogen-and-air blend to the target oxygen concentration.
• Oxygen purity sensors: Closed-loop sensing verifies blended gas purity continuously.
• Pressure reducing valve (PRV): Regulates final output pressure, variable from 14 to 110 PSI.
• Touchscreen HMI & digital display: Microprocessor-based control panel showing flow and oxygen purity, with audio alarm.

Applications

The Neometrix Hypoxic Gas Generator supplies hypoxia chambers used across aviation physiology and hypoxia research settings. The gallery images on this page show the two chamber types it has supplied — a hypoxia chamber for animal studies, and a hypoxia chamber for human studies — both interfaced to the generator via the Hypoxicator gas-delivery unit. Typical applications include:

• Human hypoxia physiology research: Controlled, repeatable altitude-equivalent oxygen environments for study of human physiological response to reduced oxygen.
• Animal hypoxia studies: Pre-clinical research chambers requiring precise, closed-loop oxygen control.
• Aircrew hypoxia awareness training: Familiarizing aircrew with hypoxia symptoms under safe, supervised, controlled conditions.
• Aviation medicine & aerospace physiology labs: Supporting research and training programs that require altitude-equivalent gas on demand.

Conclusion

The Neometrix Hypoxic Gas Generator is a membrane-based, closed-loop system built to deliver precise, on-demand, altitude-equivalent hypoxic gas — without the logistics burden of pre-mixed gas cylinders — for hypoxia awareness training, aviation physiology research, and human and animal hypoxia studies.