ATA stands for atmospheres absolute. It measures the total pressure inside a hyperbaric chamber, including normal air pressure. At sea level the pressure around us is 1.0 ATA, about 101 kPa.
What the numbers mean
- 1.0 ATA: normal air pressure at sea level.
- 1.5 ATA: one and a half times normal pressure, a common setting for hard shell wellness chambers.
- 2.0 ATA: twice normal pressure; the Alteon AL3V36 lying chamber works at up to 2.0 ATA.
- 3.0 ATA and above: medical territory, in certified clinical chambers such as modular multiplace systems.
Why pressure matters
Under higher pressure, more oxygen dissolves directly into the blood plasma when a person breathes concentrated oxygen. That is why chamber pressure is the first specification buyers compare. Higher pressure also means a stronger, heavier cabin and more careful planning.
Choosing a pressure
Read 1.5 ATA vs 2.0 ATA for how pressure maps to gyms, wellness centres and clinics, and browse the Alteon hyperbaric chambers TechFit supplies in India.