Digital Breathing Machine Applicable standards

Most test standards around the world are still based on a simple sine wave breathing pattern – a legacy of older mechanical breathing machines incapable of anything else. Real world breathing patterns are not sine waves – unbalanced inhalation and exhalation are the norm.

Uneven inhale/exhale
Reproduction of uneven inhaling and exhaling

Our machine is capable of a simple sine wave output of between 0 – 210 (6Lx35) litres minute volume – well beyond human capabilities. Plus, because it is not a purely mechanical machine, it can reproduce any waveform shape required, as long as the inspiration volume matches the expiration volume. And this obviously makes the machine suitable for development work as well as for standards testing.

The machine can be used for wide range of testing. It will fulfill the requirements of the breathing machine called upon in the test procedures detailed in the following list of applicable standards, as well as many others.

  • EN136 – Full face masks
  • EN137 – Self contained open circuit compressed air breathing apparatus  with full face mask
  • EN140 – Half masks and quarter masks
  • EN149 – Filtering half masks to protect against particles
  • EN270/EN14594 – Compressed air line breathing apparatus incorporating a hood
  • EN402 – Lung governed self contained open circuit breathing apparatus with full face mask or mouthpiece assembly for escape
  • EN403 – Filtering devices with hood for self escape from fire
  • EN404 – Filtering devices for self rescue from carbon monoxide
  • EN405 – Valved half masks to protect against gases or gases and particles
  • EN1146 – Self contained compressed air breathing apparatus incorporating a hood for escape
  • EN12941 – Powered filtering devices incorporating a hood or helmet
  • EN12492 – Power assisted filtering devices incorporating full face, half or quarter masks
  • EN13794 – Self contained closed circuit breathing apparatus for escape
  • and many more…