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Pulmonary Function System (PFS)
Hardware Type
Measurement Devices, Pulmonary

Photo Gallery

The Pulmonary Function System (PFS) is one of the major components of the Human Research Facility (HRF) Rack 2. The PFS is facility class research hardware consisting of:

  • The Photoacoustic Analyzer Module (PAM) developed by the European Space Agency (ESA).
  • The Pulmonary Function Module (PFM) developed by ESA.
  • The Gas Analyzer System for Metabolic Analysis Physiology (GASMAP) developed by NASA.
  • The Gas Delivery System (GDS) developed by NASA.

The PAM determines the concentration of seven respired gas components that also may contain significant concentrations of nitrogen and water vapor utilizing two photoacoustuc analyzers and the oxygen analyzer mixture.

The Pulmonary Function System (PFS) when operated together with the GASMAP or the Photoacoustic Analyser Module (PAM) plus the Gas Delivery System (GDS) forms a respiratory facility capable of a wide range of respiratory and cardiovascular measurements. These include:

  • Breath-by-breath measurements of VO², VCO², VE
  • Diffusing capacity of the lung for CO
  • Expiratory Reserve Volume
  • Forced Expired Spirometry
  • Functional Residual Capacity
  • Respiratory exchange ration VO² /VCO²
  • Residual Volume
  • Total Lung Capacity
  • Tidal Volume
  • Alveolar Ventilation
  • Vital Capacity
  • Volume of pulmonary capillary blood
  • Dead-space ventilation
  • Cardiac Output
  • Numerous other specialized tests of pulmonary function

The PFM consists of the:

  • The Respiratory Valve Unit (RVU)
  • Associated flow-meters
  • Rebreathing bag, etc.
  • Electronics unit.

The RVU hardware is locker-stowed and deployed in front of the HRF, and is interconnected to the PFS electronics unit, to the GASMAP or PAM and to the GDS during operation.

Versions of this Hardware
+ Version Used Onboard the International Space Station (ISS)