Spirometry  

Explanation about basic terms of spirometry including a list of helpful links.

Ultrasonic Flow Measurement

Flow measurement ndd Medical Technologies uses "ultrasonic transit-time" measurement for the determination of flow velocity and molar mass of the air in the breathing tube. The page Flow Measurement describes the technology in more detail.

Flow measurement Spirometry has never been easier. The page TrueFlow describes the technology in more detail.

Flow measurement The page MolMass describes the technology in more detail.

Flow measurement Lung function testing in a new age; opening the way for new dimensions. The page UPG describes the technology in more detail.

ASIC

ASIC The development of an Application Specific Integrated Circuit (ASIC) allowed ndd the inexpensive implementation of the ultrasonic transit-time flow measurement. The page Electronics gives some insight into the technology used.