TrueFlow technology measure the flow of air in and out of the patients' lungs This . This
technology eliminates problems associated with traditional methods of flow measurement and
helps make it extraordinarily fast, reliable, accurate and error free. There are no moving parts,
no codes to enter, no screens to catch sp p utum, and no disposables to calibrate. The ultrasonic
flow measurement is independent of gas composition, pressure, temperature, and humidity
thus eliminating errors due to these variables.