EasyOne™ Technical Manual
The EasyOne™ spirometer uses digital ultrasonic flow measurement technology for fast, accurate, reliable operation. The EasyOne™ was designed for full range testing in primary care, specialty physician, industrial and hospital settings. It offers automated comparison to predicted values, pre- and post Broncho Dilator comparisons, interpretation of results and test quality control that automatically assesses patient effort offering helpful suggestions to obtain optimum results. Optional easy to read and interpret color printout with graphic display for instant test review is available. The single-patient-use spirette minimizes risk of cross-infection.
This EasyOne™ flow sensor is equipped with two ultrasonic transducers, mounted at different sides of the flow channel. In order to determine gas flow (and molar mass), ultrasonic pulses are transmitted in up- and downstream direction. Precisely measured transit-times are the basis for determining flow and molar mass. The following figure shows a diagram of the flow sensor including its internal sound transmission path.
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