Digital Plan Measure
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What are the different types of flow sensors used in a Spirometer to measure the volume of air flowing in?
im planning to design a Digital Spirometer.....
Exhaled air spins a small light turbine. Then there's an optical interruption sensor. IR transmitter on one side of the turbine and IR receiver on the other. Turbine blades interrupt the beam.
By the way, there are digital spirometers on the market already.
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