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Spirometer a portable testing instrument for pulmonary function, has its own proprietary software and can be used in hospital ward, clinics and home. After pressing the key of Run Test, the mouth is too close to blowtorch while taking deep breath. The hand or body moves too much while testing. There is strong wind from electric fan or air condition on the side while testing. After exhaling all the air, the mouth is so close to blowtorch while taking deep breath that the readout of product continuous to work.
Henan University of Technology
School of Design and Art
Zhengzhou / Henan, China