Professional Spirometer (Lung function machine) Specification Items Technique specification Display Screen Diagonal line 5.7inches Monochrome LCD Resolution 320*240 Control Standard:UTILITY KEY,SVC KEY,FVC KEY,MVV KEY,PRINT KEY,10WORDS KEY,[ ]KEY, KEY,START KEY,STOP KEY, KEY, KEY, KEY, KEY Light alarm Measurement means Flow velocity detection: pressure gradient pneumatic flow sensor Capacity detection: flow velocity integral measuring range Capacity range: 0L ~ 9L Flow velocity range: 0 ~ 14L / s measurement accuracy Capacity: 0L ~ 1.6L (± 50ml) 6L ~ 9L (± 3%) Flow rate: 5% or 0.2L / s Respiratory rate: 4 / 20 ~ / min (± 1 / min) 20 / 60 / min (error: ± 5%) measuring timelimit and degree Vital capacity: every 50s, measuring 3 FVC: per second, 25s, measuring 3 The maximum ventilation volumn: every 12 seconds, measuring 3 Paper Recorder Method: dot matrix Level Resolution Ration: 8 d/mm(speed 25mm/s) Uprightness Resolution Ration: 8 d/mm Wave Channels: 1 Paper Width: 110mm(1.97inches) Paper Length: 15m(100inches) Formfeed Speed: 12.5,25 and 50mm/s(±2%) Power supply AC: 100V~240V DC: rechargeable Nickel-metal hydride (NI-MH), 14.4-volt, 1.8 amp hour Fuse 100V~240V AC:F2A250V,5*20mm Safety classification IEC60601-1 class I, type CF
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