Portable Spirometer, Voltage : 220V

Features

• Forced Vital Capacity (FVC), Forced Expired Volume in one second (FEV1), the ratio of FEV1 and FVC (FEVI%), Peak expiratory flow (PEF), 25% flow of the FVC (FEF25), 75% flow of the FVC(FEF75) and average flow between 25% and 75% of the FVC(FEF2575) can be measured. Besides, the testee condition can be shown by the ratio of the measured value and the predicted value.
• Flow rate-volume chart, volume-time chart display.
• Data memory, delete, upload and review.
• Trend chart display.
• Scaling(Calibration).
• Information prompts when volume or flow goes beyond the limits.
• Automatic power off when there is no operation in one minute.
• Rechargeable lithium battery and with charging tips.