Product Description
- Rechargeable lithium battery with battery power display
- Automatic power off when there is no operation in one minute
- Forced Vital Capacity [FVC], Forced Expired Volume in one second [FEV], the ratio of FEV1 and FVC [FEV1%]. Peak expiratory flow (PEF), 25% flow of the FVC [FEF25], 75% flow of the FVC [FRF75] and average flow between 25% & 75% of the FVC [FRF2575] can be measured and display.
- Besides, the testee condition can be shown by the ratio of the measured value and the predicted value.
- Display: Flow rate -Volume chart, volume —time chart
- Data memory, delete, upload and review
- Trend chart display
- Scalering [Calibration]
- Information prompts when volume or flow goes beyond the limits
- Ratio of FEV1 and FVC can be measured
- Software interface and trend chart display
- Battery backup: 4 hours
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