Main Features
– Forced Vital Capacity (FVC), Forced Expired Volume in one second (FEV1), the ratio of FEV1 and FVC (FEV1%), 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.
– Battery power display.
