User's Manual

10
Before using the equipment every day, a standard calibration and verification are required.
In addition, a 3- flow calibration and verification is performed once a week. For specific
methods, please refer to the calibration method in the corresponding software instructions.
4.3.2 Test mode selection
Press the left or right button on the device to select the test mode, and press the middle
button to enter the corresponding test mode.
4.3.3 Start test
After entering the test mode interface, press the middle button and the device will give a
voice prompt to start the test.
Caution:
Do not expect sputum or cough into the device during measurement, otherwise the
performance of the device may be affected.
4.3.4 View test records
In the test mode interface, select to view the last result, press the left button to view the
historical data in sequence, and press the right button to view the test curve.
4.4 Pulmonary ventilation function measurement method
The device contains three measurement modes: forced vital capacity test, slow vital
capacity test, and maximum minute ventilation test.
After selecting the measurement mode, short press the function key, the display shows the
blowing interface, and after hearing the prompt sound from the device, hold the
mouthpiece to ensure that there will be no air leakage when blowing. Use the
corresponding breathing method to measure, see below for details.
Caution:
1) In order to ensure the accuracy of measurement results, users are required to
understand and master the blowing method of each measurement mode.
2) Please keep sitting and standing and keep your body stable during measurement.
3) Do not swing your head forcefully with your body when blowing, which will affect the
measurement results.
4.4.1 Forced vital capacity test
1) Practice forced breathing exercises according to the instructions of the technician or