User's Manual

15
6.3.2 Volume calibration
Figure 9 Calibration homepage Figure
1) Enter environmental information before calibration: temperature, humidity, pressure,
altitude. Click < F6 > to save the updated environmental conditions.
2) Standard calibration measurement steps:
 Select Calibration on the home page and enter the calibration interface. After selecting
the calibration volume " 3L ", click the " Standard calibration " button in the upper right
corner to enter the standard calibration page.
 After entering the environmental information in the upper right corner, press the "F1
Start" button, use the 3L calibration pump to smoothly move the calibration pump handle,
do not stop during a single push or pull, and ensure that each push and pull is in place.
"Inspiratory and expiratory sliding times the number reached, the system can
automatically prompt to stop operation", the push-pull tube stop after scaling back into
place. Click the "F3 Stop" button to save the measured data.
 Page jumps to the calibration test result page. If the capacity in the measurement
curve is within the allowable range of 10%, the standard calibration is passed; if the
capacity exceeds the limit of 10%, you need to perform the high, medium, low-speed
standard calibration test again. Usually after multiple calibrations, the corresponding
coefficients can be re-calibrated according to the calibration to reduce the accuracy error