H11-EN Calibration P
AGE
20/31
5
Select the Volume tab.
Select the device (if there are several modules connected to the same computer).
Define the calibration syringe volume (by default, it is set to 3 liters).
Click on Calibrate.
Wait for the zero measurement (red cross).
When the green check mark is displayed, the device is ready to calibrate. The flow
transducer is zeroed and signal displayed. Be sure the voltage output of the flow
transducer is between ± 100 mV.
Connect the 3 liters syringe to the pneumotachograph.
Perform several calibration syringe strokes (being sure to include the entire volume,
end to end of the syringe) at a medium constant flow rate.
After 5-6 full strokes of the syringe, the calibration results appear. Click on Close to
accept the new calibration data or Cancel to perform a new calibration.
Analyse the results of the calibration.