14Page of 36
ENG
DT_0006 Issue 15
A Global Leader in Respiratory Solutions
3. Press the ‘Enter’ key to bring you into the Calibration screen and
follow the on-screen instructions.
4. If a Calibration report is required select the Report option.
Press the ‘C’ key to exit the Calibration screen.
Note: An Accuracy check must be done on the same day as the device is
calibrated.
Precision Syringe
1. Select ‘Precision Syringe’ from the Calibration screen.
2. Select the volume of the calibrated syringe from the drop down list.
3. Enter the syringe reference number using the touch panel keypad.
4. Press Enter to save the new volume entered and return to the
Calibration screen. Press C to cancel the changes made and return
to the Calibration screen.
Linearity Check
1. Select ‘Linearity’ from the Calibration screen. (Note: Pressing the C
key will exit the Linearity Check screen.)
2. Using a 3L calibrated syringe, pump air through the owhead to
bring it to ambient temperature.
3. If the owhead has very recently been used for testing or has
come from a cold environment, its temperature should be
equilibrated with ambient by pumping air.
4. Enter environmental data if prompted to do so.
5. Press Enter to open the Linearity Check screen.
6. Pump air into the owhead at a slow rate of < 2L/s. Immediately
withdraw the syringe at a slow rate. This manoeuvre should
show on the graph between the two red lines. If it is a correct
manoeuvre the table on the screen will show ‘Test 1’, and the FVC
and FIVC values will be updated. Repeat for the slow rate three
times.
7. Repeat the procedure for a medium rate >2L/s and < 6L/s. This
manoeuvre should show on the graph between the red and green
lines. If it is a correct manoeuvre the test number and the FVC and
FIVC values will be updated in the table. Repeat for the medium
rate three times.
8. Repeat the procedure for a fast rate >6L/s. This manoeuvre should
show on the graph between the outside green lines. If it is a correct
manoeuvre the test number and the FVC and FIVC values will be
updated in the table. Repeat for the fast rate three times.
9. When all the manoeuvres are complete press Enter for the result.
10. If a Linearity Check report is required select the ‘Report’ option.
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