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Airway gas (CO2)
17-7
3.
Turn on the power. For maximum accuracy, let the monitor warm up for 30 minutes. The
menu item
Gas calibration
remains gray as long as the message ‘Calibrating gas sensor’
is displayed.
4.
Press the
Airway Gas
key and select
Gas calibration
.
5.
Wait until ‘Zero ok’ and then ‘Feed gas’ messages are displayed after each gas on the
screen.
6.
Open the regulator and feed calibration gas until the message ‘Adjust’ is displayed, then
close the valve. If you use an older brass regulator, the feeding pressure should be
adjusted between 5 and 7 psi.
7.
Check that the displayed gas values match the values on the calibration gas container.
NOTE: Set the CO
2
level according to the gas, for example with 755580, set the CO
2
level to 20%.
NOTE: If an error occurs during calibration or if no gas is fed, the highlight goes
automatically over the item
Recalibrate
and the text ‘Calibr. error’ is displayed after
each gas. Push the ComWheel to perform a new calibration.
If adjustments are required:
•
Turn the ComWheel to highlight the first gas to be adjusted and then push the ComWheel.
•
Turn the ComWheel until the displayed value matches the desired value in the gas bottle
and push it again.
Repeat these two steps for each gas.
The use of an old regulator with the new aerosol cylinders requires an adapter available from
GE Healthcare. For ordering details, see the "Supplies and Accessories" catalog.
If the message ‘Zero error’ is displayed, press the
Normal Screen
key and repeat the
calibration procedure. If the problem persists, contact authorized service personnel.
The monitor performs autozeroing after start up. The autozeroing intervals are: 4 min, 15 min,
30 min and 60 minutes after start-up, thereafter every 60 minutes.
NOTE: If you are using separate gas cylinders, calibrate each gas separately.
The time of the last calibration is shown at the bottom of the menu page.
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