Automatic calibration of the O
2
/flow sensors
Sidestream calibration of the O
2
measurement
(O
2
sampling) and flow measurement are performed
automatically.
Automatic flow calibration is performed during the first
breaths after starting ventilation. There is therefore no
cause for panic if the measured values for the minute
ventilation still appear in grey (i.e. uncalibrated values,
see page 13) immediately after the self-test.
CO
2
measurement must function correctly before
automatic flow calibration can be performed, otherwise
the flow sensor must be calibrated by hand.
Manual calibration of the O
2
sensor
The O
2
sensor must be calibrated by hand if
O
2
measurement has been set in the inspiratory line
(see “Parameters“ on page 53).
Calibrate O
2
sensor with 21% O
2
by volume = air
– The O
2
sensor can be calibrated while flow calibration
is still in progress.
1
Remove the sensor from the inspiratory valve and
expose it to the ambient air – place it on the table and
wait at least two minutes.
2
Use the rotary control to select »
calibrating
« in the
»
Standby/Configuration
« menu and press to confirm.
●
Move the cursor frame to
»
O
2
sensor
21Vol.%
« by means of the rotary control.
●
Press rotary control to confirm:
calibration starts.
1
Then plug O
2
sensor onto the inspiratory valve again.
✔
Tick off in checklist.
29
Preparing for use
Checking readiness for operation with checklist
Automatic calibration of the O
2
/flow sensors
Manual calibration of the O
2
sensor
The following symbols are used:
?
= Enquires whether an action has been performed
or a setting made.
u
= Waiting period. The selected test step is being
performed by the machine.
✔
= The action has been completed successfully or
is not required.
Standby / Configuration
Alarms inactive!
calibrating
O
2
-sensor
21 Vol.%
flow sensor
Ventilator-
start up test
more
✓
Calibrate O
2
sensor after
replacing sensor and after 24 hrs.
Detach O
2
sensor and expose
for 2 min. to ambient air.
confirm !
✓
✓
2
GA
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