Calibration; Calibrating O 2 Sensor - Dräger Evita 4 Instructions For Use Manual

Intensive care ventilator. software 4.n
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Calibrating
The last calibration/zeroing values remain stored until the
next calibration/zero calibration, even when the machine
is switched off.
Calibration of the pressure sensors for measuring the
airway pressure is automatic.
There is an automatic calibration of flow and O
sensor
2
daily.
Manual calibration of the flow sensor can be performed
at any time, even during ventilation.
Manual calibration of the O
sensor can be performed at
2
any time, even during ventilation. The applied O
concen-
2
tration is not affected by calibration.
The calibration of the CO
sensor can be checked during
2
ventilation.
Calibrating the O
sensor
2
– Before operation, during the device check.
– After replacing the O
sensor
2
(wait for the 15-minute warm-up time of the O
sensor).
2
– If the measured value and set value deviate from each
other by more than 2 Vol.%.
The O
sensor can be calibrated during ventilation.
2
Start calibration:
Press »Calibration« key.
Display (example):
Touch the »O
« screen key.
2
The »LED« in the screen key changes colour to
yellow.
Message in the help line at the bottom of the screen:
O

calibration

2
After calibration is complete, the yellow »LED« in the
screen key goes out.
Operation
Calibrating
Page 97

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