Checking/Calibrating Co 2 Sensor; Co 2 Zero Checking - Dräger Evita 4 Instructions For Use Manual

Operation
Calibrating
If Capno Plus option is installed:
Checking / calibrating CO
The CO sensor is works-calibrated and can be used
2
without further calibration on any Evita 4 unit.
A CO zero calibration is performed as part of the device
2
check.
Calibration of the CO sensor is only required if:
2
– on checking the calibration with a test filter or with
test gas, the specified test values are not met
and
– on half-yearly device inspections.
The calibration check or calibration can be performed
during ventilation.
CO zero calibration
2
– if the device requests CO
screen message: CO zero calibration?
2
– if the CO curve no longer returns to zero after each
2
inspiration
– before each calibration test, page 102 onwards
– before each CO calibration, page 105.
2
Switch on Evita 4. Wait about 3 minutes for
completion of the warm-up phase of the CO
After about 3 minutes, the measured values will be within
the specified accuracy.
Press the »Calibration« key.
Display (example):
Touch the »CO « screen key.
2
Touch the »Zero« screen key.
Message:
Park CO sensor
2
Confirm = press rotary knob.
100
sensor
2
zero calibration with the
2
sensor.
2