Dräger Evita 4 - Checking;Calibrating CO 2 Sensor; CO 2 Zero Checking

If Capno Plus option is installed:
Checking / calibrating CO
2 sensor
The CO2 sensor is works-calibrated and can be used
without further calibration on any Evita 4 unit.
A CO2 zero calibration is performed as part of the device
check.
Calibration of the CO2 sensor is only required if:
– 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.
CO2 zero calibration
– if the device requests CO2 zero calibration with the
screen message: CO2 zero calibration?
– if the CO2 curve no longer returns to zero after each
inspiration
– before each calibration test, page 102 onwards
– before each CO2 calibration, page 105.
● Switch on Evita 4. Wait about 3 minutes for
completion of the warm-up phase of the CO2 sensor.
After about 3 minutes, the measured values will be within
the specified accuracy.
● Press the »Calibration« key.
Display (example):
● Touch the »CO2« screen key.
● Touch the »Zero« screen key.
Message:
Park CO2 sensor
● Confirm = press rotary knob.
100
Operation
Calibrating
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