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Operation
Calibrating
● Enter these concentration values with the screen
knobs.
Touch the relevant screen knob.
Enter the concentration = turn rotary knob.
If the calibration gas consists only of CO2 and N2, set
the O2 and N2O concentrations to 0.
● Touch the »Start« screen key.
During calibration, the following message is displayed on
the screen:
CO2 calibration. Please wait
Evita 4 carries out calibration and confirms with the
message:
CO2 calibration ok
Failed calibration is indicated by the device with the
message:
CO2 calibration interrupted
or
CO2 calibration not ok
Repeat the calibration of the CO2 sensor.
Resetting CO2 calibration
– If calibration with calibration gas was unsuccessful,
the factory-set calibration value can initially be used.
● Press the »Calibration« key.
● Touch the »CO2« screen key.
● On the CO2 calibration side, touch the »Cal.« screen
key and then touch the »Alarm Reset« screen key.
After about 5 seconds, resetting is complete, and the
factory-set calibration value is active.
Recover the correct calibration as soon as possible!
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