Operation
42
Calibrating
The saved calibration/zeroing values remain stored even when
the machine is switched off.
Automatic calibration of the pressure sensors
The pressure sensors for measuring the airway pressure
are calibrated automatically.
Automatic calibration of the flow sensor
The flow sensor will be automatically calibrated in the following
circumstances:
— when the apparatus is switched on
— every 24 hours during operation
— after changing the flow sensor
— after medicament nebulisation
— after bronchial suction
— after changing the O2 concentration.
Savina uses a full inspiration phase for calibration. Short
inspiration times are extended to about one second.
Message in the information line on the screen:
Flow calibration in progress
After calibration is complete, the following message appears in
the information line:
Flow-calibration ok
If calibration is unsuccessful, the following message appears:
"Flow-calibration failed". The expiratory part of the flow curve
does not appear and no measured values are displayed for VTe,
MV or PEEP.
Then
● Exchange flow sensor.
● Always pay special attention to successful flow
calibration. Without a usable flow measurement,
neither O2 calibration nor O2 enrichment for bronchial
suction is possible.
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