Instructions for use Fabius Tiro SW 3.n 119
Monitoring
Consequences of incorrect O2
calibration
If the O2 sensor is not correctly calibrated, it can
lead to faulty measurements. With an air mixture
with too high or too low O
2 concentration, Fabius
does not perform a calibration completely.
However, if the deviating concentration is within
defined limits, Fabius completes the calibration
even with non-optimal conditions. This can have
the consequence that the displayed, measured
sensor values indicate an O
2 percentage that is
higher or lower than the actual percentage. During
the entire calibration, it must therefore be ensured
that the O
2 sensor is only exposed to ambient air.
The diagram illustrates the correlation between the
air mixture during calibration and the accuracy of
the oxygen measurement.
A Displayed O
2 percentage
B Actual O
2 percentage
C During calibration, the sensor was exposed to
ambient air with <21 % O
2. Therefore, the
displayed O2 percentage is higher than the
actual O
2 percentage.
D Correct calibration with ambient air (21 % O
2)
during the entire calibration time period.
Displayed O
2 percentage = actual O2
percentage
E During calibration, the sensor was exposed to
ambient air with >21 % O
2. Therefore, the
displayed O2 percentage is lower than the
actual O
2 percentage.
Deactivating the O2 monitoring
If Fabius is configured by DrägerService for
operation with deactivated O2 monitoring, the
following functions of the O
2 monitoring, are
deactivated:
– Parameter field for O
2 monitoring
– Setting of O
2 alarm limits
– Calibration of O
2 sensor
– Alarms for the inspiratory O
2 concentration and
the O2 sensor
The message No Integrated O
2 Monitoring! is
displayed in the O
2 monitoring window (A).
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NOTE
If the internal FiO2 monitoring is deactivated, an
external FiO2 monitoring must be available in
accordance with general safety standards.
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