Dräger Babylog 8000 Technical & Service Manual page 24

Function description
units with software version 1.0.
The limit value is (Pinsp + 5 mbar).
If this limit value is exceeded, the microprocessor system reads in the actual measured value at 8.3-ms
intervals (sampling frequency). The limit value (Pinsp + 5 mbar) is subtracted from each of the actual
measured values and entered in a summer.
As soon as the sum of 40 mbar (stenosis 1) is reached, Babylog switches over from inspiratory phase to
expiratory phase. If a sum of 70 mbar is reached, despite of the safety measure (stenosis 1), the system
will carry out an emergency venting.
Paw
Pinsp + 5 mbar
Pinsp
PEEP
Fig. 6: Dynamic stenosis limit
22
Dräger Medical AG & Co. KGaA
8,3
8,3
8,3 ms
6173.3
Σ = 40 mbar Stenose 1
Σ = 70 mbar Stenose 2
time
Zeit
Babylog 8000