Breathing Circuit Flow Sensors - GE Datex-Ohmeda Aisys Carestation Reference Manual

Aisys
2.13.10 Breathing
circuit flow
sensors
2-66
Two flow sensors are used to monitor inspiratory and expiratory gas flow:
• The inspiratory flow sensor is downstream of the breathing system inspiratory check
valve.
• The expiratory flow sensor is located at the input to the breathin system expiratory
check valve.
Feedback from both the inspiratory and expiratory transducers is used to:
• supply tidal volumes that make allowances for the effects of fresh gas flow and circuit
compressibility.
• supply signals for expiratory tidal volume monitoring and the breath rate.
P
Ventilator Interface Board
Figure 2-56 • Flow sensors
Expiratory
Gas Monitor
Flow Sensor
Inspiratory
Flow Sensor
P P P
04/08 M1046983