Expiration
Exhaled gas enters the volume reflector. Fresh
gas is added to the circle system from the gas
modules.
Due to the counter pressure in the inspiratory
channel caused by flow from the patient, fresh
gas delivered during the expiration phase will
fill the CO
2
absorber. It will be returned to the
inspiratory channel during the next inspiration.
1
2
3
4
6
7
8
5
9
Direction of gas flow is indicated by the
arrows.
1. Air gas module
2. O
2
gas module
3. N
2
O gas module
4. Vaporizer
5. CO
2
absorber
6. One-way valve
7. Flow transducer
8. Volume reflector
9. Manual breathing bag
FLOW-i 4.2, User's Manual
71
| System functionality |
5 |