Dräger Oxylog 2000 - Theory of Operation

Gas Supply
The supply gas (O2 or Air) is cleaned through filter 1 and
reduced to a constant pressure with pressure regulator
2. The 3/2-way magnetic valve 3 "Insp./Exp." opens
inspiratory flow in the rhythm of the set ventilator rate.
The electrically operated flow valve 10 controls the flow.
Supply gas is also routed via 3/2-way valve 4
»CMV /A/C / SIMV/CPAP« to demand valve 6. System
pressure is supplied at »PEEP« valve 8 via magnetic
valve 7 and is monitored by pressure sensor 9.
Theory of Operation
Symbols for Pneumatic Components
Filter
Non-return check valve
Pressure regulator
Pressure limiting valve, adjustable
Pressure limiting valve, non-adjustable
2/2-way valve, pneum. controlled
3/2-way valve, electrically controlled
Injector
Pressure gauge
Pressure sensor
Differential pressure sensor
Theory of Operation
Functional Description of Pneumatics
Operating Instructions Oxylog 2000, SW 3.n
57
P
E
∆P
E
P
E
P
E
E
P
P
E
∆P
E
PEEP
Paw
Paw
Flow
15
14
13
24
2322
6
25 26
5
IPPV/
SIMV/CPAP
4
21
87
10
O
2
AIR
12
3
9
11
12
17
18
19
20
16
Insp./Exsp.
Air Mix/
No Air Mix
100%O
2
50%O2
27
04329033
CMV / A/C
SIMV / CPAP