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126
Instructions for Use Carina SW 3.n
Description
Mode of operation
Functional units
1
Air inlet
2
Blower
3
Measuring unit
4
Expiratory valve
5
Leak valve
6
Oxygen metering unit
7
Oxygen measuring unit
8
Oxygen connection LPO
9
Oxygen connection HPO
The ambient air passes through the inlet filter
(HEPA filter) (
F1
) and is compressed in the blower
(
2
). The level of pressure depends on the proces-
sor-controlled blower speed. The small mass of the
blower wheel allows rapid speed changes and
hence high flow dynamics. In the measuring unit (
3
)
the compressed air is guided through a
restriction (
R2
).
The resulting difference in pressure is measured by
the flow sensor (
DPS1
) and used for automatic flow
control.
HPO
control
board
Sensor
board
6
7
3
Patient
Motor
blower
1
CV1
F1
CV2
pilot line for exp. valve
4
CV4
5
R1
(e.g. Silent
Flow)
CV3
Inlet
labyrinth
Outlet
labyrinth
8
PS1
E
p
PS2
E
p
DPS1
R2
E
Δ
p
AT2
EV
LV
AT1
V2
V3
F3
V5
F6
F5
9
R4
DPS3
E
Δ
p
CV6
CV8
V6
V7
CV9
2
V1
Содержание Drager medical Carina
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