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KION / KION-i
Fresh gas pressure container
The fresh gas from the V
APORIZER
F
G
P
C
RESH
AS
RESSURE
ONTAINER
diaphragm mounted inside the container. A piston,
that is pushed up by the constant gas pressure
regulated by REG3, affects the diaphragm and the
fresh gas is pushed out from the F
C
. The preset pressure 100 kPa (1.0 bar) on
ONTAINER
REG3 creates a working pressure of 8–15 kPa (80–
150 mbar) inside the F
RESH
PC 1752 D
P
IAPHRAGM
OSITION
container, in combination with one magnetic washer
inside the piston, indicates the position of the piston,
i. e. if the container is almost empty. This level signal
is used to enable the G
AS
gas to the vaporizers. Disabling of the gas modules,
when the container is full, is calculated by CON.
The piston and PC 1752 are matched and delivered
as a spare part kit. They must be replaced at the
same time.
The diaphragm and the piston seal must be replaced
during the "Twelve months maintenance".
Inspiratory fresh gas channel
The fresh gas passes:
• The inspiratory fresh gas flow transducer with its
amplifier PC 1797 F
RESH
units with S/N 00125– 01405).
• The I
F
G
NSPIRATORY
RESH
AS
M
(control function).
OTOR
• The one-way valve OV4. This valve has a built-in
leakage at low pressures and is not appropriate to
use during leakage check.
O
from the block I
NSTANT
2
the fresh gas channel in the I
E382 E392E 061 01 02 02
M
enters the
AGAZINE
above the big rubber
G
P
RESH
AS
RESSURE
G
P
C
.
AS
RESSURE
ONTAINER
S
inside the
ENSOR
M
for a flow of fresh
ODULES
G
F
(PC 1748 on
AS
LOW
V
with PC 1751 S
ALVE
TEP
O
S
is connected to
UPPLY
2
G
B
.
NSPIRATORY
AS
LOCK
Siemens-Elema AB
Inspiratory fresh gas flow transducer:
The gas flows through the flow transducer in two
parallel channels, one large main channel and one
small measuring channel. The main channel is fitted
with a wire mesh net, the resistance of which causes
a certain proportion of the gas to flow through the
measuring channel. The flow through and the
differential pressure across the measuring channel
acts on a small metal disc ("flag") which, via a metal
pin, presses on a small semiconductor strain gauge.
This strain gauge consists of diffused resistors on
both sides of an elastic silicone rod. The resistors are
connected as a part of a Wheatstone bridge, the
other part of which is situated on PC 1797/PC 1748
F
G
F
. The more flow in the channel, the
RESH
AS
LOW
higher the pressure on the strain gauge. The change
in resistance in the Wheatstone bridge is converted
to a corresponding signal voltage.
Cleaning of the flow transducer is described in
chapter "Routine cleaning" in the Operating Manual.
Description of functions
3
3 - 9
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