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Siemens-Elema AB
Description of functions
Servo
…
E382 E407E 061 01 01 02
3 - 6
3
Expiratory section
Functional Main Blocks diagram marking: “
E
”
The main block E
XPIRATORY
S
ECTION
conveys the
breathing gas from the patient breathing system to
the E
XPIRATORY
O
UTLET
. It comprises:
• Measurement of expiratory flow
• Connection for measurement of expiratory
pressure.
• Controlling element for the regulation of expiratory
pressure.
Expiratory cassette
The expiratory gas conveying parts and PC 1786
E
XPIRATORY
C
HANNEL
C
ASSETTE
are integrated into one
part – the E
XPIRATORY
C
ASSETTE
– which can be easily
removed for cleaning or exchange. See Servo
…
Ventilator System – User’s manual.
The expiratory cassette can be interchanged between
different Servo
…
systems. Always perform a Pre-use
check after exchanging the expiratory cassette.
An ID PROM is integrated into each expiratory
cassette. Its ID information and remaining lifetime can
be read by the Servo
…
System.
Expiratory inlet
22 mm / 10 mm tube connector for the expiratory
tube of the patient breathing system. The inlet is
designed to make condensed water drip out and
allow use of a water trap for such water to be
collected. Expiratory inlet bacteria filter can be
connected to protect the cassette from contamination.
Heating foil
An electrical H
EATING
F
OIL
applied on the outside of the
expiratory pipe where the U
LTRASONIC
F
LOWMETER
is
situated. The purpose of the H
EATING
F
OIL
to reduce
condensation and maintain a stable temperature in
the expiratory gas.
Ultrasonic flowmeter
The U
LTRASONIC
F
LOWMETER
is a measuring device for
the expiratory gas flow, using ultrasound technique
with two ultrasonic transducers/recievers.
The measuring process is controlled from the main
block PC 1784 E
XPIRATORY
C
HANNEL
.
The left hand side transducer is sending out ultrasonic
sound that is reflected against the inner wall of the
expiratory channel. The ultrasonic sound is recieved
by the right hand side transducer now acting as a
reciever. The time from sending to recieving
ultrasonic sound in downstream expiratory gas flow is
measured.
Then the right hand side transducer (earlier recieving)
is sending out ultrasonic sound upstream the
expiratory gas flow. The ultrasonic sound is recieved
by the left hand side transducer now acting as a
reciever. The time from sending to recieving
ultrasonic sound in upstream expiratory gas flow is
measured.
The time difference between the downstream and
the upstream time measurements provides flow
information.
A temperature sensor inside the cassette measures
the expiratory gas temperature. This temperature
measurement is also used when calculating the
expiratory flow.
SVX9121X
Expiratory pressure
tube connector
Bacteria
filter
Heating
foil
PC 1786
Expiratory
channel cassette
Ultrasonic
transducer
Ultrasonic
transducer
Inlet
Outlet
SVX9143X
Содержание Servo i
Страница 1: ...Servo Service Manual E382 E407E 061 01 01 02 ...
Страница 2: ...Siemens Elema AB Important Servo E382 E407E 061 01 01 02 1 2 Notes ...
Страница 8: ...Siemens Elema AB Important Servo E382 E407E 061 01 01 02 1 8 Notes 1 ...
Страница 16: ...Siemens Elema AB Introduction Servo E382 E407E 061 01 01 02 2 8 2 Notes ...
Страница 44: ...Siemens Elema AB Service procedures Servo E382 E407E 061 01 01 02 5 10 5 Notes ...
Страница 64: ...Siemens ElemaAB Preventivemaintenance Servo E382 E407E 061 01 01 02 7 10 7 Notes ...
Страница 65: ...E382 E407E 061 01 01 02 Siemens Elema AB Servo Index 8 1 8 8 Index Alphabetic index 8 2 ...