Dräger Savina 300, Техническая документация инструкция, Страница: 23 / 166

Savina 300
No
.1
309
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00
000
12
27
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bl
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ati
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23
Function descriptions
Pneumatic assembly
O2 mixture with O2 high
pressure
In order to be able to ventilate with an increased O2 concentration, the unit
must be supplied with 2.7 to 6.0 bar O2. The oxygen is filtered by the filter F2.
With the aid of the digital valve block consisting of 8 digital solenoid valves,
oxygen is metered into the volume (mixing chamber). The amount of metered
oxygen depends on the pre-set O2 concentration and on the inspiratory flow
rate measured by the flow sensor S1. The oxygen is metered in a closed con-
trol loop. In the process, the inspiratory O2 concentration is measured by the
O2 sensor S 3.1.
Fig. 11 Detail view of functional diagram; O2 mixture with O2 high pres-
sure