Sorc (Sensitive Oxygen Ratio Controller) - Dräger Medical Fabius Tiro Technical & Service Manual

Fabius Tiro
Figure 11 Gas Box Functional Diagram (Part 2 of 2)
6 SORC (Sensitive
Oxygen Ratio Con-
troller)
20
Dräger Medical AG & Co. KGaA
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The SORC is a control element that functions like an N2O shut-off device and
ensures a vital O2 concentration in the fresh gas. In the event of an O2 short-
age, the SORC limits the N2O flow such that the O2 concentration in the
fresh gas does not decrease below 23 vol.%.
If the O2 flow control valve is closed or if the O2 flow is lower than or equal to
200 mL/min, the SORC interrupts the N2O flow.
N2O can be added when the O2 flow is approx. 300 mL/min. In this case, the
SORC also prevents O2 concentrations below 23 vol.%.
The SORC bypass allows O2 to bypass the restrictor in the SORC when O2
flows above 10 L/min. are needed.
6020.002
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Function Description
Revision B Released