Dräger Medical Savina, Руководство пользователя

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Function Description Savina
2.1.5 O2 Diaphragm PCB The O2 Diaphragm PCB amplifies the signals from the O2 sensors and mea-
sures the temperature of the O2 sensors and of the respiratory gas in the
inspiration block. The temperature of the O2 sensors is required to compen-
sate for the temperature-sensitive O2 measurements. The calibration data
from the sensors are stored on the control PCB in an EEPROM. The refer-
ence voltage of the O2 sensors is generated from the voltage of the
rechargeable batteries, and so is also available when the unit is switched off.
The operating voltages of the O2 diaphragm PCB are +5 V and +15 V.
Figure 5 O2 amplifier block diagram
2.1.6 Fan The fan takes in ambient air through the cooler of the blower and cools the
blower. The air flow also removes excessive oxygen from the device.
The voltage supply to the fan is +24V. The rotation speed of the fan is con-
trolled by the Control PCB.
Figure 6 Fan control
2.2 Control panel
The operator control is the interface between the unit and the user. It is used
to enter and display the ventilation parameters.