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2.3.5.8 O2 Cell Calibration Valve Assembly
During O2 cell calibration, the O2 cell calibration valve is turned on to supply air to the O2 cell
for calibration. In the non-calibration state, the O2 cell calibration valve is turned off.
Figure 34 Structural diagram of the O2 cell calibration valve assembly
2.3.5.9 Drive Gas Assembly
The drive gas assembly drives the patient's breathing process. The input is O2 from the gas
supply. The output includes the drive gas to the breathing system, PEEP control gas to the
expiratory valve, and PEEP exhausted gas to the gas reservoir. The drive gas assembly is used to
implement various ventilation modes to prevent excessive airway pressure from harming the
patient. The pneumatic diagram of the drive gas assembly is shown below.
Figure 35 Pneumatic diagram of the drive gas assembly
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