Mindray A9 Service Manual

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2.2.6 Auxiliary O2/Air System
2.2.6.1 Auxiliary Flowmeter Monitoring Board
The auxiliary flowmeter monitoring board is the core control part of the auxiliary flowmeter of
the anesthesia machine. It is mainly used at a low flow of 0–15 L/min and can work
independently. The flow sensor is welded on the board. The auxiliary flowmeter monitoring
board controls the O2/air flow through the proportional valve, and monitors and feeds back the
O2/air flow through the flow sensor. In addition, the auxiliary flowmeter monitoring board also
drives the three-way valve. This board is configured with auxiliary O2/air software.
Installation position of the auxiliary flowmeter monitoring board
Auxiliary flowmeter monitoring board (top view)
Auxiliary flowmeter monitoring board

Mindray A9 Specifications

General

Type	Anesthesia Workstation
Integrated Gas Analysis	Yes
Backup Battery	Yes
Operating Temperature	10°C to 40°C
Storage Temperature	-20°C to 55°C
Battery Type	Lithium-ion
Ventilation Modes	Volume Control, Pressure Control, SIMV, Manual Ventilation
Display	Touchscreen
Patient Monitoring	ECG, SpO2, NIBP, EtCO2, Temperature
Connectivity	Ethernet, USB
Portability	Mobile (with wheels)
Battery Life	Minimum 90 minutes (typical)
Altitude	Up to 3000 meters
Power Supply	100-240 VAC, 50/60 Hz
Charging Time	Approximately 4 hours
Storage	Internal storage for patient data and system logs
Supported Languages	Multiple languages
Certifications	CE, FDA