Mindray A9 Service Manual

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6.3.5.3 Calibration Procedure
Automatic Calibration
Perform the following steps to calibrate the pressure sensor and PEEP proportional valve.
1. Ensure that the anesthesia machine is in standby mode.
2. Select Setup > Service > Calibrate > Pressure Sensor and select Automatic Calibrate to
access the screen shown below.
3. Use a communication cable to connect the calibration device and the anesthesia machine
according to the instructions on the screen. Connect the pressure sampling line to the
calibration device according to steps 2 and 4. Details are shown below:
VT Plus setup:
When VT Plus is used as the calibration device, perform the following operations on it (note:
verify the correctness of the settings before each calibration):
1) Zero Mode: Manual
 Select SETUP > Settings > ENTER and set Zero Mode to Manual.
2) Serial Mode: OTIS Ctrl
 Select SETUP > System > ENTER and select Serial Mode: OTIS Ctrl.
 Note: Set Serial Mode before calibration. Exit the Serial Mode setup screen before you
access the (flow or pressure) measurement screen. To exit the Serial Mode setup screen,
Select SETUP > System > ENTER and select Serial Mode: NONE.
VT 650/900 setup :
When VT 650/900 is used as the calibration device, perform the following operations on it (note:
verify the correctness of the settings before each calibration):
 Select Menu > Unit > Low Pressure, select cmH2O, and select OK.

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