Mindray BeneVision N19, Service Manual

Page: 41 / 105

BeneVision N22/BeneVision N19 Patient Monitor Service Manual 3-15
3.4.7 C.O. Test
Tools required:
 Medsim300B patient simulator or other equivalent simulator
 C.O. adapter box (for 300B)
1. Connect the patient simulator to the C.O. module using a C.O. main cable.
2. Set the blood temperature (BT) to 37ºC on the patient simulator and check the temperature value is 37±0.1ºC.
3. Switch off Auto TI and adjust TI (IT) to 24ºC. Select C.O. Measure to enter the C.O. measurement window and set
Comp. Const. to 0.595.
4. Set the injectate temperature to 24ºC and the C.O. to 5 L/min on the C.O. simulator. Select Start in the C.O.
measurement window to start C.O. measurements, and press the run key on the simulator after 3-10 seconds.
6. Verify that the C.O. value is 5±0.25 L/min.
3.4.8 Mainstream CO
2
Tests
NOTE

Make sure that the barometric pressure set in Main Menu
→
Maintenance
→
enter the
required password
→
Other accords with the local barometric pressure before performing
mainstream CO
2
tests.
Tools required:
 A gas cylinder with 5±0.03% CO2, 21.0% O2 and balance gas N2 (P/N 0075-00-0033-01), or a steel gas cylinder
with: 

CO2 concentration 3% -
7% 

a/c ≤ 0.01 (w here a = absolute gas concentration accuracy, c = gas concentration)


balance gas N2
 T-shape connector
 Tubing
 Flowmeter
1. Plug the module into the module rack and connect the sensor.
2. Wait until CO
2
warmup is finished. Select the CO
2
waveform or parameter to enter the CO2 Setup menu. Then,
select Start Zero Cal. to start a zero calibration. If the zero calibration fails, the prompt message CO2 Zero Failed is
displayed. Otherwise, the baseline of waveform recovers to zero.
3. Set Apnea Time to 10s in the CO2 Setup menu.
4. Blow to the CO
2
sensor to generate a CO
2
waveform and then place the sensor in the air. Check if the alarm
message *** Apnea is displayed on the screen.
5. Connect the test system as follows: