4-9
4.2.4 AG Tests
Leakage Test
1. Plug the AG module into the module rack.
2. Wait until the AG module warmup is finished and then completely block the gas inlet of the AG module (you may
use a pneumatic plug or your finger to manually occlude the port). An alarm message AG Airway Occluded will
appear on the screen.
3. Block the gas inlet for another 60 seconds. Select Main Menu→Maintenance→enter the required password→
Module→AG→Calibration. Check that the flow rate is less than 10 ml/min. If the alarm message continues, it
indicates that the module does not leak.
If the alarm message disappears, or the flow rate is greater than or equal to 10 ml/min, it indicates that the module leaks.
Accuracy Test
Tools required:
Gas cylinder with a certain standard gas (such as 6±0.05% CO
2
, Bal N
2
) or standard gas mixture. Gas concentration
should meet the following requirements: AA [1.5%,7.0%], set step length: 0.1, CO
2
[1.5%,7.0%], set step length: 0.1,
N
2
O [40%,100%], set step length: 5, O
2
[40%,100%], set step length: 5, of which AA represents an anesthetic agent.
Precision requirement: a/c ≤ 0.01 (a is the gas absolute concentration accuracy; c is the gas concentration)
T-shape connector
Tubing
Flowmeter
1. Plug the AG module into the module rack.
2. Wait at least 10 min and then perform a leakage test to make sure that the airway has no leakage.
3. Connect the test system as follows:
4. Open the relief valve, and adjust it until the flowmeter has a stable reading between 10 ml/min and 50 ml/min.
5. Verify that the concentration of each composition meets the specification stated in the Operator's Manual.
Monitor
T-shape connector
Tubing
Relief valve
Flowmeter
Gas cylinder
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