3-11
5. Adjust the relief valve and make sure the flowmeter reading is stable and within 10 and
50 L/min.
6. Check that the concentration of each composition meets the specification stated in the
Operator's Manual.
Calibration
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%,
CO
2
≥ 1.5%, N
2
O ≥ 40%, O
2
≥ 40%, of which AA represents an anesthetic agent (Des,
Sev, Enf, Iso, or Hal). a/c ≤ 0.01 (a is the gas absolute concentration accuracy; c is the
gas concentration)
T-shape connector
Appropriate tubing
Follow this procedure to perform the pressure calibration:
1. Select [Main Menu]→ [Maintenance >>]→ [User Maintenance >>]→ enter the
required password→ [Calibrate AG >>] to access the [Calibrate AG] menu.
2. Check the airway and make sure that there are no occlusions or leaks.
Vent the sampling tubing to the air and check if the [Current FlowRate] and [Set
FlowRate] are approximately the same. If the deviation is great, it indicates that
there is an occlusion in the tubing. Check the tubing for an occlusion.
Check the airway and make sure that the airway has no leakage.
3. Connect the test system as follows:
Monitor
Cylinder
Flowmeter
Relief valve
T-shape connector
Sampling line
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