
16-10
16.5 Calibrating AG
Calibrate the AG module every year or when the measured value has a great deviation.
Tools required:
Gas bottle, with a certain standard gas or mixture gas. 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.
T-shape connector
Tubing
Reservoir bag
Follow this procedure to perform a calibration:
1. Select MAINTAIN>> in SYSTEM MENU, enter USER KEY, then select CONFIRM
button. Then selecting GAS CALIBRATE >> in USER MAINTAIN menu opens the GAS
CALIBRATE menu.
2. Select VERIFY ACCURACY to check the airway and make sure that there are no
occlusions or leaks.
Vent the tubing to the air and check if the CUR RATE and SET RATE 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.
The CUR RATE shall fall rapidly and the system prompt that the tubing is blocked.
Otherwise, it indicates that there are leakages in the tubing. Check the tubing for
leakages.
3. Connect the gas bottle, reservoir bag and the tubing using a T-shape connector as shown in
the figure below. Check the airway and make sure there are no leaks.
4. Open the gas valve and vent a certain standard gas or mixture gas into the tubing.
5. In the CALIBRATE menu, the concentration and flowrate of each measured gas are
displayed
If the difference between the measured gas concentration and the actual one is very
small, a calibration is not needed.
If the difference is great, you should perform a calibration. Select START CAL>> to
enter the calibrate menu.
6. Enter the vented gas concentration. If you use only one gas for calibration, set other gases’
concentration to 0.
7. Select CALIBRATE to start calibration.
AG module
Reservoir bag
Gas bottle
Gas valve
Tubing
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