25-7
5. Open the relief valve to vent standard CO
2
and make sure that there is an excess gas
flow through the T-shape connector to air.
6. Check the realtime CO
2
value is within 6.0±0.3% in the [Calibrate CO2] menu.
25.6.3 Calibrating CO
2
For the CO
2
module, a calibration is needed every year or when the measured values have a
great deviation. For maintream CO
2
module, no calibration is needed. Calibration for the CO
2
module can be performed only when the module enters the full accuracy mode.
WARNING
z Connect an exhaust tube to the gas outlet connector of the monitor to remove the
calibration gases to a scavenging system.
Tools required:
 A steel gas cylinder with 6±0.05% CO
2
and balance gas N
2
 T-shape connector
 Tubing
Follow this procedure to perform a calibration:
1. Make sure that the CO
2
module has been warmed up or started up.
2. Check the airway for leakage and perform a leakage test as well to make sure the airway
has no leakage.
3. Select [Main Menu] [Maintenance >>] [User Maintenance >>] enter the
required passwordė[Module Maintenance >>] [Maintain CO
2
>>] [Calibrate
CO
2
>>].
4. In the [Calibrate CO
2
] menu, select [Zero].
5. After the zero calibration is finished successfully, connect the equipment as follows:
To Next Page
Loading...
Need help?
General
