User's Manual Part 3

6-20
6.3.4.4. Zero Calibration (CO2/Agent Multi-Gas Unit Only)
The zero calibration eliminates the effect of baseline drift during CO
2
measurement and
therefore maintains the accuracy of the CO
2
measurements. The Zero calibration also re-
calibrates the optional O2 measurements to 21% ambient room air. Zero calibration is carried
out automatically when necessary.
You can also start a manual zero calibration by following these steps:
1. Touch the CO
2
vital sign box
2. Select “Cal Zero”, note this key is non-functional and greyed out when Agents OFF
3. Touch Back button to close the menu
NOTE
• Disconnecting the patient airway may be required when performing a zero calibration.
Follow on screen prompt.
• Gas measurements will not be displayed during a zero calibration
6.3.5. EtCO
2
Alarm Limits
Low Limit
Range
Default Low
Default High
High Limit
Range
Adult EtCO
2
Off, 5-60
15 mmHg
50 mmHg
5-80, Off
Pediatric EtCO
2
Off, 5-60
20 mmHg
50 mmHg
5-80, Off
Neonatal EtCO
2
Off, 5-60
30 mmHg
45 mmHg
5-80, Off
Insp FiCO
2
Off, 3-20
Off
25 mmHg
5-25, Off
6.3.6. Respiration Alarm Limits
Low Limit
Default
Low
Default
High
High Limit
Adult Respiration
Off, 3-120
8
30
4-120, Off
Pediatric Respiration
Off, 3-120
8
30
4-120, Off
Neonatal Respiration
Off, 3-120
30
100
4-120, Off
6.3.7. CO
2
Messaging
Message
Trigger Condition
CO2 Inop
Hardware or software failure detected
CO2 Occlusion
Displayed when sampling line is occluded
CO2 Zeroing
Performing an automatic Zero (CO2/Agent Multi-Gas Unit only)
No Sample Line
CO
2
sampling line is disconnected (CO2/Agent Multi-Gas Unit only)
CO2 Cal Error
Calibration error is detected
CO2 Over Scale
CO2 waveform beyond visible scale
Gas System Inop
Gas system malfunction