Supplement for Infinity Delta Series Software
50
Supplement – Infinity
®
Delta Series Software VF10.1
Zeroing
Perform the zeroing process once a day or when prompted to zero.
The zeroing operation is performed in ambient air with a clean Dräger mainstream CO
2
sensor that is
removed from the cuvette.
1
Remove the Dräger mainstream CO
2
sensor from the cuvette.
2
Select
CO2 Zero
under the
etCO2
parameter menu. The monitor performs the zeroing operation and
displays a message that the CO
2
zeroing is in progress. Waveforms flatline and parameter box values
disappear from the screen during this cycle.
3
Fit the Dräger mainstream CO
2
sensor onto the cuvette.
If zero was successful, the monitor displays the message
CO2 Zero Accepted
after approximately
30 seconds. If zero was unsuccessful, the monitor displays the message
CO2 Zero Failed
. Repeat the
zeroing operation. If the zero remains unsuccessful, check whether the sensor is contaminated, clean it if
necessary, and re-zero. If the zero remains unsuccessful, the sensor may be defective and require
replacement.
A
Expiratory or alveolar plateau (level of CO
2
in lungs ceases to increase
significantly)
B
End-tidal concentration point (end of expiration phase, where CO
2
is measured)
C
Onset of inspiration phase
D
Onset of expiratory phase
E
Baseline during inspiration
A
B
C
D
E
