CO
2
Monitoring
15-4
15.5 CO
2
Measurement
Check the airway adapter before use. Replace it if the airway adapter suffers from any exterior damage
or breakage.
Turn it off when the CO
2
module is in stand-by mode, or it will remain in a working state and its service
life will be shortened.
The Water Filter Assembly of the Respironics sidestream CO
2
sensor will last up to 12 hours when
used without the Dehumidification Tubing in a non-humidified environment.
The Water Filter Assembly of the Respironics sidestream CO
2
sensor will last up to 120 hours when
used with the Dehumidification Tubing under the conditions of ISO 80601-2-55 Cl. 201.7.9.2.9.101b.
The life of the Water Filter assembly of the Respironics sidestream CO
2
sensor will be significantly
reduced if used in a humidified circuit without dehumidification tubing.
15.5.1 Preparations for Mainstream CO
2
module Connection
1) Connect the mainstream sensor to the CO
2
interface of the monitor.
2) Wait for 10s (Masimo CO
2
module) or 2min (Respironics and Comen CO
2
module) until the module reaches its
working temperature and a stable thermal state.
3) Place the airway adapter on the mainstream CO
2
module.
(1) Sensor (2) Airway adapter
4) Zero the sensor; please refer to "
Section 15.6 Zeroing the CO
2
Sensor
" for more information.
5) Install the airway adapter onto one end of the respiration circuit, such as between the elbow tube and the Y-
shaped tube (see figure below).