118 Accessories and options
fabian HFO | SW 5.1.x
Ref: 113003.EN / Date 2020-02-10
Several conditions are required to start the zero calibration procedure:
• These requirements stem from changes in the airway adapter that could indicate that the sensor
is not in optimal measuring condition. When this occurs, the airway adapter should be checked to
ensure optical occlusions such as mucus have NOT obscured the adapter window.
• If occlusions are found, the airway adapter must be cleaned or replaced.
Figure 23 - Respironics CO
2
Sensor Zeroing
12.2.4.4 Respironics sensors Start-up
The Capnostat 5 Mainstream CO
2
sensor requires approximately five seconds from power up for
internal initialization.
• After the CO
2
sensor has completed the start-up, the sensor is ready to respond to all commands
from the serial interface.
• For optimal CO2 accuracy, the host initializes several settings on start up or whenever the
Capnostat 5 Mainstream CO2 sensor is initially connected to the host.
• The data rate for the continuous waveform modes is 100 Hz, therefore the host can expect a new
waveform packet approximately every 10 milliseconds
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