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Chapter X Mainstream CO2 Module
10.1 Hardware Interface
10.1.1 Mainstream CO2 Module
Fig. 10.1.1 Mainstream CO2 Probe
10.1.2 Points for Attention
Zero Operation
It is recommended that users ensure each module goes down to zero before use to
ensure the best measurement accuracy. During the zero calibration operation,
ensure that the gas sampled by the module is air. If the module is in use and zero
calibration must be performed, the module must alarm "apnea" first and the user
must disconnect the module from the patient, ensuring that none of the gas sampled
is from the patient. If the probe needs to return to zero, just unplug the adaptor and
re-insert it. The probe will automatically return to zero without having to enter the
monitor set-up software (see section 3.5.4).
Check Adapter
When "check adapter" warning appears,
check to see if the adapter is connected
and that the optical analysis window is
clean.
Clean probe with alcohol or install a new
probe if needed.
Fig 10.1.2. Airway Adapter
10.1.2.3
The monitor may report "compensation not set" after power failure or device reset. If
this warning occurs, enter the Set ETCO2 menu to adjust the compensation settings.
10.1.2.4
On initial power up and after connecting a new probe to the monitor, a solid red light
will illuminate on the module itself. This means the module is in a pre-heated state.
When the red light goes out, the adapter is preheated. When the adapter is pre-
heated and in a normal measurement state, a green light will illuminate during
exhalation and will turn off during inhalation. If the red light is slowly blinking, that
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