12-6
NOTE
Handle and dispose of the O
2
sensor according to your biohazard policies. Do not
incinerate.
Oxygen concentration monitoring does not provide automatic atmospheric
pressure compensation. Do oxygen concentration calibration again when
atmospheric pressure has changed.
Increasing to periodical pressure of 10 kPa (100 cmH
2
O) has no effect upon oxygen
concentration monitoring accuracy.
O
2
cell measures the partial pressure of oxygen. Increase or decrease of pressure
(absolute pressure) affects the partial pressure of oxygen. Increase of pressure
(absolute pressure) by 10 % causes oxygen concentration to increase by 10 %.
Decrease of pressure (absolute pressure) by 10 % causes oxygen concentration to
decrease by 10 %. Do oxygen concentration calibration when atmospheric pressure
has changed.
12.6 CO
2
Calibration
12.6.1 Sidestream CO
2
Module
NOTE
Ensure that the system is in Standby. If not, push the [Standby] key to enter
standby screen.
Prepare the following before doing the calibration:
Gas cylinder: cylinders filled with 3 % to 7 % CO
2
T-shape connector
Sampling line
Follow these steps to perform CO
2
calibration:
1. Check the airway and ensure that there are no occlusions or leaks. Ensure that the CO
2
module is already warmed up or started.
2. Select the [Setup] key→[Maintain]→[User]→enter the required password→[CO
2
In
Maintenance]→[Zero].
3. After zeroing, connect the gas cylinder to the sampling line via a T-shape connector as
shown below. Check the airway and ensure that there are no leaks.
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