Northern Meditec Crius V6, Operator'S Manual

Page: 143 / 182

143 / 182
personnel or us.

Handle and dispose of the O2 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 cmH2O) has no effect upon oxygen
concentration monitoring accuracy.

O2 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 CO2 Calibration
12.6.1 Sidestream CO2 Module
NOTE

Ensure that the system is in Standby. If not, push the [Standby] key to enter standby
screen.
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 [ Menu ] key
→
[ System setup ]
→
[CO
2
Module]
→
[Start Zero Cal.].
3. After a successful calibration, the screen shows [ CO
2
% Calibration Completed! ].
Otherwise, the message [ Calibration Failure! Try again! ] is displayed. In this case,
you need to do the calibration again.
12.6.2 Mainstream CO2 Module
For a mainstream CO
2
module, manual calibration is not required. The system sends altitude
to the mainstream CO
2
module for calibration compensation.
12.7 Touch Screen Calibration
NOTE

Ensure that the system is in Standby. If not, push the [Standby] key to enter standby
screen.