75
Instruction
Image
Turn the filter to the left side to remove.
Introduce a new filter and turn to the right
side to close.
9.7 O
2
Concentration Cell
This ventilator is equipped with O
2
monitoring means for measurements of inspiratory oxygen
concentration according to ISO 80601-2-55. This equipment has two ways of measuring the concentration of
oxygen:
Galvanic Cell - generates an electric signal proportional to the concentration of oxygen in the gas
mixture administered to the patient and the intensity of this electrical signal is due to the chemical reaction.
This measuring medium is consumable, and the life of the cell as specified by the original manufacturer is
10,000 hours at 100% O
2
, i.e. greater than one year of continuous use. However, we recommend switching
during preventive maintenance on a 24-month or 10,000-hour schedule (whichever comes first).
Paramagnetic Cell - generates an electric signal proportional to the concentration of oxygen in the gas
mixture administered to the patient and the intensity of this electrical signal is due to the torque created in the
magnetic arrangement of the cell. This sensor uses the paramagnetic susceptibility of oxygen that
distinguishes it from other gases. This measuring medium is not consumable.
•
The galvanic cell for measuring the oxygen concentration should be replaced as
indicated in chapter 10.21.
•
Replacement should be performed by trained and qualified personnel.
•
The galvanic O
2
cell undergoes degradation of less than 1% per month in the