English to Greek Medical Medical: Instruments Ventilator

"The setting of the FiO2 results in the obligation to monitor this parameter, by connecting a FiO2 cell on the front panel of the unit (see § Installation and Assembly – Oxygen).
When oxygen enrichment has been set and additional monitoring is set up by an external FiO2 cell, two alarm thresholds are automatically calculated by the apparatus to within ± 10 of the FiO2 enrichment setting (see § Alarms and Troubleshooting)."

Είναι ένα "στοιχείο" ή μια "μονάδα";