Appendix
User’s Manual, DU3310103-MRI / rev.3 - 02.05.2019
11-3
GAS MIXING SYSTEM
It has the function to regulate the capacity and the concentration of gas mixture
(Air, O
2
, N
2
O) as well as to deliver it to the anaesthetic gas vaporizer.
It allows to select the mixture to be delivered (Air - O
2
, or N
2
O - O
2
) and the O
2
enrichment for delivered mixture in case of emergency.
The anaesthesia module includes a device which guarantees a minimum
concentration of 25% oxygen in all conditions (MIX-LIFE device).
The three pressure gauges on the front panel allow the continuous control of
medical gas feeding pressure coming from the gas pipelines system.
Oxygen rotameter
Scale: 0.1 - 15 L/min.
Resolution: 0.1 L/min up to 1 L/min and 1 L/min up to 15 L/min
Accuracy: ± 10% of read value or: ± 1% of end scale whichever is the worse
case.
Nitrous oxide rotameter
Scale : 0.2 - 12 L/min.
Resolution: 0.1 L/min up to 1 L/min and 0.5 L/min up to 12 L/min
Accuracy: ± 10% of read value or: ± 1% of end scale whichever is the worse
case.
Air rotameter
Scale: 0.1 - 15 L/min.
Resolution: 0.1 L/min up to 1 L/min and 1 L/min up to 15 L/min
Accuracy: ± 10% of read value or: ± 1% of end scale whichever is the worse
case.
Low flows oxygen
rotameter
Scale 0.1 - 1 L/min.
Resolution: 0.05 L/min
Accuracy: ± 10% of read value or: ± 1% of end scale whichever is the worse
case.
Low flow nitrous oxide
rotameter
Scale: 0.1 - 1 L/min.
Resolution: 0.05 L/min
Accuracy: ± 10% of read value or: ± 1% of end scale whichever is the worse
case.
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