Technical Specifications - ResMed AirFit F20 User Manual

Technical specifications

Pressure-flow curve
Dead space
information
Therapy pressure
Resistance with
Anti Asphyxia Valve
(AAV) closed to
atmosphere
Inspiratory and
expiratory
resistance with Anti
Asphyxia Valve
(AAV) open to
atmosphere
8
The mask contains passive venting to protect
against rebreathing. As a result of manufacturing
variations, the vent flow rate may vary.
Physical dead space is the empty volume of the mask to the end
of the swivel. Using the large cushions it is 240 mL.
3 to 40 cm H O
2
Drop in pressure measured (nominal)
at 50 L/min: 0.2 cm H
at 100 L/min: 0.6 cm H
Inspiration at 50 L/min:
Expiration at 50 L/min:
O
2
O
2
0.6 cm H
0.7 cm H
Pressure
(cm H O)
2
3
8
10
12
16
20
24
28
30
32
36
40
O
2
O
2
Flow
(L/min)
19
32
37
41
48
54
60
66
69
72
77
82