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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
Anti Asphyxia Valve
(AAV)
open-to-atmosphere
pressure
Anti Asphyxia Valve
(AAV)
closed-to-atmosphere
pressure
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 222 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: 0.9 cm H
Inspiration at 50 L/min
Expiration at 50 L/min
≤1.6 cm H
O
2
≤1.8 cm H
O
2
Pressure
(cm H
3
4
8
10
12
18
20
24
28
30
32
36
40
O
2
O
2
0.6 cm H
O
2
1.0 cm H
O
2
Flow
O)
(L/min)
2
19
22
32
37
41
48
54
60
66
69
72
77
82
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