Technical Specifications - ResMed AirFit N20 User Manual

Technical specifications

Pressure-flow
curve
Dead space
information
Therapy
pressure
Resistance
Environmental
conditions
Sound
Gross
dimensions
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 103.3 mL.
4 to 30 cm H O
2
Drop in pressure measured (nominal)
at 50 L/min: 0.3 cm H
at 100 L/min: 1.3 cm H
Operating temperature: 41°F to +104°F (5°C to 40°C)
Operating humidity: 15% to 95% non-condensing
Storage and transport temperature: -4°F to +140°F (-20°C to +60°C)
Storage and transport humidity: up to 95% non-condensing
DECLARED DUAL-NUMBER NOISE EMISSION VALUES in accordance
with ISO 4871. The A-weighted sound power level of the mask is
24 dBA, with uncertainty of 3 dBA. The A-weighted sound pressure
level of the mask at a distance of 1 m is 16 dBA, with uncertainty of
3 dBA.
13.3" (H) x 11.4" (W) x 6.4" (D)
(339 mm (H) x 291 mm (W) x 162 mm (D))
Mask fully assembled with the short tube assembly and swivel,
excluding the headgear
O
2
O
2
Pressure Flow
(cm H O) (L/min)
2
4 20
7 27
11 35
14 40
17 44
20 49
24 54
27 58
30 61