ResMed AirFit N20 User Manual page 11

Dead space: Physical dead space is the empty volume of the mask to the end of the
swivel. Using the large cushion it is
Resistance: Drop in pressure measured (nominal)
at 50 L/min
at 100 L/min
Sound: DECLARED DUAL-NUMBER NOISE EMISSION VALUES in accordance with
ISO 4871. The A-weighted sound power level and the A-weighted sound pressure level of
the mask at a distance of 1 m, with uncertainty of 3 dBA, are shown
Power level
Pressure level
Gross dimensions: Mask fully assembled with the short tube assembly and swivel,
excluding the headgear (H x W x D)
Environmental Conditions
Operating temperature: 41°F to 104°F (5°C to 40°C)
Operating humidity: 15% to 95% RH non-condensing
Storage and transport temperature: -4°F to +140°F (-20°C to +60°C)
Storage and transport humidity: up to 95% RH non-condensing
International Commission on Non-Ionizing Radiation Protection (ICNIRP)
Magnets used in this mask are within ICNIRP guidelines for general public use.
Service Life
The service life of the mask system is dependent on the intensity of usage, maintenance,
and environmental conditions to which the mask is used or stored. As this mask system
and its components are modular in nature, it is recommended that the user maintain and
inspect it on a regular basis, and replace the mask system or any components if deemed
necessary or according to the 'visual criteria for product inspection' in the 'Cleaning your
mask at home' section of this guide.
Mask Setting options
For AirSense, AirCurve or S9: Select "Pillows'.
For other devices: Select 'SWIFT' (if available), otherwise select 'MIRAGE' as
the mask option.
Compatible devices: For a full list of compatible devices for this mask, see the
Mask/Device Compatibility List at ResMed.com/downloads/masks. If you do not have
internet access, please contact your ResMed representative.
10
AirFit N20
103 mL (Large)
0.3 cm H O
2
1.3 cm H O
2
24 dBA
15 dBA
13.3" x 11.4" x 6.4"
(339 mm x 291 mm x
162 mm)
AirTouch N20
103 mL (Large)
0.4 cm H O
2
1.4 cm H O
2
24 dBA
15 dBA
13.3" x 11.4" x 6.7"
(339 mm x 291 mm x
170 mm)