User Manual

13
Resistance
Drop in Pressure measured
at 50 L/min: ≤ 0.5 cmH
2
O
at 100 L/min: ≤ 1.5 cmH
2
O
Inspiratory and expiratory
resistance with the Non-
Rebreathing Valve open-to-
atmosphere pressure
Inspiratory at 50 L/min: ≤ 2 cmH
2
O
Expiratory at 50 L/min: ≤ 2 cmH
2
O
The Non-Rebreathing Valve
open-to-atmosphere
pressure
≤ 2 cmH
2
O
The Non-Rebreathing Valve
closed-to-atmosphere
pressure
≤ 2 cmH
2
O
Sound
DECLARED DUAL-NUMBER NOISE
EMISSION VALUES in accordance with ISO
4871. The A-weighted sound power level of
the mask is less than 38 dBA, with uncertainty
3 dBA. The A-weighted sound pressure level
of the mask at a distance of 1 m is less than
30 dBA, with uncertainty 3 dBA.
Environmental Conditions Operating temperature: +5°C to+ 40°C (41°F to
104°F)
Operating humidity: 10%~90%
relative humidity non-condensing
Storage and transport: -20°C to +60°C (-4°F to
140°F)
Storage and transport humidity:
10%~90% relative humidity non-
condensing
Note: The mask system does not contain natural rubber latex, PVC or DEHP
materials.