50
Displayed values
Value
Range
Display resolution
Pressure sensor at air outlet:
Mask pressure
3–30 cm H
2
O
0.1 cm H
2
O
Flow derived values:
Leak
0–120 L/min
1 L/min
Tidal volume
0–4000 mL
1 mL
Respiratory rate
0–50 BPM
1 BPM
Minute ventilation
0–30 L/min
0.1 L/min
Ti
0.1–4.0 sec
0.1 sec
I:E ratio
1:100–2:1
0.1
Value
Accuracy
1
Pressure measurement
1
:
Mask pressure
2
±[0.5 cm H
2
O (0.5 hPa) + 4% of measured value]
Flow and flow derived values
1
:
Flow
±6 L/min or 10% of reading, whichever is greater, at 0 to 150 L/min positive flow
Leak
2
±12 L/min or 20% of reading, whichever is greater, 0 to 60 L/min
Tidal volume
2,3
±20%
Respiratory rate
2,3
±1.0 BPM
Minute ventilation
2,3
±20%
1
Results are expressed as STPD (Standard Temperature and Pressure, Dry). 101.3kPa at an operating temperature of 68°F (20°C), dry.
2
Accuracy may be reduced by the presence of leaks, supplemental oxygen, tidal volumes <100 mL or minute ventilation <3 L/min.
3
Measurement accuracy verified as per ISO 10651-6:2004 for Home Care Ventilatory Support Devices (Figure 101 and Table 101) using
nominal ResMed mask vent flows.
Measurement system uncertainties
In accordance with ISO 80601-2-70:2015 the measurement uncertainty of the manufacturer's test equipment is:
For measures of flow
± 1.5 L/min or ± 2.7% of reading (whichever is greater)
For measures of volume (< 100 mL)
± 5 mL or 6% of reading (whichever is greater)
For measures of volume (
≥
100 mL)
± 20 mL or 3% of reading (whichever is greater)
For measures of pressure
± 0.15 cm H
2
O (0.15 hPa)
For measures of time
± 10 ms
Pressure accuracy - CPAP
Maximum static pressure variation at 10 cm H
2
O (10 hPa) according to ISO 80601-2-70:2015
Standard air tubing
SlimLine air tubing
Without humidification
± 0.5 cm H
2
O (± 0.5 hPa)
± 0.5 cm H
2
O (± 0.5 hPa)
With humidification
± 0.5 cm H
2
O (± 0.5 hPa)
± 0.5 cm H
2
O (± 0.5 hPa)
Maximum dynamic pressure variation according to ISO 80601-2-70:2015
Device without humidification and Standard air tubing / Device with humidification and Standard air tubing
Pressure [cm H
2
O (hPa)]
10 BPM
15 BPM
20 BPM
4
0.5 / 0.5
0.5 / 0.5
0.8 / 0.8
8
0.5 / 0.5
0.5 / 0.5
0.8 / 0.8
12
0.5 / 0.5
0.5 / 0.5
0.8 / 0.8
16
0.5 / 0.5
0.5 / 0.5
0.8 / 0.8
20
0.5 / 0.5
0.5 / 0.5
0.8 / 0.8
