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Displayed values
Value Range Display resolution
Pressure sensor at air outlet
Mask pressure 4-20 cm H
2
O (CPAP); 2-25 cm
H
2
O (S, ST, T, PAC, iVAPS)
0.1 cm H
2
O
Flow derived values
Leak 0
–
200 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 1:50
–
2:1 0.1
Value Accuracy
a
Pressure measurement
a
Mask pressure
±0.5 cm H
2
O (+4% of measured value)
Flow measurements
a
Leak
b
±12 L/min or 20% of reading, whichever is greater, at 0 to
60 L/min
Tidal volume
b.c
±20%
Respiratory rate
b,c
±1 BPM
Minute ventilation
b, c
±20%
a. Results are expressed at ATPD (Ambient Temperature and Pressure, Dry).
b. Accuracy may be reduced by the presence of leaks, supplemental oxygen, tidal volumes <100 mL
or minute ventilation <3 L/min.
c. Measurement accuracy verified as per EN ISO 10651-6:2009 for Home Care Ventilatory Support
Devices (Figure 101 and Table 101) using nominal ResMed mask vent flows.