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Displayed values
Value
Pressure sensor at air outlet
Mask pressure
Flow derived values
Leak
Tidal volume
Respiratory rate
Minute ventilation
Value
Pressure measurement
Mask pressure
Flow measurements
b
Leak
b.c
Tidal volume
b, c
Respiratory rate
b, c
Minute ventilation
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 ISO 10651-6:2004 for Home Care Ventilatory Support
Devices (Figure 101 and Table 101).
12
Range
4–20 cm H
H
O (ASV, ASVAuto)
2
0–200 L/min
0–4000 mL
0–50 BPM
0–30 L/min
Accuracy
a
±0.5 cm H
a
±12 L/min or 20% of reading, whichever is greater, at 0 to 60
L/min
±20%
±1 BPM
±20%
O (CPAP); 4–25 cm
2
a
O (+4% of measured value)
2
Display resolution
0.1 cm H
O
2
1 L/min
1 mL
1 BPM
0.1 L/min
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