ResMed S9 VPAP Tx manual Flow maximum at set pressures, Displayed values, Min, Value Accuracy

Flow (maximum) at set pressures

The following are measured at the end of the specified air tubing:

Pressure	S9 VPAP Tx and	S9 VPAP Tx, H5i	S9 VPAP Tx and	S9 VPAP Tx, H5i
cm H2O	standard air	and standard air	SlimLine,	and ClimateLine,
	tubing,	tubing,	L/min	L/min
	L/min	L/min
4	200	170	195	170
8	200	170	190	170
12	200	170	184	170
16	200	170	175	170
20	190	170	168	161
25	180	161	144	125

Displayed values

Value

Range

Display resolution

Pressure sensor at air outlet

Mask pressure	3–30 cm H2O	0.1 cm H2O
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	Accuracy1
Pressure measurement1
Mask pressure	±0.5 cm H2O (+ 4% of measured value)
Flow measurements1
Leak2	±12 L/min or 20% of reading, whichever is greater, at 0 to 60 L/min
Tidal volume2	±20%
Respiratory rate2	±1.0 BPM
Minute ventilation2	±20%

1Results are expressed at ATPD (Ambient Temperature and Pressure, Dry)

2Accuracy may be reduced by the presence of leaks, supplemental oxygen, tidal volumes <100 mL or minute ventilation <3 L/min.

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