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Appendix
5.2.5
Patient Parameter Specifications
Pulse Rate from NIBP
Accuracy:
± 1 bpm
Resolution:
1 bpm
Range:
ADULT MODE
PEDIATRIC MODE
40 to 240 bpm
40 to 240 bpm
5.2.6
NIBP Sub-System Functional Requirements
5.2.6.1
Maximum Cuff Pressure
The software-controlled over-pressure monitor vents to atmosphere at the following pressures:
ADULT MODE
PEDIATRIC MODE
297 ±3 mmHg
243 ±3 mmHg
Under single-fault conditions, the hardware controlled over pressure mechanism vents the cuff
to atmosphere so that the pressure in the cuff does not exceed the following:
5.2.6.2
ADULT MODE
PEDIATRIC MODE
300 (+10%) mmHg
300 (+10%) mmHg
Cuff Inflation
The inflation source is capable of supplying sufficient air to bring a volume of 500 cc to a
pressure of 300 mmHg in no more than 20 seconds.
If the cuff is not inflated 5 mmHg within 18 seconds, the cuff is vented and the measurement
is stopped.
5.2.6.3
Maximum Leakage
The maximum allowed pressure drop with the bleed valves closed is 6 mmHg in 60 seconds
as measured with a 500 cc volume at differential pressures of 250 mmHg, 150 mmHg and
50 mmHg.
5.2.6.4
Vent Rate
A volume of 500 cc, when vented, is reduced from a pressure of 260 mmHg to a pressure of
15 mmHg in a maximum of 10 seconds.
5.2.6.5
Initial Conditions
An NIBP Zero is performed automatically before the NIBP can be initiated.
An NIBP measurement will not initiate until the unit has been powered on for 5 seconds, in
order to allow time for the Zero.
Duo™ Operating Instructions
0070-10-0603-01
5-5