Braun Perfusor compact plus - Page 42

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Start-up and trumpet curves
Note: The system accuracy is normally
±2% of the volume, measured using the
trumpet curve test method according
to IEC60601-2-24 at a rate of 1ml/h
(at20°C ± 2°C) and using the recom-
mended syringes.
Start-up curves
Measurement interval
Δt = 0.5min
Measurement duration T = 120 min
Flow Q
i
(ml/h)
Trumpet curves
(Measured values for second hour
in each case)
Measurement interval
Δt = 0.5min
Observation interval
p x Δt [min]
This is particularly important if highly
concentrated or life-sustaining drugs with
short half-lives are to be infused at low
infusion rates.
When infusing at low rates and with large
syringes, there can be deviations from
the pump‘s technical data, which can
lead to delivery deviations, delayed start-
up behaviour and longer alarm times in
the event of system occlusions (pressure
alarms).
Recommendation
Syringe size [ml]
50/60 30 20
Recommended
minimum rate [ml/h]
1 1 0.5
Recommendation
Syringe size [ml] 10 5 3
Recommended
minimum rate [ml/h]
0.1 0.05 0.01
These graphs show the accuracy and
uniformity of ow over time. Take into
account:
Q
The delivery behaviour and the
delivery accuracy are fundamentally
aected by the type of syringe used
(disposable item).
Q
Deviations from the pump technical
data cannot be ruled out for competi-
tors’ syringes.