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START UP GRAPHS AND TRUMPET CURVES
Chapter 8
The graphs show the accuracy/uniformity of flow in relation to time. They allow
for the following:
The delivery behaviour or delivery precision is essentially influenced by the type
of the disposable used. Deviations from the technical data of the pump cannot be
guaranteed as the manufacturer may change IV-set specification significant to
system accuracy without prior notification.
System accuracy is +/- 5% typical by volume as measured using the trumpet
curve test method defined in IEC 60601-2-24 at rates of 1ml/h (23°C) and when
the pump is used with recommended sets.
START UP GRAPHS AND TRUMPET CURVES
Trumpet Curves
Measured values for second hour in each case.
Measurement interval
∆
t = 0.5 min
Observation interval p x
∆
t [min]
Start Up Graphs
Measurement interval
∆
t = 0.5 min
Measurement duration T = 120 min
Flow Q
i
(ml/h)
Start Up Graphs
Trumpet Curves