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7.3
Flow rate trumpet and start up curves
The trumpet curve shows the variation of the mean flow rate accuracy
over specific observation periods. The variations are presented only as
maximum and minimum deviations from the overall mean flow within the
observation window.
Trumpet curves are presented below for a number of representative flow
rates.
The test protocol used to obtain these results is described in IEC60601-
2-24.
The curves can be helpful in determining the suitability of infusion
parameters for specific drugs and concentrations.
Set used:
activ
Set ambulatory.
Fluid used:
ISO class III water.
7.3.1
Minimum flow rate : 10 ml/h
Data as evaluated by the test methods of IEC 60601-2-24
Sampling time : 30 seconds
Figure 7.1:
Start-up and instantenous flow rate (10ml/h, over first 2h of the test period)
Sampling time : 30 seconds
Figure 7.2:
Trumpet curves For 2, 5, 11, 19, 31 minutes observation windows (10 ml/h over second
hour of the test period)
