Start-up Graphs and Trumpet Curves
15
50
0
50
2 (ml/h) flow
30
60
90
t (min) 120
Delivery rate = 1 ml/h
Delivery rate = 1 ml/h
deviation
2
5
11
19
p
∆
t (min) 31
50 (ml/h) flow
37,5
30
60
90
t (min) 120
Delivery rate = 25 ml/h
(ml/h) flow
150
30
60
90
t (min) 120
Delivery rate = 100 ml/h
12,5
0
0
1,5
1
0,5
Epmax
Epmin
25
0
5
-5
Delivery rate = 25 ml/h
10 deviation
2
5
11
19
p
∆
t (min) 31
Epmax
Epmin
0
100
50
5
-5
Delivery rate = 100 ml/h
10 deviation
2
5
11
19
p
∆
t (min) 31
Epmax
Epmin
0
The graphs show the accuracy/uniformity of flow in relation to
time. Allow for the following:
The delivery behaviour resp. delivery accuracy is essentially
influenced by the types of disposables used.
Significant deviations may be encountered if use is made of
disposables others than those stated in the order data.
Trumpet Curves
Measured values for second and last 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
