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Fig. D
Airborne noise emitted by pumps with motors fitted by Grundfos
50 Hz
Motor
L
[kW]
pA
[dB(A)]
0.37
50
0.55
50
0.75
50
1.1
52
1.5
54
2.2
54
3.0
55
4.0
62
5.5
60
7.5
60
11
60
15
60
18.5
60
22
66
30
71
37
71
45
71
55
71
75
73
Fig. E
tm
(°C)
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
60 Hz
L
pA
[dB(A)]
55
53
54
57
59
59
60
66
65
65
65
65
65
70
75
75
75
75
77
Hv
(m)
126
100
79
62
45
40
35
30
25
20
15
12
10
8,0
6,0
5,0
4,0
3,0
2,0
1,5
1,0
0,8
0,6
0,4
0,3
0,2
0,1
19
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Inhoudsopgave
