Pompetravaini AT, Руководство по эксплуатации

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Operating manual for centrifugal pumps AT - TB… - MC… - TC… - TMA
43
In order to have approximate values of the noise level for tha pump-motor assembly the sound power level of the motor
and the pump can be added. The following table shows some values of the motor noise level. The addition has to be
calculated using the diagram below.
In order to get the total sound power level it is necessary to calculate the difference between the pump and motor noise
level; by that value calculate, from the following diagram, the increment that will have to be added to the higher value of
the power sound level. Ex: motor 80 dB and pump 75 dB, level difference 5 dB, increment 1.2 dB, total power sound level
81.2 dB. Taking into account that the noise level depends on several factors, contact POMPETRAVAINI to know more
accurate values.
POWER
kW
Noise level L
p
(L
w
)
dB(A)
Noise level L
p
(L
w
)
ATEX
dB(A)
8 poles 6 poles 4 poles 2 poles 8 poles 6 poles 4 poles 2 poles
0,75 55
(63)
50
(58)
48
(56)
59
(67)
54
(62)
48
(56)
53
(61)
64
(72)
1,1 55
(63)
50
(58)
54
(62)
60
(68)
54
(62)
48
(56)
56
(64)
64
(72)
1,5 57
(65)
53
(61)
54
(62)
63
(71)
56
(64)
57
(65)
56
(64)
71
(79)
2,2 57
(65)
55
(61)
55
(63)
63
(71)
60
(68)
59
(67)
57
(65)
71
(79)
3 58 (66) 57
(65)
55
(63)
67
(75)
60
(68)
62
(70)
57
(65)
74
(82)
4 60
(68)
57
(65)
58
(66)
69
(77)
64
(72)
62
(70)
62
(70)
74
(82)
5,5 60
(68)
57
(65)
61
(69)
72
(81)
64
(72)
62
(70)
66
(74)
75
(83)
7,5 60
(68)
63
(71)
61
(69)
72
(81)
64
(72)
66
(74)
69
(77)
77
(85)
11 63
(71)
64
(72)
68
(78)
74
(82)
66
(75)
66
(74)
71
(79)
77
(86)
15 65
(73)
64
(72)
68
(78)
74
(82)
67
(77)
69
(78)
71
(79)
78
(86)
18,5 67
(75)
66
(74)
68
(78)
74
(82)
70
(81)
71
(81)
72
(81)
78
(86)
22 67
(75)
66
(74)
68
(78)
74
(82)
70
(81)
71
(81)
72
(81)
76
(85)
30 69
(80)
68
(78)
73
(84)
82
(93)
70
(81)
72
(83)
72
(82)
78
(88)
37 67
(75)
70
(81)
75
(86)
82
(93)
62
(74)
72
(83)
75
(86)
78
(88
)
45 67
(77)
72
(84)
75
(86)
82
(93)
62
(74)
67
(79)
75
(86)
80
(90)
55 67
(77)
72
(84)
78
(86)
84
(98)
63
(77)
67
(79)
77
(88)
80
(91)
75 67
(77)
77
(87)
73
(82)
79
(89)
65
(77)
67
(81)
72
(84)
77
(89)
90 67
(77)
77
(88)
73
(82)
79
(89)
65
(79)
71
(85)
72
(84)
77
(89)
110 73
(85)
77
(88)
79
(92)
84
(97)
65
(79)
72
(86)
73
(86)
77
(91)
132 76
(88)
77
(88)
79
(92)
84
(97)
72
(86)
77
(86)
85
(99)
160 78
(89)
79
(92)
84
(97)
77
(91)
85
(99)
200 79
(92)
84
(97)
77
(91)
85
(99)
250 83
(95)
84
(97)
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
2,4
2,6
2,8
3,0
0 1 2 3 4 5 6 7 8 9 10 11 12
dB difference
dB i
n
cr
em
ent
t
o
add