Appendix
2-stage pumps
Size
Motor
speed
[rpm]
Differential
pressure
∆ p[bar]
Sound
pressure
level
Lp (A) [dB(A)]
12 900 12
25 850 12
38 800 16
50 800 12
75
650 16
100 700 12
<70
100 G
1)
500 48 71.8
150 550 16 7 0.5
200 600 12 7 1.8
200 G
1)
600 24 76.1
300 440 16 7 2.0
380 500 12 7 6.9
380 G
1)
500 24 77.3
560 360 16 7 3.6
750 400 12 7 9.3
750 G
1)
400 24 78.2
1200 280 16 75.1
1450 300 12 79.3
1450 G
1)
300 24 79.1
2300 220 16 76.7
2700 250 12 79.1
4250 180 16 78.2
5000
2)
200 12 83.5
7800 150 16 79.8
Tab. 27 Sound pressure level for 2-stage pu mps
1) Stator with uniform e lastomer wall thickness
2) Sound power level Lw (A) [dB(A)] = 96.5 dB(A)
3-stage pumps
Size
Motor
speed
[rpm]
Differential
pressure
∆ p[bar]
Sound
pressure
level
Lp (A) [dB(A)]
1 1000 24
2 1000 24
5
950 24
<70
Tab. 28 Sound pressure level for 3-stage pu mps
4-stage pumps
Size
Motor
speed
[rpm]
Differential
pressure
∆ p[bar]
Sound
pressure
level
Lp (A) [dB(A)]
12 900 24
25 850 24
<70
50 700 24 71.3
100 700 24 7 1.3
200 600 24 7 6.3
380 500 24 7 5.8
750 400 24 7 7.3
1450 300 24 78.3
Tab. 29 Sound p ressure level for 4-stage pu m ps
1+1 stage pumps
Size
Motor
speed
[rpm]
Differential
pressure
∆ p[bar]
Sound
pressure
level
Lp (A) [dB(A)]
2700 G
1)
250 24 79.9
Tab. 30 Sound pressure level for 1+1 stage pumps
1) Stator with uniform e lastomer wall thickness
2+2 stage pumps
Size
Motor
speed
[rpm]
Differential
pressure
∆ p[bar]
Sound
pressure
level
Lp (A) [dB(A)]
100 G
1)
500 48
200 G
1)
450 48
380 G
1)
350 48
750 G
1)
250 48
1450 G
1)
200 48
On request
2700 250 24 79.9
Tab. 31 Sound pressure level 2+2 stage
1) Stator with uniform e lastomer wall thickness
50 AE BA-2020.05 en-US 260371 – 176-982/0