installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
46
4.5 design envelope flow readout
tolerance
Tolerance on flow and head readings between test stand instru-
mentation and Design Envelope controller readout will be within
5% of bep flow & head values for all Design Envelope sensor-
less pump selections.
The same bep flow & head tolerance values will be carried to
the Design Envelope selection point for that model (Guarantee
point, to ansi 40.6 Hydraulic Institute Standard-See fig.4.1),
as follows:
fig. 4.1
Quadratic pressure
control curve
BEP
Guarantee &
verification point
Verification point
Head curve
Load limiting curve
End of Envelope
Sensorless Limit
Region of
5% flow & head
accuracy
Minimum speed
Nominal
pump speed
54% Nominal
pump speed
30% BEP flow 110% BEP flow
40% Nominal
pump speed
0
0
10
20
30
40
50
60
70
80
100 200 300 400 500 600 700 800
900
Flow (USgpm)
Quadratic pressure control curve
Head (ft)
The tolerance is applicable when the flow is between 30% and
110% of bep flow at Nominal Pump Speed; and the operating
point is at 54% of Nominal Pump Speed, or greater.
Nominal Pump Speed is displayed as the top speed on any
Design Envelope pump curve.
4.6 noise levels
Motor Maximum Sound Pressure Level
pump model hp [dBA]
0103-000.3 0.33 63
0103-000.5 0.5 63
0103-000.7 0.75 67
0103-001.0 1 67
1205-000.7 0.75 63
1205-001.0 1 63
1205-001.5 1.5 68
1205-002.0 2 68
1205-003.0 3 69.2
1503-001.0 1 68
1503-001.5 1.5 68
1505-001.5 1.5 64
1505-002.0 2 64
1505-003.0 3 62.6
1505-005.0 5 69.2
0205-001.5 1.5 64
0205H-001.5 1.5 64
0205-002.0 2 64
0205H-002.0 2 64
0205-003.0 3 62.6
0205H-003.0 3 62.6
0205-005.0 5 69.2
0205-007.5 7.5 69.2
0205-010.0 10 80.3
2505-001.5 1.5 64
2505-002.0 2 64
2505-003.0 3 62.6
2505-005.0 5 69.2
2505-007.5 7.5 69.2
0305-003.0 3 62.6
0305-005.0 5 62.6
0305-007.5 7.5 69.2
0305-010.0 10 77.0
Sound pressure level measurements made in accordance with iso
3744,± 3dB tolerance (measuring level A-Weighted)
Data based on motor frames at 380-480V. Audible noise is mainly
from the motor fan and will be reduced when operating at part load
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