Required specifications example:
Find the pilot air pressure and pilot air consumption for a discharge rate of 6
l
/min and a discharge pressure of 0.25 MPa. <The transfer
fluid is fresh water (viscosity 1 mPa·s, specific gravity 1.0).
∗
If the total lifting height is required instead of the discharge pressure, a discharge pressure of 0.1 MPa corresponds to a total lift of 10 m.
Selection procedures:
1. First mark the intersection point for a discharge rate of 6
l
/min and a discharge pressure of 0.25 MPa.
2. Find the pilot air pressure for the marked point. In this case, the point is between the discharge curves (solid lines) for SUP = 0.4 MPa and
SUP = 0.5 MPa, and based on the proportional relationship to these lines, the pilot air pressure for this point is approximately 0.43 MPa.
3. Next find the air consumption rate. Find the intersection point for a discharge rate of 6
l
/min and a discharge curve (solid line) for SUP =
0.43 MPa. Draw a line from this point to the Y axis to determine the air consumption rate. The result should be approx. 58
l
/min (ANR).
PAP3310 Flow Characteristics
PAP3310 Air Consumption
100
50
0
1
10
100
1000
Viscosity (mPa·s)
Ratio of discharge rate against fresh water (%)
Performance Curve: Automatically Operated Type
Caution
1. These flow characteristics are for fresh water (viscosity 1 mPa·s, specific gravity 1.0).
2. The discharge rate differs greatly depending on properties (viscosity, specific gravity) of the fluid being
transferred and operating conditions (lifting range, transfer distance), etc.
3. Use 0.75 kW per 100
l
/min of air consumption as a guide for the relationship of the air consumption to the
compressor.
Viscosity Characteristics
(Flow rate correction for viscous fluids)
Required specifications example:
Find the pilot air pressure and pilot air consumption for a dis-
charge rate of 2.7
l
/min, and a viscosity of 100 mPa·s.
Selection procedures:
1. First find the ratio of the discharge rate for fresh water when
viscosity is 100 mPa·s from the graph below. It is determined
to be 45%.
2. Next, in the required specification example, the viscosity is 100
mPa·s and the discharge rate is 2.7
l
/min. Since this is equivalent
to 45% of the discharge rate for fresh water, 2.7
l
/min
÷
0.45 = 6
l
/min, indicating that a discharge rate of 6
l
/min is required for
fresh water.
3. Finally, find the pilot air pressure and pilot air consumption based
on selection from the flow characteristic graphs.
Selection from Viscosity Characteristic Graph
Caution
Viscosities up to 1000 mPa·s can be used.
Dynamic viscosity
ν
= Viscosity
µ
/Density
ρ
.
ν
=
ν
(10
–3
m
2
/s) =
µ
(mPa·s)/
ρ
(kg/m
3
)
µ
ρ
0.5
0.4
0.3
0.2
0.1
0
Discharge rate (
l
/min)
Discharge pressure (MPa)
4
2
6
14
12
10
8
SUP = 0.4 MPa
SUP = 0.3 MPa
SU
P = 0.5 M
Pa
SUP = 0.2 MPa
120
100
80
60
40
20
0
Discharge rate (
l
/min)
Air consumption (
l
/min [ANR])
4
2
6
14
12
10
8
SUP = 0.4 MPa
SUP = 0.3 MPa
SUP = 0.2 MPa
SUP for models other
than those below
PAP3310-P11
PAP3310S-
첸
S11
PAP3310S-
첸
S1113
PAP3310S-
첸
S1311
PAP3310-S11
SUP for models other
than those below
PAP3310-P11
PAP3310S-
첸
S11
PAP3310S-
첸
S1113
PAP3310S-
첸
S1311
PAP3310-S11
SUP = 0.5 MPa
Selection from Flow Characteristic Graph (PAP3310)
685
Series
PAP3000
Process Pump Clean Room
Automatically Operated Type
PA
PAP
PAX
PB
PAF
PA
첸
PB
Summary of Contents for PA3000 Series
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