Required specification example:
Find the pilot air pressure for a discharge rate of 4l/min and a total lifting
range of 15m. <The transferred fluid is clean water (viscosit 1mPa⋅s,
specific gravit 1.0).>
Note 1) If the discharge pressure is required instead of the total lifting height, a total lift
of 10m corresponds to a discharge pressure of 0.1MPa.
Note 2) 1 c cle discharge rate PA3000: Approx. 22ml PA5000: Approx. 100ml
Selection procedure
1. First mark the intersection point for a discharge rate of 4l/min and a lifting
range of 15m.
2. Find the pilot air pressure for the marked point. In this case, the point is
between the discharge curves (solid lines) for SUP=0.2MPa and
SUP=0.3MPa, and based on the proportional relationship to these lines,
the pilot air pressure for this point is approximatel 0.25MPa.
Note 1) Even when switching c cles are changed for PA3000 with SUP=0.2MPa or
PA5000 with SUP=0.2MPa or 0.3MPa, there is almost no change in the lifting
height.
Required specification example:
Find the pilot air pressure for a discharge rate of 2.7l/min, a total lifting
range of 25m, and a viscosit of 100mPa⋅s.
Selection procedure
1. First find the ratio of the discharge rate for fresh water when viscosit is
100mPa⋅s from the graph at the left. It is determined to be 45%.
2. Next, in the required specification example the viscosit is 100mPa⋅s and
the discharge rate is 2.7l/min. Since this is equivalent to 45% of the dis-
charge rate for fresh water, 2.7l/min ÷ 0.45 = 6l/min, indicating that a dis-
charge rate of 6l/min is required for fresh water.
3. Finall , find the pilot air pressure and pilot air consumption rate based on
selection from the flow rate characteristic graphs.
Viscosities up to 1000mPa⋅s can be used.
Selection from flow rate characteristic graphs (for PA3000)
Selection from viscosity characteristic graph
Caution
Caution
PA313 Air consumption
PA513 Air consumption
50
40
30
20
10
0
Discharge rate l/min Discharge rate l/min
Total lifting range m
2 4 6 8 10 12
50
40
30
20
10
0
Total lifting range m
4 121620824
Find the air consumption for operation with a 4Hz switching c cle and pilot
air pressure of 0.3MPa from the air consumption graph.
Selection procedure
1. Look up from the 4Hz switching c cle to find the intersection with
SUP=0.3MPa.
2. From the point just found, draw a line to the Y-axis to find the air
consumption. The result is approximatel 50l/min.
1. These flow rate characteristics are for fresh water (viscosit 1mPa⋅s,
specific gravit 1.0).
2. The discharge rate differs greatl depending on properties (viscosit ,
specific gravit ) of the fluid being transferred and operating conditions
(lifting range, transfer distance), etc.
Calculating air consumption (for PA3000)
SUP=0.5MPa
SUP=0.3MPa
SUP=0.2MPa
SUP=0.5MPa
SUP=0.5MPa
SUP=0.3MPa
SUP=0.2MPa
SUP=0.3MPa
SUP=0.2MPa
SUP=0.5MPa
SUP=0.3MPa
SUP=0.2MPa
C cle 7Hz
C cle 5Hz
C cle 3Hz
(no change when SUP=0.2MPa)
C cle 7Hz
C cle 5Hz
C cle 3Hz
(no change when SUP=0.2, 0.3MPa)
234567
20
40
60
80
100
120
140
160
1
0
C cle (Hz)
Air consumption
l
/min (ANR)
234567
50
100
150
200
250
300
350
400
1
0
C cle (Hz)
Air consumption
l
/min (ANR)
Viscosity characteristics (flow rate correction for viscous fluids)
100
50
01 10 100 1000
Viscosit (mPa⋅s)
Ratio of discharge rate for fresh water (%)
