D-160TS-7-E
48
(
4
)
Performance Characteristics
●
Pressure Loss
○
How to Determine Pressure Losses
ΔP=
ΔP
:
Pressure loss (kPa)
ρ:
Density
(
kg/m
3
)
C×
ρ
100
To determine the pressure loss, find the value C at the intersecting point of flowrate (Q) and slanted line
of the given meter size and substitute it to the formula above.
●
Meter Factors
The table below shows the nominal meter factor by each nominal size and pulse frequency at maximum
flow rate.
Nominal Size
mm
(
inch
)
Nominal Meter Factor
L/P
Pulse Freq. at
Max. Flow rate
Hz
Max. Flow rate
m
3
/h
20
(
3/4
)
0.008438
411.5
12.5
25
(
1
)
0.01733
408.7
25.5
32
(
1 1/4
)
0.03852
407.4
56.5
50
(
2
)
0.1260
407.8
185
80
(
3
)
0.4197
350.8
530
100
(
4
)
0.9432
265.1
900
150
(
6
)
3.033
192.3
2100
200
(
8
)
7.032
134.3
3400
250
(
10
)
13.57
106.4
5200
300
(
12
)
23.26
89.57
7500
400
(
16
)
52.38
63.64
12000
500
(
20
)
102.8
51.34
19000
Fig. 21.1
20 30
50
100
300 500
10
3
10
4
3×10
3
5×10
3
Flow rate Qm
3
/h [actual]
Flow rate Qm
3
/h [actual]
50
10
100
80
60
50
40
30
20
10
8
6
5
4
3
2
1
5
1
0.5
0.1
1
5
10
50
100
Nominal size 20mm(
″)
Nominal size 50mm(2
″)
80mm(3
″)
100mm(4
″)
150mm(6
″)
200mm(8
″)
250mm(10
″)
300mm(12
″)
400mm(16
″)
500mm(20
″)
25mm(1
″)
32mm(1
″)
Pres. loss Coeff. [C]
Pres. loss Coeff. [C]
●
Nominal sizes 20 to 32mm
●
Nominal sizes 50 to 500mm