ULTRAFLOW® 54 (H)/(J)
Kamstrup A/S ∙ Technical Description ∙ 5512‐1554_J1_GB _04.2018
19
6
Pressure loss
Pressure loss in a flow sensor is stated as max. pressure loss at q
p
. According to EN 1434, max. pressure loss must
not exceed 0.25 bar, unless the energy meter includes a flow controller or functions as pressure reducing
equipment.
The pressure loss in a sensor increases with the square of the flow and is usually stated as a direct proportionality
between the flow and the square root of the pressure loss:
p
k
q
q
k
p
v
v
2
2
1
where:
q
= volume flow rate
h
m
3
v
k
= volume flow rate at 1 bar pressure loss
bar
h
m
3
p
= pressure loss
;
bar
Pa
bar
5
10
1
q
p
Nom. diameter
Δp@q
p
[m³/h]
[mm]
[bar]
[m³/h]
A
0.6
DN15/DN20
0.03
3.46
1.7
B
1.5
DN15/DN20
0.09
4.89
2.4
C
2.5
DN20
0.09
8.15
4.1
D
3,5
DN25
0.07
13.42
6.8
D
6
DN25*
0.20
13.42
6.8
E
6
DN25/DN32
0.06
24.50
12.3
F
10
DN40
0.06
40.83
20.4
* Types 65-5-CHJ6-XXX and 65-5-CHJ7-XXX.
Graph
kv
Table 11. Pressure loss table.
0,01
0,1
1
0,1
1
10
100
Δp
[bar
]
Flow [m³/h]
Δp ULTRAFLOW
®
54 (H)/(J)
A
B
C
D
E
F
Figure 8. Pressure loss graphs of ULTRAFLOW
®
54 (H)/(J).
Содержание ULTRAFLOW 54 Series
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