Data Sheet for Product

4
Smart Infrastructure
CE2N5372en
2021-12-
07
The pressure loss in a flow sensor is indicated as continuous flow q
p
.
Actual pressure loss at the indicated flow can be calculated using the Kv value, which
indicates flow at 1 bar differential pressure:
Δp = 1 bar x (Q / K
v
)
2
Δp = Pressure loss in bar
Q = Flow in m
3
/ h
K
v
= K
v
– Value at Δp = 1 bar
Pressure loss characteristic WS.5..
Nominal flow q
p
m
3
/h
Overall
length
mm
Connecting
thread
Pressure
loss at q
p
mbar
Kv value at
Δp = 1 bar
m
3
/h
Curve in the
diagram
0.6 110 G ¾ 75 2.2 A
1.5 110, 130 G ¾, G 1 135 4.1 B
2.5 130 G 1 135 6.8 C
The value can also be read graphically using the diagram as an alternative.
250
10
100
1000
0.1 1 10
P
r
e
s
s
u
r
e
l
o
s
s
i
n
m
b
a
r
Flow
in m³/h
A B C