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flowIQ® 3100 TECHNICAL DESCRIPTION
Kamstrup
A/S • Technical Description • 5512
-1242_N1
_GB •
10.2019
29
13
Pressure loss
According to OIML R49 maximum pressure loss must not exceed 0.63 bar (0.063 MPa) in range Q
1
to Q
3
.
The pressure loss in a meter increases with the square of the flow and can be stated as:
p
kv
Q
=
where:
Q = volume flow rate [m
3
/h]
kv = volume flow rate at 1 bar (0.1 MPa) pressure loss
Δ
p = pressure loss [bar]
Pressure loss table
Graph
Q
3
[m
3
/h]
Nom. diameter [mm]
K
v
Q at 0.63 bar
[m
3
/h]
B
1.6
G3/4B[R½]
4.1
3
2.5
G3/4B[R½]
G1B[R3/4]
G5/4B[R1]
3
C
4.0
G5/4[R1]
13
10
D
4.0
G5/4[R1]
24
19
6.3
G5/4[R1]
G11/2[R5/4]
10
G5/4[R1]
G11/2[R5/4]
E
10 & 16
G2B[R1½]
28
22
F
16 & 25
DN50
36.6
29
G
25 & 40
DN65
102
81
H
40 & 63
DN80
179
142
J
100
DN100 (2E)
223
177
K
100
DN100 (3E)
300
235
Pressure loss diagram