Kamstrup MULTICAL 402 - 5 Pressure Loss

MULTICAL® 402
Kamstrup A/S · Technical Description · 5512-742_M1_GB_01.2016
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5 Pressure loss
Pressure loss in a flow sensor is stated as max. pressure loss at q
p
The pressure loss in a sensor increases with the square of the flow and can be stated as:
. 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.
pkvQ ∆×=
where:
Q = volume flow rate [m³/h]
kv = volume flow rate at 1 bar pressure loss [m³/h]
∆p = pressure loss [bar]
Graphs
qp Nom. diameter
kv
Q@0.25 bar
[
m³/h
]
[mm]
[
m³/h
]
A 0.6 & 1.5 DN15…DN20 3 1.5
B 2.5 & 3.5 & 6 DN20 & DN25 13.5 6.8
C 10 & 15 DN40 & DN50 43 21.7
Table 5: Pressure loss table
Diagram 2: Pressure loss graphs
0,01
0,1
1
0,1 1 10 100
∆
p [bar]
Flow [m³/h]
∆
p MULTICAL
®
402
A
B
C