Kamstrup MULTICAL 402, Technical Description, Page: 29 / 113

MULTICAL® 402
Kamstrup A/S · Technical Description · 5512-742_M1_GB_01.2016
29
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.
p kv Q
∆ × =
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 [
ba
r]
Flow [m³/h]
∆
p MULTICAL ® 402
A B C