MULTICAL® 21 & flowIQ® 2101 /..02 /..03
TECHNICAL DESCRIPTION
Kamstrup A/S •Technical Description • 5512-897_J1_GB • 06.2016
31
8
Pressure loss
According to OIML R49 maximum pressure loss must not exceed 0.63 bar (0.063 MPa)
in the range Q
1
- Q
3
or Qmin - Qn.
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
Δp = pressure loss [bar]
Pressure loss table
Graph
Q
3
[m
3
/h]
Qn
[m
3
/h]
Nom. diameter[mm]
K
v
Q at 0.63 bar
[m
3
/h]
A
1.6
--
DN15
3.4
2.7
B
2.5
1.5
DN20
3.4
2.7
C
4,0
2.5
DN20
6.5
5.1
Pressure loss diagram
/ flowIQ® 2101 / 2102 / 2103