Pressure Loss - Ista ultego III smart plus Technical Description

Pressure loss

13 Pressure loss
Nominal flowrate
qp
3
m /h
0.6
1.5
1.5
2.5
2.5
The indicated pressure loss of a flow sensor is at nominal flowrate qp.
With the Kv-Factor, which defines the flow rate at a pressure loss of 1 bar,
the pressure loss at any given flow rate can be calculated:
∆�� = 1������ × (
Alternatively, the value can be taken from the diagram.
1000
250
100
10
0,1
21.02.2017
Overall
Connection
length
mm G / DN
3
110, 190 G /
4
130, 190 G1
3
110 G /
4
190 G1
130 G1
2
��
)
��
��
Pressure Kv-Factor
at Δp 1 bar
loss at qp
mbar m
150 1.5
160 3.8
150 3.9
210 5.3
200 5.6
∆�� =
���������������� �������� ���� ������
�� =
���������������� ���� ��³/ℎ
�� =
�� − ������������ ���� ∆�� = 1 ������
��
��
A
1
flow rate in m³/h
Graph in
diagram
3
/h
A
B
C
D
E
B C D E
25/26
10