Pressure Loss - Landis+Gyr ULTRAHEAT T230 Manual

Pressure loss

13 Pressure loss
Nominal flowrate
qp
3
m /h
0,6
1,5
110, 130
2,5
The indicated pressure loss of a flow sensor is at the nominal flowrate qp.
Using 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������ × (
1000
250
100
10
0,1
21.02.2017
Overall
Connection
length
mm
3
110 G /
4
¾
G , G1
130 G1
2
��
)
��
��
Pressure loss Kv-Factor
at Δp 1 bar
at qp
mbar
75
135
135
∆�� = ���������������� �������� ���� ������
�� = ���������������� ���� ��³/ℎ
�� = �� − ������������ ���� ∆�� = 1 ������
�� ��
1
flow rate in m³/h
Graph in
diagram
3
m /h
2.2 A
4.1 B
6.8 C
A B
25/26
C
10