Pressure Loss - Landis+Gyr ULTRACOLD T550 Technical Description

Pressure loss

18 Pressure loss
Nominal flowrate
qp
3
m /h
0,6
110, 190
1,5
130, 190
1,5
2,5
2,5
3,5
6
6
10
200, 300
10
15
15
25
40
60
150
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������ × (
Overall
Connection
length
mm
3
G / G 1, DN20
4,
G 1, DN20
3
110 G /
4
190 G 1, DN20
130 G 1
1
260 G 1 / DN25
4,
1
150 G 1 /
4
1
260 G 1 / , DN25
4
G 2, DN40
300 G 2
270 DN50
200 DN50
300 DN65
300 DN80
360 DN100
500 DN150
2
��
)
��
��
Pressure loss Kv-Factor
at Δp 1 bar
at qp
mbar
150
160
150
210
200
55
190
140
130
110
110
95
105
160
115
120
∆�� = ���������������� �������� ���� ������
�� = ���������������� ���� ��³/ℎ
�� = �� − ������������ ���� ∆�� = 1 ������
�� ��
Graph in
diagram
3
m /h
1,5 A
3,8 B
3,9 C
5,3 D
5,6 E
15 G
14 F
16 H
28 I
30 J
45 K
49 L
77 M
100 N
177 O
433 P
47/49