TECHNICAL DESCRIPTION
MULTICAL
®
61
5512-622 GB/01.2011/Rev. E1
36
Function
In the meter’s working range from min. cut off to saturation flow there is a linear connection between the flow rate
and the number of pulses being emitted. The below diagram shows an example of the connection between flow
and pulse frequency for ULTRAFLOW
®
61 (Q
3
=
1.6 m³/h). See
Diagram 4
.
Flow frequency (Q
3
= 1.6 m³/h)
0
20
40
60
80
100
120
140
-0,5
0,5
1,5
2,5
3,5
4,5
Flow [m³/h]
F
re
q
u
e
n
c
y
[
H
z]
u
Saturation flow (128 Hz)
Diagram 4
If the flow is lower than min. cut off or negative, ULTRAFLOW
®
24 will not send out pulses. (See
Diagram 4)
.
At flows above the saturation flow, corresponding to pulse emission with a max. pulse frequency of 128 Hz, the
max. pulse frequency will be maintained. (See
Diagram 4)
.
Table 8
shows the saturation flow (flow at 128 Hz) of
the various flow sizes/pulse figures.
Q
3
Pulse figure Flow at 128 Hz
[m³/h]
[imp./l]
[m³/h]
1.6
100
4.61
2.5
60
7.68
4
50
9.22
6.3
25
18.4
10
15
30.7
16
10
46.1
25
6
76.8
40
5
92.2
Table 8
