TECHNICAL DESCRIPTION
ULTRAFLOW
®
54 and 34
5512-385 GB/02.2014/Rev. H1
45
Diagram 14. Flow sensor tolerances q
i
:q
p
1:100 for q
p
1.5 m³/h.
8.12
Power consumption
The current consumption of ULTRAFLOW
®
is as follows:
Max. average
50 µA
Max. current
7 mA (max. 40 ms)
8.13
Interface connector/serial data
ULTRAFLOW
®
54 and 34 is fitted with a four-pole connector under the cover. Thus, it is not possible to access this
connector without breaking the seal. On delivery, the cover will be sealed with a factory seal and in connection
with verified sensors it will be a laboratory seal (legal seal).
The connector is used for:
•
Programming sensor, including adjusting the flow curves by means of METERTOOL
•
Setting the sensor to test mode
•
Reading accumulated water quantity in connection with calibration
•
External control of start/stop in connection with calibration
The interface connector is constructed as shown in
Figure 30
.
0
1
2
3
4
5
6
0,01
0,1
1
10
T
o
le
ra
n
c
e
s
[
%
]
Flow [m³/h]
Flow sensor tolerances qi:qp 1:100 (qp 1.5 m³/h)
EN1434 cl.3
EN1434 cl.2
½ EN1434 cl.2
qs
qp
0,1x qp
qi
0.01
0.1
0.1 x qp