6
4.3 Analogue function
• The unit provides an analogue signal that is proportional to the volumetric flow
quantity and the medium temperature�
• Within the measuring range the analogue signal is 4���20 mA�
• If the measured value is outside the measuring range or in the event of an
internal error, the current signals indicated in Figure 1 are provided�
• The measuring range is scalable:
[ASP] determines at which measured value the output signal is 4 mA�
[AEP] determines at which measured value the output signal is 20 mA�
Minimum distance between [ASP] and [AEP] = 20 % of the final value of
the measuring range�
MAW
Initial value of the measuring range
For non-scaled measuring range
(= factory setting)
MEW
Final value of the measuring range
ASP
Analogue start point
For scaled measuring range
AEP
Analogue end point
Table 1: Definitions
MEW
MAW
AEP
ASP
Q
[% MEW]
[°C]
T
-20
-40
-50
80
100 110
[°F]
176
-4
-58
-40
212 230
120
100
0
-120
-130
130
4
3,5
FOU=OFF
20
21,5
22
[mA]
FOU=On
1
2
5
4
6
5*
6*
3
Err
UL
OL Err
Figure 1: Characteristics of the analogue output according to the standard IEC 60947-5-7�
