Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.600
Page 27
Representation of measuring range
The measuring range of the corresponding measuring value is mapped
in a linear way to the mode-specific signaling range of the associated
analog output.
For flow velocity measurement, it ranges from zero up to the selectable
end of the measuring range w
N,max
(see Table 7).
Voltage mode (U)
Current mode (I)
𝑤
𝑁
=
𝑤
𝑁,𝑚𝑎𝑥
10 𝑉
∙ 𝑈
𝑂𝑢𝑡,𝑤
𝑁
𝑤
𝑁
=
𝑤
𝑁,𝑚𝑎𝑥
16 𝑚𝐴
∙ (𝐼
𝑂𝑢𝑡,𝑤
𝑁
− 4 𝑚𝐴)
Table 7 Representation specification for flow velocity measurement
The measuring range of the medium temperature starts at the selected
measuring range T
Min
and ends at 120 °C (see Table 8).
Voltage mode (U)
Current mode (I)
𝑇
𝑀
=
120 °𝐶 − 𝑇
𝑀𝑖𝑛
10 𝑉
∙ 𝑈
𝑂𝑢𝑡,𝑇
𝑀
+ 𝑇
𝑀𝑖𝑛
𝑇
𝑀
=
120 °𝐶 − 𝑇
𝑀𝑖𝑛
16 𝑚𝐴
∙ (𝐼
𝑂𝑢𝑡,𝑇
𝑀
− 4 𝑚𝐴) + 𝑇
𝑀𝑖𝑛
Table 8 Representation specification for measurement of medium temperature
U
Out
[V]
0
110
w
N
[%]
10
0
20
11
40
80
60
100
4
2
6
8
110
w
N
[%]
0
20
40
80
60
100
I
Out
[mA]
20
4
21,6
12
8
16
U
Out
[V]
T
M
[°C]
10
4
2
11
120
6
8
T
Min
I
Out
[mA]
0
T
Min
T
M
[°C]
20
4
8
22
120
12
12
16
2
