Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.700
Page 25
Representation of measuring range
The measuring range of the corresponding measuring value is mapped
in a linear way to the mode-specific signal range of the associated an-
alog output.
For flow velocity, the measuring range ranges from zero to the se-
lectable end of the measuring range w
N,max
(see Table 8).
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 8 Representation specification for flow velocity measurement
The measuring range of medium temperature starts at T
Min
= -20 °C
and ends at +120 °C (see Table 9).
Voltage mode (U)
Current mode (I)
𝑇
𝑀
=
140 °𝐶
10 𝑉
∙ 𝑈
𝑂𝑢𝑡,𝑇
𝑀
− 20 °𝐶
𝑇
𝑀
=
140 °𝐶
16 𝑚𝐴
∙ (𝐼
𝑂𝑢𝑡,𝑇
𝑀
− 4 𝑚𝐴) − 20 °𝐶
Table 9 Representation specification for measurement of medium temperature
110
w
N
[%]
0
20
40
80
60
100
I
Out
[mA]
20
4
21,6
12
8
16
U
Out
[V]
0
110
w
N
[%]
10
0
20
11
40
80
60
100
4
2
6
8
