Gebrauchsanweisung / Instructions for Use - SCHMIDT
®
Flow Sensor SS 20.225
19
5 Signalization
LED display
The
SCHMIDT
®
Flow Sensor SS 20.225
has two light emitting diodes
(LED) which indicate the current condition of the device or its cause (see
following table and graphic).
State of sensor
Power
Error
Operating voltage:
- None available / cabe break
- Polarity reversed
- Too low (< 19.2 V)
Initialisation (after power on)
Sensor operational
Sensor defect
Legend:
= LED off
= LED flashes (2 Hz)
= LED on
Signal outputs
The measuring range of the corresponding measuring value is mapped in
a linear way to the signaling range of its associated analog output.
Flow velocity w
N
Temperature of medium T
M
𝑤
𝑁
=
𝑤
𝑁,𝑚𝑎𝑥
10 𝑉
∙ 𝑈
𝑂𝑢𝑡
𝑇
𝑀
= (
90
10 𝑉
∙ 𝑈
𝑂𝑢𝑡
− 20) °𝐶
Flow velocity measurement ranges from zero flow up to the selectable
end of the measuring range w
N,max
(refer above, left graphic).
Measuring values larger than w
N,max
are output linearly up to 110 % of
the signaling range (11 V). For higher values of w
N
the output signals
stays constant.
