Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.700
Page 22
5 Signaling
LED bar (enclosure cover)
The
SCHMIDT
®
Flow Sensor SS 20.700
has four Duo-LEDs
20
(see Fig-
ure 5-1) in the enclosure cover. They either indicate the flow velocity in
fault-free operation in a quantitative way (bar graph mode) or they signal
the cause of a problem (see Table 5).
Figure 5-1
No.
State
LED 1
LED 2
LED 3
LED 4
1
Ready for operation & flow < 5 %
21
2
Flow > 5 %
3
Flow > 20 %
4
Flow > 50 %
5
Flow > 80 %
6
Flow > 100 % = overflow
7
Sensor element defective
8
Operating voltage too low
9
Operating voltage too high
10
Electronic temperature too low
11
Electronic temperature too high
12
Medium temperature too low
13
Medium temperature too high
Table 5
LED off
LED on:
Orange
LED on: Green
LED flashes
22
: Red
20
Component with two integrated LEDs (red and green).
21
„%“ of measurement range
22
Approx. 1 Hz
LED 1
