Instructions for Use
– SCHMIDT
®
Flow sensor SS 20.260
Page 12
Voltage output (w
N
)
Current interface (w
N
,T
M
)
U
A
= 0 ... 10 V
R
L
≥ 10 k
I
A
= 4 ... 20 mA
R
L
≤ 300
Figure 4
The apparent ohmic resistance R
L
must be connected between the signal
output and GND (see Figure 4).
Load capacity C
L
is limited to a maximum of 10 nF.
5 Signalization
Light emitting diodes
The sensor is equipped with 2 light emitting diodes (LED) indicating its
functional state.
Figure 5
Operating state
LED 1
LED 2
Supply voltage: none, wrong polarity, too low
Sensor ready for operation
Supply voltage beyond specification range
or
Medium temperature beyond specification range
Sensor defective
Table 5
LED off
LED flashes (approx. 2 Hz): green
LED on: green
LED flashes (approx. 2 Hz): red
LED 1
LED 2
Flow