KROHNE OPTISWITCH 3100C NAMUR EN - Manual (Page 23)

(after releasing the simulation key)
Sensor cur-
rent
Level relay
amplifier -
overfill pro-
tection
Level relay
amplifier -
dry run
protection
Signal lamp
amplifier -
overfill pro-
tection
Signal lamp
amplifier -
dry run
protection
Signal
lamp -
sensor
1. Low Current
(approx. 3 s)
approx. 1 mA energized currentless
2. High Current
(approx. 1.5 s)
approx.
2.2 mA
currentless energized
3. Return to the actual op-
erating condition
Note:
When used in measuring chains according to IEC 61508,
mode B (dry run protection) is not permitted.
You can carry out the function test with the outputted current
values also directly with a safety PLC or a process control
system.
Test procedure
OPTISWITCH 3100 C - with NAMUR output 23
Set up
31356
-EN
-060830