KROHNE OPTISWITCH 3100C NAMUR EN - Manual (Page 20)

light-weight solids, turn the potentiometer to the left stop
(>0.008 g/cm³ or >0.0003 lbs/in³). OPTISWITCH 3100 C will
thus be more sensitive and can detect light-weight solids more
reliably.
For instruments detecting solids in water, these values are not
applicable. The potentiometer is preset and must not be
changed.
The characteristics reversal can be carried out with the DIL
switch. You can choose between falling characteristic curve
(switch position max.) and rising characteristic curve (switch
position min.). This allows you to output the desired current.
Modes
l
min. - rising characteristic curve (High current when
immersed)
l
max. - falling characteristics (Low current when immersed)
The NAMUR output can be switched over to falling or rising
characteristics (see also "Function chart").
The simulation key is located in a recess on the upper side of
the oscillator. Push the simulation key with a suitable object
(screwdriver, pen, etc.).
When the key is pushed, a line break between sensor and
processing unit is simulated. The signal lamp on the sensor
extinguishes. The measuring system must signal a fault and
take on a safe condition when the key is pushed.
Keep in mind that the connected (downstream) instruments will
be activated during operation. This allows you to check the
correct function of the measuring system.
Control lamp (LED) for indication of the switching condition
l
yellow = High current >= 2.2 mA
l
dark = Low current <=1 mA
l
yellow (flashing) = Failure <=1 mA
6.3 Function chart
OPTISWITCH 3100 C level switch
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
Characteristics reversal (2)
Simulation key (3)
Signal lamp (6)
20 OPTISWITCH 3100 C - with NAMUR output
Set up
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-EN
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