KROHNE LS 4100 EN - Manual (Page 14)

LS 4100/LS 4150 03/2002
14
6HWXS
4.1 Switching status
The switching status can be checked with closed instrument by means of the illuminated ring in
the upper part of the housing.
By interchanging of the connection cables, you can modify the switching status of the transistor
output (T). For the electronics version contactless electronic switch (C) you have to use a jumper
in the plug between terminal 2 and 3 to modify the switching status. You can adjust the requested
mode acc. to "4.3 Functions chart" (see "3.2 wiring plan").
A = max. detection or overfill protection,
B = min. detection or dry run protection.
4.2 Switching point
The switching point of LS 4100/LS 4150 is
preadjusted and does not require further
modifications.
The statements on the position of the switching
point (see also "2.1 Mounting instructions")
relate to water (density 1.0 g/cm
3 ). For mediums
with a different density, this switching point
shifts, depending on the density and the
installation, in the direction of the housing or
tuning fork tip.
A density change of 0.1 g/cm
3
results in a
shifting of the switching point by approx.
2.5 mm.
4.3 Functions chart
The following chart provides an overview of the switching conditions dependent on the ad-justed
mode and level. To set the mode, please read the information in "3.2 Wiring plan".
Mode A Mode B Response
of the fault
monitoring Failure of the
supply voltage
Level
individual individual
Transistor (T) conducts blocks conducts blocks blocks blocks
Contactless electrical
switch (C)
Switch
closed
Switch
open Switch
closed Switch
open Switch
open Switch
open
Signal lamp green red green red red {
Switching point with
lower density
Switching point
with higher density
Switching point
25 mm
Fig. 4.1