T
Th
he
e M
Mea
eas
su
urriin
ng
g
S
Sys
ystte
em
m
Depending on the version, the Nivector is powered by an
AC voltage 21 V
…
253 V, 50/60 Hz or a DC voltage
10 V
…
55 V.
E
Ex
xtte
errn
na
al l
l lo
oa
ad
ds
s
such as signalling systems, relays, small
contactors or programmable control systems are
connected to the Nivector
iin
n s
se
erriie
es
s
. They are then
switched on or off as would occur with a mechanical
switch.
F
Fu
un
nc
cttiio
on
n
The tip of the Nivector acts as a sensor and operates as a
capacitive measuring system.
When solids touch the sensor tip, then the measuring
electronics activate an electronic switch (thyristor or
transistor).
The surface protective electrode prevents influences such
as those caused by deposits on the sides of the vessel.
The LED lights up when the electronic switch blocks, i.e.
the load current is switched off (no-load operation) (
L
LE
ED
D
).
With the integrated
M
MIIN
N--M
MA
AX
X
capability, the switch can
be set to a make or break contact (see Maximum/
Minimum Fail-Safe Mode, Page 5).
If necessary the sensitivity of the switching distance is
readjusted using the
p
po
otte
en
nttiio
om
me
ette
err
(see Sensitivity,
Page 6).
Fig. 1
The
measuring
system
Fig. 2
The Nivector
connection area
2
