VEGA Capacitive electrodes EK … with signal conditioning instrument - Manual (Page 19)

Capacitive electrodes EK with signal conditioning instrument 19
20°
a.
b.
Mounting
Fig. 2.3 Horizontal installation
Sheet
Fig. 2.2 Shortening of the electrode
Shortening of the electrode
The dimensions of fully insulated electrodes
are fixed and must not be modified. Each
modification will destroy the instrument.
Partly insulated cable or rod electrodes can
be shortened afterwards. Note that due to
the change of the basic capacitance also the
switch point can change.
When the cable should be considerably
shortened, it can happen that an adjustment
of the electrode is not possible. A new com-
pensation of the electrode will be necessary
in this case. Note the serial number of the
electrode and call one of our sales engineers.
The electrode is compensated to the appro-
priate electrode length. For this reason you
should already state in the order if you want
to shorten the electrode.
Cable electrode EK 31 can be shortened
afterwards (see fig. 2.2). Loosen the two pins
on the gravity weight (hexagon) and remove
the two pins. Pull the cable out of the gravity
weight.
To avoid splicing of the steel cable (EK 31)
during cutting, you have to tin the cable
around the cutting position with a copper bit
or strongly tighten the cable with a wire.
Shorten the electrode cable with a metal
cutting saw or a cutting-off wheel by the
requested length.
Carry out the adjustment. The instruction is
under "4.1 Adjustment“.
Filling opening
Install the electrode such that it does not
protrude directly into the filling stream.
Should such an installation place be neces-
sary, mount a suitable sheet above or in front
of the electrode e.g. L 80 x 8 DIN 1028, etc.
Fig. 2.3
Horizontal installation
The electrodes can be mounted horizontally
to reach a very exact switch point with level
detection. We recommend to mount the elec-
trode approx. 20° inclined to the bottom, so
that build-up can be avoided.
Fig. 2.3