VEGA Conductive electrodes - Manual (Page 25)

Conductive measuring system 25
Electrical connection
1
2
3
1 2 3
1 3 2 4
5 6
9 10 1314 12
7 8
Relay output
Power supply
Transistor output
Electrode
e.g. type EL 3
Min
Mass
Max
Pump control
(Min-Max-control)
Note
Multiple rod electrodes which are connected
to several signal conditioning instruments or
a multiple channel cable require an earth rod
to avoid influencing among the signal
conditioning instruments.
Pump control (Min-Max) with overfill
protection
1 3 2 4
5 6
9 10 13 14 12
7 8
1
2 3
4
1 3 2 4
5 6
9 10 13 14 12
7 8
L
(+)
N
(–)
L
(+)
N
(–)
1
3
2
4
Max-ÜFS
Mass
Max
Min
1
2
3
1 2 3 1 2 3
;;;;;
5 6
14 13 12
2 1 1 2 4 3
9 10
1
2
3
1 2 3 1 2 3
Electrode
e.g. type EL 1
Relay output
Power supply
Transistor output
Mass
VEGATOR 532 Ex with housing
type 505
The terminal designation for the power
supply and the relay or transistor output
corresponds to that of the multipoint
connector. Just the connection of the
electrodes must be made as follows.
Double Pump control
level detection (Min-Max-control)
3.3 VEGATOR 631 Ex
To avoid interferences due to capacitive
coupling, use from a line length of 50 m an
own cable for each signal conditioning
instrument VEGATOR 631 Ex.
When you want to use a commen cable, note
that the lines of the max. and min. signal are
screened. Connect the screens to mass.
Level detection