VEGA Capacitive electrodes EL 4 … 20 mA - Compact - Manual (Page 32)

32 Capacitive electrodes EL 4 … 20 mA - Compact
22652-EN-020809
Ri > 250
+
–
Fig. 2
PLC
+
–
VEGALOG VEGAMET
250
Ri < 250
+
–
Fig. 1
PLC
Setup
250 Ohm
PLC with R
i
< 250 Ohm
PLC with R
i
> 250 Ohm
VEGAMET signal conditioning instruments
or VEGALOG
Fig. 3