VEGA VEGADIS 62 - Manual (Page 14)

If potential equalisation currents are expected, the connection on the
processing side must be made via a ceramic capacitor (e. g. 1 nF,
1500 V). The low frequency potential equalisation currents are thus
suppressed, but the protective effect against high frequency interfer-
ence signals remains.
Warning:
Significant potential differences exist inside galvanization plants as
well as on vessels with cathodic corrosion protection. Considerable
equalisation currents can flow over the cable screen if the screen is
grounded on both ends.
To avoid this in such applications, the cable screen must be connected
to ground potential only at one end (in the switching cabinet). The
cable screen must not be connected to the internal ground terminal in
the sensor and the outer ground terminal on the housing must not be
connected to the potential equalisation!
Information:
The metal parts of the instrument (antenna, transmitter, concentric
tube, etc.) are conductive connected with the inner and outer ground
terminal on the housing. This connection exists either directly metallic
or with instruments with external electronics via the screen of the
special connection cable.
You can find specifications to the potential connections within the
instrument in chapter "Technical data".
5 .2 Connection technology and steps
The connection of the signal cable is carried out via spring-loaded
terminals in the housing.
The indicating and adjustment module is connected via a cable with
coupling to the housing.
Proceed as follows:
1 Unscrew the housing cover
Connection technology
Connection procedure
14 VEGADIS 62
5 Connecting to power supply
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