502-3000 Series Ztron
TM
Point Level Control
Installation
18
2.6 Wiring the Sensing
Element (cont.)
Figure 2-14
Coaxial Cable
Following are recommendations for wiring the sensing ele-
ments.
CAUTION
When pulling the cable through the conduit, do
not use pulling lubricant. Pulling lubricant
changes the electrical characteristics of the
cable.
• The remote-mount sensing element cable connections
are made to the sensing element after it has been
installed in the vessel, with the condulet attached.
• For two-terminal sensing elements, the shield wire is not
used at the sensing element end and must be taped so
that it cannot short circuit. Always terminate and use the
cote-shield pigtail wire at the electronic unit end.
• Do not coil up excess interconnecting coaxial cable. Coiled
coaxial cable acts as an antenna to pick up noise. Termina-
tion kits are available from the factory to shorten the
cable.
• No adjustment of the instrument is required to compen-
sate for cable length.
