Varec 8200, Installation And Operation Manual, Page: 12 / 38

Installation
4 Installation and Operations Manual
Figure 2-1: Typical Tank Installation
Each 8200 COT requires two wires for analog signals. DC versions are loop powered while AC
versions require an additional three wires for power.
Warning! Whenever the back cover of the gaugehead is removed, stand to one side as the
last bolt is removed. If the negator motor spring is broken, the broken pieces may cause
injury when the cover is removed.
Warning! The mechanical connections between the gauge float guide cables, the float, the
tape, and the gaugehead provide a resistance to ground that is adequate for the safe
electrical drain of electrostatic charges that may accumulate in the tank and the product.
Worker activity and worker clothing may accumulate electrostatic charges on the body of a
worker. Care should be used in flammable environments to avoid the hazard.
Tape
conduit
(pipework)
Float &
guidewires
Manhole
cover
Spot
temperature
RTD
Tank gauge
and
transmitter
Power and
communications
conduit