Varec 2500, Installation And Operation Manual

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2500 Automatic Tank Gauge
32 Installation and Operations Manual
1. At the outboard elbow, feed the cable through the
horizontal pipe, over the tank entry elbow and
down through the pipe to the floating roof. Check
that it is centered on the well. Continue feeding the
cable until the tape/tape cable splice is reached.
2. Drop the tape end down through the outboard
elbow, vertical pipe and gauge head to the ground
cloth. Feed out all tape until the tape/tape cable
splice is reached. Position the splice at the bottom
end of the vertical outboard elbow connection.
3. If the well is covered, drill a hole in the floating roof
to accommodate the cable and a suitable
user-furnished guide wire.
4. Enlarge the hole, if one was made in the step
above, to accommodate a suitable, user furnished
guide wire. Install the guide wire. Make certain
that it is plumb.
Figure 11: Feed the Cable and Tape
5. Thread the cable through the guide wire.
6. Attach the cable to the float with the furnished fastener and ground cable (Figure 10).
Note There should be at least 12" clearance between the top of the float at the liquid
level and the top of the float well.
7. Put the bottom of the float on the bottom of the
tank in the float well.
8. Make certain that the tape/tape cable is not kinked
or twisted.
Figure 12: Cable Length Calculation
9. Cut the cable to the correct length to ensure the
splice between the tape and cable does not run
over an elbow pulley or is drawn into the gauge
head. Consider Figure 12 and apply it to your par-
ticular installation or call Varec Help desk with
questions.
•
A+B+C+D-E = Correct Cable Length
•
Splice position “x” is optimum for empty
or out of service tanks.
•
Maximum fill and minimum read positions
should never be greater than the “F”
dimension.
1
3
4
2
Cable
Tape
Splice Position
A
B
C
F
E
x
Minimum Roof Level
D
At least 12”
Product
Level