Varec 2500, Installation And Operation Manual

Page: 43 / 124

Varec, Inc. 33
Connecting the Cable to a Floating Pan
Note Ensure you have completed all previous steps from your installation checklist
before proceeding.
Note Due to the resulting gross measurement inaccuracies, Varec does not recommend
that the perforated tape/tape cable be attached directly to a floating pan. Use a covered
floatwell for the best measurement accuracy.
Caution Connecting a tape/cable directly to a floating pan increases the probability that
damage will occur to the tape/cable. Tearing or snapping of the tape/cable could result in
damage to the gauge head.
1. If there is no floatwell in the floating roof and no other alternative is available, Varec rec-
ommends attaching the tape/cable to an object that is resting (unconnected) on the float-
ing roof.
2. Refer to the previous section for instructions to cut the cable to the correct length.
Connecting the Tape to a 6" Interface Float in an 8"
Stilling Well
Note Ensure you have completed all previous steps from your installation checklist
before proceeding.
Note The float guide eyes should be removed (cut off) whenever it is possible for the
eyelets to get caught on the sides of the stilling well.
1. Using the box that the tape came in, pull the tape out like a measuring tape. This keeps the
tape from becoming twisted or kinked.
2. Remove the flange with the conduit entry and elbow from the top of the stilling well. and
lay it on the tank roof.
3. At the elbow, unroll one or two turns of the perforated tape and start to feed it into the
conduit so that it appears at the bottom of the flange. If your installation is a roof-reading
application with the gauge head installed on the conduit, feed the tape through the back
of the gauge head first.
4. Cut a 6-inch (152 mm) piece of tape from the end that will be inside of the tank. Form a
'U' with this piece of tape so there is no hole in the bottom portion of the 'U'. Do not kink.
5. Form a 'U' at the end of the perforated tape. Form it to match the 'U' piece previously
formed. Do not kink.
6. Install the gauge tape and 'U' piece to the tape connector with the tape clamps and screws
provided (Figure 10 on page 31).
7. Make certain that the tape is not kinked or twisted.
8. Connect the grounding cable (A) to the tape connector (point B).
9. Attach the tape connector to the float.
10. Connect the grounding cable (A) to the float (point C).