Installing cable fittings
Page 136 OmniTrax Product Guide
5. Ensure the two decouplers line up side by side.
6. Test the connections (see Cable tests
on page 146).
7. Seal the connections with heatshrink.
8. Partially backfill the trench(es) to hold the cables in place.
Installing decouplers in hard surface slots
For applications where decouplers are being installed in concrete or asphalt slots, a long slightly
wider slot is used to accommodate the decoupler and a lazy-S pattern which provides
maintenance access and strain relief.
1. For decoupler installation, widen the slots to 2.5 cm (1 in.) for a length of 10 m (33 ft.).
2. Lay the decoupler in the slot with a lazy-S pattern in the cable.
3. Cover the wide slot completely with backer rod. The backer rod must be large enough to
compress into the slot and provide a good seal to protect the cables from the sealant.
Note Ensure that there is at least 13 mm (0.5 in.) of space between the top of
the backer rod and the top of the slot for the sealant.
Figure 114: Preparing cables for decouplers
1. Lay the two cables in the widened slot.
2. Pull one cable tight along the bottom of the slot and then cut it
at the decoupler’s specified installation location.
3. Install a connector and a decoupler on the end of the cut cable.
4. Pull the second cable tight along the bottom of the slot and then cut the second cable at the end of the decoupler.
5. Install a connector on the second cable, slide a large piece of heatshrink over the cable, and connect the second
cable to the decoupler.
6. When completed, the cable should have a slight lazy S pattern, which provides strain relief and maintenance access.
OC2 slot dimensions
(see Slot Dimensions table for SC2 sensor cable slots
heatshrink
decoupler
5 m
(16 ft.)
NOT to scale
7 cm
(2¾ in.)
2.5 cm
(1 in.)
6 cm
(2¼ in.)
14 mm
(9/16 in.)
wide slot
narrow slot
10 m
(33 ft.)
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