ADS Environmental Services Model 4000 530017 A0 - Manual (Page 53)

3-30 ADS Model 4000 Manual
6. Secure the sensor cables along the downstream edge of the
long end of the band according to the instructions in Securing
the Cables to the Ring (or Band) on page 3-43.
7. Position the band in the pipe so that the sensors will remain
below the flow surface (even during minimum flows) and
above the silt level.
8. Make sure two pre-drilled holes are visible above the flow
surface on the short end of the band. Maneuver the band so
that the lowest hole is almost at the flow surface.
9. Mark the pipe wall through the lowest hole with a drill, and
install an anchor bolt with a pneumatic drill.
10. Secure the band to the anchor bolt with a washer and 7/16-inch
(11-mm) nut.
11. Conform the band to the pipe wall around to the long end of
the band so that it is flush with the pipe wall.
Note: Temporarily remove any silt preventing the band
from sitting flush against the bottom of the pipe.
12. Install an anchor bolt through the pre-drilled hole closest to the
flow surface on the long end of the band, and secure the band
with a washer and 7/16-inch (11-mm) nut.
13. Make sure the band and sensors are flush against the pipe wall
with no gaps, and conform the rest of the band to the pipe wall.
14. Install anchor bolts, nuts, and washers at the pre-drilled hole at
the short end of the band and at the pre-drilled holes along the
long end of the band (above the flow surface) approximately
every 12 to 24 inches (30 to 61 cm) to the top end of the band.
Note: Whenever possible, secure the band with an
additional anchor bolt approximately 3 inches (8 cm)
below the flow surface on each side of the pipe. This will
help ensure that the band remains flush against the bottom
of the pipe below the flow surface.