ADS Environmental Services FlowShark QR 775003 A2 - Manual (Page 94)

Sensor Installation and Connection 3-37
7. Place the band in the pipe upstream at least 12 inches (same
distance as ultrasonic depth sensor, when present) from the
manhole invert. 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 a ¼-inch x 2 ¼-inch anchor bolt with a pneumatic drill.
10. Secure the band to the anchor bolt with a washer and 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 a ¼-inch x 2 ¼-inch 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 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 ¼-inch x 2 ¼-inch 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 to the top end of
the band.
Note:
Whenever possible, secure the band with an
additional anchor bolt approximately 3 inches 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.