ADS Environmental Services Model 3600 530002 A2 - Manual (Page 71)

4-38 ADS 3600 Flow Monitor O&M Manual
l Continue to apply pressure to the band and locate the pre-drilled hole closest
to the water surface on the long end of the band.
l Drill and mount the anchor bolt to the pipe surface.
l Maneuver band in position; it should be a very tight fit, and you may have a
problem lining up the pre-drilled hole with the anchor bolt.
l Secure the band to the anchor bolt with the 7/16 in. (11 mm) washer nut
combination.
l Check to make sure the band and sensors have remained flush with no gaps
present. (In old pipes with brick construction there may be periodic gaps, but
this is unavoidable; if larger gaps are present they can be filled with plumbers
putty.) If the installation is not correct, start over. This will prevent problems
in the long run.
l Go to the first anchor location and push the top of the band firmly to the pipe
surface, and drill and secure the end of the band with the anchor bolt and
corresponding washer and a 7/16 in. (11 mm) nut.
l Determine how many anchor points are required to secure the long end of the
velocity band to the apex of the pipe. An anchor bolt every 60 cm (24 in.) is
usually sufficient.
l Push the long end of the band in a downward motion, conform the band to the
pipe surface, and secure with anchor bolts.
Note: Make sure that the sensor cables are not positioned between the metal
band and the pipe as cable damage could result.
l Cable tie the ultrasonic and velocity cable together and secure with an anchor
bolt at the crown (soffit) of the pipe.
l Secure the cables with anchor bolts every 60 cm (24 in.) along the crown
(soffit) of the pipe until the invert is reached.
l Cut excess cable tie material.
1/2 Band Velocity Mount
The procedures for assembling a 1/2 band velocity mount are similar to the procedures
for the 3/4 band velocity mount. The differences between the two methods follow.
l The sensors are installed at or near the end of the sensor band.
l Silt is not a primary concern during the construction of the band because it can
be easily positioned in the correct location. The band is anchored on only one
side of the pipe.