ADS Environmental Services Model 4000 530017 A0 - Manual (Page 54)

Monitor and Sensor Installation 3-31
Sensors mounted using a ¾-band mount in the pipe with and without silt
15. Run the sensor cables from the sensor location in the pipe to
the monitor location in the manhole according to the
instructions in Securing the Cables in the Pipe and Manhole on
page 3-43.
½-Band Mount
Perform the following procedure to mount the Doppler velocity
sensor and pressure depth sensor (when applicable) in a pipe using
the ½-band mount:
1. Use a hacksaw to cut the band to the appropriate length. Cut
the band so that, when installed, it will run almost completely
down the left side of the pipe.
2. Determine the best location on the band to mount the Doppler
velocity sensor. The sensor should mount as close as possible
to the bottom of the band, making sure the sensor will be both
above the silt level and below the flow surface once installed.
3. Mount the sensor onto the inside of the band with two 3-mm x
8-mm countersink screws, making sure the beveled end of the
sensor faces the upstream edge of the ring. If holes do not
exist on the band at or near the desired mounting location for
the sensor, drill holes in the band using a 7/32-inch (3-mm)
drill bit.
Note: The edge of the band with the cable tie holes is the
downstream edge.