ADS Environmental Services Model 4000 530017 A0 - Manual (Page 51)

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installer to secure the band to both sides of the pipe wall and to
position the Doppler velocity sensor at the bottom center of the
pipe. These options are not possible using the ½-band mount.
Therefore, the ¾-band mount is the preferable method for mounting
the sensors.
However, a ½-band mount may be appropriate for monitoring
under the following circumstances:
Large pipes with deep minimum flows
Large pipes with excessive silt present
½- (left) and ¾-band (right) mounts
¾-Band Mount
Perform the following procedure to mount the Doppler velocity
sensor and pressure depth sensor (when applicable) in a pipe using
the ¾-band mount:
1. Use a hacksaw to cut the band to the appropriate length. Cut
the band so that, when installed, it will run approximately ¾ of
the length around the inside of the pipe.
Note: The metal bands come in 8-foot (2.5-m) lengths.
Some larger pipes may require attaching two bands
together. In addition, for square-shaped pipes, use an 8-
foot (2.5-m) straight metal strip.