ADS Environmental Services ADS TRITON+ QR 775027 A3 - Manual (Page 90)

Sensor Installation and Connection 3-29
Installing the Ring in the Pipe
The ring must fit securely in the pipe with the sensors properly
positioned to ensure the most accurate monitoring results. Install
the ring in the pipe in the following way:
1. Examine the pipe for possible obstructions to the flow or
inhibitors to ring installation.
2. Adjust the ring size to slightly less than the pipe diameter
before placing the ring in the pipe by turning the spreader
mechanism adjustment nut clockwise to contract it.
3. Place the ring in the input pipe at least 12 inches (305 mm)
upstream from the manhole or edge of the pipe with the
sensors facing upstream toward the oncoming flow. It must be
located far enough upstream from the manhole to minimize
the effect of the draw-down caused by a possible drop in the
manhole invert.
FLOW
12"
Installing the ring at least 12 inches (305 mm) upstream from the manhole
invert
Keep the following in mind:
 Be sure to mount the Surface Combo Sensor/Ultrasonic
Depth Sensor at the top (crown) of the pipe and to mount
the Peak Combo Sensor as close as possible to the bottom
center of the pipe, above any silt present and below the
flow surface (during minimum flows).