ADS Environmental Services FlowShark QR 775002 A4 - Manual (Page 73)

Sensor Installation and Connection 3-39
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 drill bit.
Note: The edge of the band with the cable tie holes is the
downstream edge.
4. When applicable, mount the pressure depth sensor to the band
as follows:
 Mount the pressure depth sensor 2 inches to the left of the
Doppler velocity sensor. Make sure the sensor will be
underneath the flow once installed.
 Secure the pressure depth sensor to the band using two 4-
40 x 5/16-inch countersink screws. If the sensor does not
have screw inserts, use two medium-sized cable ties to
secure the sensor to the ring. Crisscross the cable ties
across the top of the sensor and underneath the band.
5. Secure the sensor cables along the downstream edge of the
band according to the instructions in Securing the Cables to the
Band on page 3-41.
6. 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 on the left side of the pipe so
that the sensors will remain below the flow surface (during
minimum flows) and above the silt level.
7. Orient the band so that one of the pre-drilled anchor bolt holes
is just above the flow surface.
8. Spot drill the pipe wall through the hole, install a ¼-inch x 2 ¼-
inch anchor bolt, and secure the band to the anchor bolt with a
washer and nut.
Note: Make sure the submerged portion of the band is
flush with the pipe wall. If it is not, remove the band and
conform the band to the pipe.