2-26 ADS TRITON+ Manual
ParaFlow sensor sending signals to flow surface to determine range
Surface Velocity Sensor
The Surface Velocity sensor resides in the rear parabolic cavity of
the sensor body. This sensor measures the velocity of the flow by
bouncing signals off the flow surface using a method similar to the
ultrasonic depth sensor, but the velocity signals are angled toward
the flow surface. The surface velocity transducer is rear-firing
aimed toward the back parabolic reflector. The surface velocity
uses rapid pulses to measure the motion of the surface.
ADS does not recommend using this sensor for measuring velocity
at locations with smooth flow surfaces or velocities of less than 1
foot per second (0.3 m/s). It is also recommended that the ParaFlow
Sensor be installed in the manhole structure when pipe diameters
are less than or equal to 10” (254 mm). Use an ADS Topside
Bracket System for an in-manhole installation of the ParaFlow
Sensor.
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