RiverPro and RioPro ADCP Guide
October 2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 27
Mounting the Instrument
Use the following suggestions when mounting the RiverPro/RioPro ADCP:
•
It is desirable to rigidly mount the RiverPro/RioPro to the platform. Avoid the free spinning of the
RiverPro/RioPro in this application. The RiverPro/RioPro must stay in the water at all times.
•
The RiverPro/RioPro must be mounted deep enough so that turbulence caused by its movement
through the water does not allow air bubbles to be attached to the transducer faces.
•
Avoid mounting the RiverPro/RioPro near motors and thrusters. They cause air bubbles and will
cause bias to the internal compass.
•
Avoid mountings that will cause the RiverPro/RioPro to see severe accelerations.
Table 1.
Mounting Locations
Mounting Location
Advantages
Disadvantages
Over-the-Side /
Side of boat
Easy to deploy
Mounts are easy to construct and are adaptable to a
variety of boats
RiverPro/RioPro draft measurement can be easily ob-
tained
Moderate chance of directional bias in measured dis-
charges with some boats and flows
Possibly closer to ferrous metal (engines) or other
sources of electromagnetic fields (EMF)
Moderate-low risk of damage to RiverPro/RioPro from
debris or obstructions in the water
Susceptible to roll-induced bias in RiverPro/RioPro
depths
Over-the-Side /
Bow of boat
Minimizes the chance of directional bias in measured
discharges
Mounts are relatively easy to construct
Usually farther away from ferrous metal (engines) or
electromagnetic fields
Increased risk of damage to RiverPro/RioPro from de-
bris or obstructions in the water
More difficult to measure RiverPro/RioPro depth
Susceptible to pitch-induced bias in RiverPro/RioPro
depths, particularly at high speeds or during rough con-
ditions (waves)
In-Hull /
Well in center of boat
Protected from debris and obstructions
Accurate depth measurements possible
Least susceptible to pitch/roll-induced bias in
RiverPro/RioPro depths
Often requires special modifications to boat
Tethered mount
Can be deployed from bridges, fixed cableways, or a
temporary bank-operated cableway
Uses Bluetooth for communications – no cables
Requires waterproof enclosure capable of housing a
power supply and wireless radio modem for data te-
lemetry
Design of the RiverPro/RioPro mount and the power
and communications enclosure should consider the in-
creased drag on the tether that may be experienced if
the boat were to flip upside down in the water.
Increased chance of losing the RiverPro/RioPro