1. ChannelMaster Horizontal ADCP

2. ChannelMaster HADCP 2-beam Horizontal Broadband ADCP Smaller cells
More cells
Lower noise
Lower power
Better data

3. ChannelMaster HADCP Applications
Rivers – Index Velocity Method
Velocity, stage, discharge monitoring
Used where simple stage-discharge relationship fails
Backwater
Tidal
Locked navigation channels
Pumped canal systems

7. ChannelMaster HADCP Applications
Ports and Harbors and Waterways
Design – monitor currents before construction
Operation
Vessel traffic safety - currents
Docking

8. ChannelMaster HADCP Applications
Environmental
Velocity or flow triggered sampling
Velocity, flow warning
Hydraulics Research
Circulation studies in lakes, estuaries
Large scale turbulence in rivers

9. ChannelMaster HADCP Applications
Offshore
Monitor current near oil rigs or drill ships
Monitor current near mooring buoys
Research

10. ChannelMaster Description
2 profiling beams
x-y velocity components
1-128 cells
Select what is best for your application
Narrow beam angle – ± 20 degrees
Increases range
Better signal/noise ratio than 25 deg.
Reduced boundary interference
More homogeneous flow

11. ChannelMaster Description
Standard sensors
Temperature – need for speed of sound
Pitch and Roll – need for installation
Depth
600 kHz vertical acoustic beam
± 2mm accuracy
Pressure – ‘reality check’ for acoustic

12. ChannelMaster Description
Communications
RS-232/RS-422
SDI-12
Standard - 27 values per measurement
One instrument at a time
Concurrent – 20 values per request
Simultaneous instruments

13. ChannelMaster Description
Internal 2 MB recorder
9-18 Vdc power, external
25 meter cable
Mounting plate included
Allows removal and replacement without losing alignment

14. Competitor Comparison

15. Why Buy RDI? Performance Patented Broadband processing
For same cell size, reach same accuracy in less time, with less energy
For same energy, get better accuracy
Use smaller cells where necessary
Get more cells for detail if desired
>15 pings/second with 1200 kHz
All beams pinged simultaneously

16. Why Buy RDI? Flexibility
One RDI can cover a wide range of applications
Smaller minimum cells allows use in more shallow water
More cells allows use in wider channels

17. Why Buy RDI? Versatility
1200 kHz ChannelMaster matches or beats the maximum range and minimum cell sizes of :
1.5 and 3.0 MHz Sontek SL or
1.0 and 2.0 MHz Nortek EasyQ/EasyV
And allows use of up to 128 cells
600 kHz ChannelMaster matches or beats the maximum range and minimum cell sizes of
And gives you up to 90 meter range

18. Why Buy RDI? Versatility
300 kHz ChannelMaster matches or beats the maximum range and minimum cell sizes of:
500 kHz and 1.5 MHz Sontek SL
1.0 and 2.0 MHz Nortek EasyQ/EasyV
And gives you up to 300m range!

19. Range Comparisons

20. Why Buy RDI? Broadband ADCP Performance Patented technique
Single ping standard deviation ~7 times better than Narrowband using same cell size: i.e.: 50 narrowband pings = 1 broadband ping
Less time, less energy, needed to reach desired accuracy – save money on solar cells and batteries.
Inland applications are often low velocity: narrowband may need to average for minutes to achieve accurate result – this may cause a bias during changing flow conditions

21. Why Buy RDI? 20 degree beam angle
Fundamental assumption of constant flow at any cell range
Good in open ocean, less good in rivers
Narrower beam angle reduces effects of inhomogeneous flow – unmeasured and uncorrected bias. Most important at far end of range.

22. Who has them installed? China > 100 Mexico > 120
Great Britain > 25
USA >70
Mexico – specified after 6 month comparison vs Sontek