Hydro-Logic is at the forefront of  ADCP technology, providing highly accurate Doppler products for flow measurement and discharge applications in inland environments.

ADCP technology is revolutionising river flow measurement practice across the world. It not only provides superior measurement accuracy over traditional gauging methods but dramatically reduces the costs of gauging work in the field.

It can be deployed for gauging streams and rivers large and small, producing highly accurate and very detailed measurements of velocity and discharge. It is perfect for:

Monitoring of changes in water currents over time and across the stream or channel

Measuring water level changes

Rapid measurement: The ADCP floats on the surface of the water and is moved across the stream to make the measurement. Each crossing typically takes three minutes. This short time permits four measurements while still keeping the total time at each site less than 20 minutes

Confidence: Having multiple measurements delivers the discharge result plus builds your confidence in its reliability by showing repeability

Easy to use: The ADCP is easy to use, requires brief training and has a simple user display

Safe: You do not have to be in the water when using the ADCP. You can operate from either a bridge or use a tag line / pulley system

Accurate and complete: In contrast to measuring just a couple of levels (e.g. 0.2 and 0.8 of water depth) at selected verticals, the ADCP continuously measures many levels and the depth while crossing the section. This provides greater accuracy and reduce uncertainty of both the water velocities and the area of the section

Informative: The ADCP reveals the velocity structure of the section in fine detail, showing how the speeds vary from top to bottom and side to side

Together with high quality technical support and training services, you could see a rapid return on investment in using ADCPs.

It uses sound to measure its environment instead of a spinning propeller – using the Doppler principle by transmitting ultrasound frequency sound waves into a flowing stream of water.  The method is similar to the hand-held devices used in police 'speed traps'.

After a sound burst is emitted by the ADCP, echoes are returned from the particles carried by currents and from the streambed.  By analysing these sound echoes, the ADCP makes four different measurements at once:

1. Speed and direction of water currents are determined at many levels through the water depth - a 'current profile'
2. The ADCP's speed overground and path of travel are revealed by echoes scattered by the bed
3. The ADCP also measures water depth, like an echo sounder
4. Finally, a map of the spatial distribution of sediments carried by the water (e.g. a sediment plume) comes from the echoes

Supply of equipment including real-time telemetry systems

Feasibility, site survey and flow gauge design services

Full check gauging, audit and field calibration services

In-depth theoretical and field deployment training services

River gauging using a moving boat

The Workhorse Rio Grande is an accurate, rapid sampling current profiling system designed to operate from a moving boat.

It can be used to check gauging and velocity profiling in a wide range of river conditions, from shallow 30 cm deep streams to rushing rivers and tidal estuaries where no prior discharge data exists.

Read more...

 

Horizontal ADCPs For Continuous Monitoring

The compact, versatile and affordable ChannelMaster offers continuous velocity and flow measurement using the Index velocity method, even where a single cell cannot provide enough information. It is ideally suited for use in rivers, streams, estuaries, open channels, ports and harbours.

Read more...