Ageotec

Ocean current meter without need for recalibration, without moving parts, with the ability to withstand fouling and with the sampling volume moved away from the mounting structure. These are among the factors making the Aquadopp ® family the most versatile ocean current meters available. Leading oceanographers and engineers all over the world use the Aquadopp®. Typical applications are:

• Self-contained deployments
• Permanent monitoring stations
• Real time data collection on buoys, ROVs, offshore platforms, etc.

The Aquadopp® is usually configured from a PC, but it can be operated from any third-party controller using the RS232/RS422 interface (binary or ASCII) or analog outputs.

The Aquadopp® has several significant advantages when compared to other open water current meters:

• All plastic and titanium parts stops corrosion
• Small and light weight (less than 3kg!)
• No moving parts that can be blocked or sensitive parts that are easily damaged
• Low power consumption for long deployments
• A variety of sensor heads and the ability to move the sampling volume away from the mounting structure assure undisturbed measurements in all situations.

The transducer sensor head is made from machined Delrin materials and the orientation of the beams is either symmetrical or the same as in the standard "moring head" configuration.

The 6000 m Aquadopp is "the big brother" in the line of Aquadopp models. The all-titanium mechanical housing is built to last at great ocean depths. The overall design is the result of a testing and verification process that has included many of the world's largest oceanographic institutions.
Rugged and resistant, the 6000 m model still retains all the capabilities of the standard Aquadopp.
Relative to the standard system, it has a larger diameter (about 84 mm vs. 75 mm) and is built from titanium grade 2. As a result, the instrument is heavier than the standard instrument, but at 10 kg, it is still possible to handle one or two units without any lifting equipment.
The transducer sensor head is made from machined Delrin® materials and the orientation of the beams is the same as in the standard "mooring head" configuration.

The Aquadopp® profiler measures the current profile in water using acoustic Doppler technology. It is designed for stationary applications and can be deployed on the bottom, on a mooring rig, on a buoy or on any other fixed structure. It is a complete instrument and includes all the parts required for a self contained deployment with data stored to an internal data logger. Typical applications include coastal studies, online monitoring and scientific studies in rivers, lakes, and channels.

Features:

• Small blanking distances give you data close to the instrument
• Small cell sizes even in high flows
• Compass and tilt that automatically senses up or down orientation (use the profiler either way)
• Adjustable power output reduces battery consumption in shallow water
• All plastic and titanium parts, from 2.4 kg in air
• Flexible transducer design—order special heads at low additional cost
• Powerful AquaPro Win32® software for trouble free deployment planning, recording, data retrieval, and ASCII conversion
• Online data communication via radio modem
• Collect directional wave data at 1Hz or 2 Hz in between current profiles
• Inquire for deep water versions

The Continental comes in two frequencies, the 190 kHz version that is used for maximum (vertical) profiling range and the 470 kHz unit that is mostly used in 2D horizontal applications due to the narrow beam width and long profiling range in shallow water. In either case, you get the full advantage of affordable prices, flexible hardware with extra sensor interfaces, titanium and plastic housings, and an excellent software suite to control the instrument in online or stand-alone applications. The Nortek power management is included in the Continental, allowing stand-alone deployments from 3–12 months depending on battery options and range requirements.

All models come standard with compass, tilt, pressure, and temperature sensors and an internal recorder. Optional equipment includes larger recorders for longer deployment and external battery housings that do not interfere with the compass located in the low-profile Continental housing.

The AWAC is designed as a coastal monitoring system. It is small, rugged, and suitable for multi-year operation in tough environments. The mechanical design is all plastic and titanium to avoid corrosion. The AWAC is available in two transmit frequencies (1 MHz / 600 kHz) which allow for different deployment depths.

The sensor is usually mounted in a frame at the bottom, where it is protected from complications at the surface such as harsh weather, vandalism, and ship traffic. While safely located at the bottom it is operated in online or in stand-alone mode.

In stand-alone mode, the raw data are stored to the internal data logger and power comes from an external battery pack. A variety of options are available with maximum deployment lengths of 4 months with hourly wave data or 8 months when using lithium batteries.