SonTek FlowTracker2 Acoustic Doppler Velocimeter (FT2)

SonTek FlowTracker2 Acoustic Doppler Velocimeter (FT2)

The SonTek FlowTracker2 (FT2) is a portable, high-precision Acoustic Doppler Velocimeter (ADV®) designed for wading discharge and point-velocity measurements in rivers, channels and shallow-water environments.

Built on SonTek's proven ADV technology, the FlowTracker2 provides accurate velocity measurement in low-flow and shallow-water conditions where conventional measurement methods can struggle. Integrated GPS, Bluetooth connectivity, built-in quality control and an intuitive colour display provide an efficient system for routine hydrometric gauging and environmental flow measurement.

Advanced ADV Technology

The FlowTracker2 uses acoustic Doppler technology to measure water velocity within a small sampling volume away from the probe, minimising disturbance from the instrument itself.

The system provides 2D velocity measurement in the horizontal plane as standard, with optional 3D capability for more advanced velocity measurement and quality control.

Key advantages include:

• Accurate low-flow and shallow-water measurement

• 2D or optional 2D/3D velocity measurement

• No user calibration required

• Real-time quality control and beam diagnostics

• SmartQC audio and visual alerts

• Minimum measurement depth of approximately 0.02 m

Designed for Efficient Fieldwork

FlowTracker2 combines the ADV probe with a modern handheld interface designed to simplify field measurements and provide immediate visibility of measurement quality.

Key features include:

• Integrated GPS for georeferenced measurements

• Bluetooth and direct USB connectivity

• Detachable probe with extension cable options

• Interchangeable probes and handhelds for flexible fleet management

• Replaceable battery cartridges without loss of measurement data

• Saveable site templates for repeat monitoring locations

• Real-time velocity, discharge and QC information

• Beam-check and signal-quality displays

• Running discharge summaries

• Field comments and gauge-height recording

• Audio prompts and visual workflow guidance

Discharge Measurement

For wading discharge measurements, FlowTracker2 guides the user through each measurement vertical while automatically calculating discharge across the channel cross-section using established measurement methods.

Built-in SmartQC continuously evaluates acoustic and velocity data and alerts the operator where measurement conditions require attention. This allows potential issues to be identified in the field rather than during subsequent data processing.

Applications

The FlowTracker2 is particularly suited to:

• River and stream discharge measurement

• Hydrometric gauging

• Wading surveys

• Low-flow monitoring

• Rating-curve development and verification

• Irrigation and drainage channels

• Quarry and mine-water channels

• Weirs and flumes

• Environmental and catchment research

• Point-velocity studies

FlowTracker2 or RS5?

The FlowTracker2 is ideally suited to wadeable rivers and channels where point-velocity measurements can be collected across a cross-section. Its shallow-water and low-velocity performance makes it particularly useful for routine hydrometric gauging.

For deeper, wider or non-wadeable channels where a moving-platform measurement is more appropriate, the SonTek RS5 ADCP provides water-column velocity profiling and transect-based discharge measurement.

Flux Enviro can assist with selecting the appropriate measurement method based on water depth, channel width, velocity, site access and monitoring objectives.

Portable. Precise. Practical.

The FlowTracker2 combines proven ADV technology with modern field functionality to provide a portable and efficient solution for accurate velocity and discharge measurement.

Flux Enviro can provide FlowTracker2 systems, probes, wading equipment and accessories, alongside equipment rental, servicing and technical support.

Probe Specifications

Handheld Specifications