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YSI SonTek FlowTracker2 Handheld-ADV

Updated:2025-03-13

Brand:YSI
Model：SonTekFlowTracker2
Description: The SonTek FlowTracker2 handheld Acoustic Doppler Velocimeter (ADV?) is a handheld, portable, and precise wading discharge measurement instrument.
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Product Details

SonTek FlowTracker2 Handheld-ADV Introduction：

user's manual data sheet

The highlights of the SonTek FlowTracker2 Handheld-ADV include:

Portable. Precise. Practical.

The real advantage becomes clear from the moment you start to collect data. Each step of the way, FlowTracker2 guides you along the measurement process with visual prompts and SmartQC audio alerts just in case something important needs your attention. FlowTracker2 handheld software is intuitive, easy to navigate, and includes real-time plots of point data, QC parameters, and measurement verticals, giving you everything you need at-a-glance. Get defensible data correctly, the first time, every time, and minimize data handling back at the office.

Whenever and Wherever You Need

With rugged construction for any climate and multiple display options for both day and night, FlowTracker2 goes whenever and wherever you need it to go. This includes:

Natural Streams, Open Channels & Lakes
Irrigation Canals
Mining Channels
Water Treatment
Storm Water
Weirs / Flumes

FlowTracker2 uses SonTek’s tried-and-true ADV technology, vetted for decades by experts across the globe in hydraulics labs and wide-ranging field environments. Improved and perfected for FlowTracker2, the acoustic-based ADV sensor offers unparalleled accuracy, particularly in low flow and any wading device's shallowest water. 2-D data in the horizontal plane (2D/3D option available) allows the most comprehensive QC and understanding of flow conditions. User calibration is never required, and 24/7 tech support from SonTek and our worldwide team is only a call away.

At its core, FlowTracker2 uses SonTek’s tried-and-true ADV technology, vetted for decades by experts across the globe, in hydraulics labs, and wide-ranging field environments. Improved and perfected for FlowTracker2, the acoustic-based ADV sensor offers unparalleled accuracy, particularly in low flow and any wading device's shallowest water. 2-D data in the horizontal plane (2D/3D option available) allows the most comprehensive QC and understanding of flow conditions. User calibration is never required, and 24/7 tech support from SonTek and our worldwide team is only a call or click away.

Some of the major improvements featured in FlowTracker2 come straight from field users like you. Here is a shortlist of time-saving, fool-proof features:

Embedded GPS for georeferencing with automatic or manual fixes
Improved ADV acoustics: faster pinging, lower noise, and better standard error
Battery life icon on the screen at all times. Pre-load the spare cartridge and replace it, even mid-measurement, with no data loss
Detachable probe with extension cables to customize cable length up to 10m
Probes and handhelds are interchangeable—flexibility within agency teams and when sending equipment for service
Set up and save templates—no need to re-enter data every time you visit a site
Bluetooth or a direct USB interface with a PC
Audio prompts

There is a lot to get excited about when using the new FlowTracker2 handheld. Intuitive workflow and rich graphics make for a modernized, interactive experience. Now you can:

Rely on FlowTracker2 to automatically conform to proper methods based on depth
View beam check or QC plots directly - know immediately if you have signal or beam blockage problems
Get real-time plots of velocity and other parameters
Enter comments and gage heights with any station
View a running discharge summary
See an image of a top-set wading rod
View an on-screen tilt sensor
Edit data

Specifications：

SmartQC is a built-in quality control feature that gives you the added assurance your FlowTracker data is correct. With each measurement, data is compared to a variety of adaptive QC criteria to ensure the best measurement possible.

Probe Specifications
Acoustic Frequency	10.0 MHz
Velocity — Range	±0.001 - 4.0 m/s (±0.003 to 13 ft/s)
Velocity — Resolution	0.0001 m/s (0.0003 ft/s)
Velocity — Accuracy	+/1% of measured velocity, +/- 0.25cm/s
Weight in air	0.90 kg (1.98 lbs)
Weight in water	0.30 kg (0.66 lbs)
Sampling Volume Location	10 cm (3.93 in) from the center transducer
Minimum Depth	0.02 m (0.79 in)
Depth Measurement Range	0 to 10m (0 to 32.81ft)
Depth Measurement Resolution	0.001m (0.003ft)
Depth Sensor Accuracy	+/- 0.1% of FS (temperature compensated over full operating range) +/- 0.05% Static (steady-state at 25°C) -Additionally compensated for real-time water velocity, temperature, salinity, and altitude.


Temperature Sensor	Resolution: 0.01° C, Accuracy: 0.1° C
Tilt Sensor	Resolution: 0.001°, Accuracy: 1.0°
Communication Protocol	RS-232
Operating/Storage Temperature	-20° C to 50° C (-4° F to 122° F)
Probe Head Dimensions	(L)13.3 cm (5.22 in) (W) 6.1 cm (2.39 in) (H) 2.3 cm (0.90 in)
Standard Cable Length	1.5 m (4.92 ft)

Handheld Specifications

Input Battery Voltage	8-12 VDC
Power Supply	8 X AA Batteries
Battery Life	11 hours continuous use, typical settings¹
Power Consumption	1 W (Average)
Weight in air	0.75 kg (1.65 lbs)
Weight in water	-0.25 kg (-0.55 lbs)
GPS: H. Position Accuracy	Up to 2.5 m (8.2 ft) nominal²
GPS: Frequency	L1 (1.575 MHz) SBAS compensation (WAAS, EGNOS, MSAS, GAGAN)
LCD Resolution	320 X 240 TFT Transmissive
Bluetooth	Class 2, Range = 10 m (33 ft) nominal
USB	Micro USB, IP-67
Battery Power to Probe	8-12 VDC
Data Transfer	RS-232
Data Storage	16 GB. Up to 10k discharge measurements Up to 10 million velocity samples
Operating Temperature	Alkaline Batteries: -20° to 45°C (-4°F to 113°F) NiMH: -20° to 50°C (-4°F to 122°F)
Storage Temperature	-30° to 70° C (-22° F to 158° F)³
Waterproof Rating	IP-67 (1m submersible)
Handheld Dimensions	(L)10.4 cm (4.1 in) (W) 6.4 cm (2.5 in) (H) 23.7cm (9.3 in)