It doesn’t matter if you are new to acoustic Doppler technology, or an old familiar friend, the FlowTracker provides unparalleled benefits you will only find with SonTek/YSI systems. Here is some of what sets the FlowTracker apart. 

Standard Features

• Multi-language instrument and software
  (English, Spanish, French, Italian, and German)
• Proven velocity accuracy to as low as 0.001m/s
  (0.003 ft/s) and up to 4.0 m/s (13 ft/s)
• Automatic discharge calculation - International
  techniques, including ISO and USGS standards
• Record changing gauge heights and rated
  flows, with comments in each measurement
• Automatic discharge uncertainty calculation to
  ISO standard. A FlowTracker First!
• Measure velocities in water as shallow as 2 cm
  (less than an 1 inch)
• Keypad interface with real-time velocity
  and flow display
• Automatic quality control for accurate data
  collection
• Two or three dimensional velocity measurement
• Recorded data is shielded from power loss
• Lightweight, rugged, and waterproof
• No calibration required - ever!
• Built-in temperature sensor

Optional Features

• 2-D/3-D ADV side-looking probe
• 5m flexible cable
• Deluxe SonTek two piece, top-setting
  wading rod kit (1.2 m or 4 ft) including
  case and mounting brackets
• Wading rod mounting bracket for
  controller/keypad
• Offset mounting bracket for ADV probe
• 2.4m metric rod

Expanded Description [PDF]