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SIGMA is a US manufacturer that specializes in AV Flowmeters, Samplers, and Rain 
Gauge instrument. In 1997, Sigma became part of the Hach Company family.

MARSH-MCBIRNEY is a US manufacturer that specializes in Open Channel Flowmeters. For over 35 years, Marsh- McBirney has provided innovative and award winning open channel flowmeters designed for both portable (short-term) and permanent (long-term) flow monitoring applications. In 2006, Marsh- McBirney became part of the Hach Company family.




Velocity Sensor

Sigma Low Profile


Velocity Sensor



Details

The Sigma Low Profile Velocity Sensor’s wafer-thin design makes it ideal for accurately capturing flow velocity data in challenging high-velocity and shallow-depth sites. We recommend combining it with bubbler or ultrasonic level sensors to capture level and measure flow.

Additional Features:

  • Areas with persistent foam and reverse flow
  • Sites with high velocity and low level (>3 fps, <2")

Specifications

Parameters

 
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