How do I identify the correct flow sensor for my application?

Document ID

Document ID TE9951

Version

Version 1.0

Status

Status Published

Published Date

Published Date 05/18/2018
Question
How do I identify the correct flow sensor for my application?
Summary
Flow sensor selection
Answer
Each application is unique and some are very specialized; what works for one application may not work for another even if it is just down the street.  The following are some general guidelines for Hach sensors but if you do not believe your application meets any of these, please contact Hach Technical Support at 800-227-4224 ext. 6063.
 
Please note: Any pipe of diameter less than 4" or pressurized system please contact McCrommeter at 1-800-220-2279
 
Sensors:
FloDar - non-contact
  • Velocity > 0.75ft/s
  • Non - mirror like water surface
  • Can be used in channels with high sediment load
Sub A/V and AV9000 - In flow
  • Level > 1"
  • Low to Mild sediment load
  • If lower levels sensor requires lower velocities to avoid rooster tailing
FloTote3 - In flow
  • Crystal clear water
  • No sediment
  • Level > 1"
  • If lower levels sensor requires lower velocities to avoid rooster tailing
US900X - Non Contact - Level Only
  • Weir or Flumes
  • No foam
BL9000 - In Flow - Level Only
  • Weir or Flumes
  • low sediment

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