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Positive Displacement

Positive displacement flow meters are designed for low flow and high accuracy over a wide range of fluid viscosity (generally used for thicker liquids). 

  • They can be used in very viscous, dark colored fluids.
  • Meter requires fluid to mechanically displace components in the meter.
  • Measures moving fluid or gas by dividing the media into fixed, metered volumes.
  • A basic analogy would be holding a bucket below a tap, filling it to a set level, then quickly replacing it with another bucket and timing the rate at which the buckets are filled (or the total number of buckets for the “totalized” flow).

Residential/Farming Applications

  • Transfer of oils and liquid fluids (gasoline)
  • Residential home natural gas and water metering

Commercial/Industrial Applications

  • Chemical injection
  • Fuel measurement
  • Precision test stands
  • High pressure
  • Hydraulic testing