Preso® Differential Pressure flow meters are precision-engineered to offer exceptional turndown ratios and superior accuracy. Designed to accommodate any manufacturer’s pressure transducer, the Preso family offers a complete line of primary flow elements including Pitot tubes, venturi meters and wedge meters.

Ellipse® Pitot tube flow meters:

  • Innovative elliptical design offers 17:1 turndown ratios and very low pressure loss
  • For liquids, gases or steam
  • Pipe size: 2…120 in. (50.8…3048 mm)
  • Accuracy: ± 0.75% of reading

COIN® wedge flow meters:

  • Fluid viscosity: up to 3000 cP
  • Reynolds Number: as low as 300
  • Calibrated accuracy: ± 0.5% of reading
  • Low pressure losses
  • Maintenance free (no moving parts)
  • Suitable for abrasive slurries, viscous or dirty fluids such as bitumen or coal tar
  • Pipe size: 1/2…48 in. (13…1219 mm)
  • Custom designs available

Venturi flow meters and inserts:

  • Three designs for optimal combination of accuracy, repeatability and cost
  • Maintenance free (no moving parts)
  • Pipe size: 1/2…72 in. (13…1829 mm)
  • Calibrated accuracy: up to ± 0.25% of reading
  • Maximum pressure loss: 6% of DP
  • Custom designs available

Cone flow meters:

  • For liquids, steam, air and industrial gases
  • Pipe Size: 1.0 inch (13 mm) and larger
  • Flow Range: 10:1 and greater
  • Accuracy: ± 0.5% of actual flow
  • Standard Beta Ratio: 0.40…0.80, special betas available
  • Approvals: CRN
  • Little or no straight-run piping requirements

Pembina Controls Inc. experience in dealing with flow measurement and control extends back to our inception.

Please contact us directly to for more information or to discuss your application requirements in more detail.

Contact Us

More Information

We welcome and value your feedback please feel free to contact us at the information below. We look forward to assisting you.