Specialty Meters

Specialty Meters offered by Primary Flow Signal designed for open-conduit flow for water, sewage, sludge or any other non-pressurized material.

FVLF Whole

FV-LF Fabricated Venturi – Low Flow

+/- 0.50% Uncalibrated Uncertainty
Low Reynolds, Lower Loss

  • Line size: 3/8 to 12 inches
  • Head loss % of Differential: 20.0 to 40.0 percent
  • Recommended pipe Reynolds number: Greater than 6,000 for basic accuracy
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FE Whole

FE Fabricated Elbow Meter

+/- 2.00% Uncalibrated Uncertainty
Low Cost, Small Space Required

  • Line size: No limitations on line size
  • Recommended pipe Reynolds number: Greater than 50,000 for basic accuracy
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HN Whole

HN Halmi Nozzle

+/- 2.00% Uncalibrated Uncertainty
Low Cost, Open Channel Application

  • Line size: 6 to 48 inches
  • Head loss: Low
  • Service life: 25 years plus depending on materials
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