Oval Gear Flow Meters

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Technical Inquiries

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Oval gear flow meters are designed to function in specific applications that require accurate volume measurement of high-viscosity fluids. Some of the more common uses for oval gear flow meters include shampoos, sugar solutions, and antifreeze applications. They offer stable performance and long-term accuracy, making them a great choice for these and other similar needs.

Viscosity is the magnitude of internal friction of the liquid; the higher it is, the more it will resist proper flowing. Our oval gear flow meters will help ensure accurate readings and can measure the flow of liquids with a viscosity up to 100,000 cPs or even higher.

Choosing the proper flow meter is critical, especially when it comes to dealing with high viscosity fluids. What works for water will not work for lubricants, syrups, or gels. Contact us today and our engineers will be happy to walk you through the process of choosing the right oval gear flow meter.


General Specifications for All Ranges

  • Flowmeter ranges: from 10 ml/min (@30 cSt.) up to 500 lpm (132 gpm)
  • Accuracies: ±0.25, ±0.5 and ±1.0 % full scale or of reading
  • Viscosity range: -1 to 100,000 cP
  • Repeatability: ± 0.1 %
  • Pressure ratings: up to 10150 psi (700 bars)
  • Max. Temperature: 302 °F (150 °C)
  • Protection class: IP67 (NEMA 4)
  • Hall Effect, Reed switch or Namur sensor
  • Wide choice of materials for optimal chemical compatibility
  • Indicator / Totalizer use Metra Series – see last tab

Oval Gear Flow Meters Series OG1
Range: 0.1 to 1 lpm / 0.026 to 0.26 gpm

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Specifications

  • Flow range: 0.1 to 1 lpm (0.026 to 0.26 gpm) for water like liquid
  • 0.01 to 1 lpm (0.0026 to 0.26 gpm) for 30 cSt. oil
  • Accuracy: ± 1% FSD for water; ± 0.75% FSD for 30 cSt. oil
  • Repeatability: ± 0.1 %
  • Body material: stainless steel or Peek

Oval Gear Flow Meters Series OG2
Range: 0.15 to 4 lpm / 0.040 to 1.06 gpm

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Specifications

  • Flow range: 0.15 to 4 lpm (0.040 to 1.06 gpm) for water like liquid
  • 0.03 to 4 lpm (0.0079 to 1.06 gpm) for 30 cSt. oil
  • Accuracy: ± 1.0% FSD for water; ± 0.75% FSD for 30 cSt. oil
  • Repeatability: ± 0.1 %
  • Body material: stainless steel or PEEK
  • Special OG2 Post Mix Syrup with a range of 0.1 – 4.0 lpm
  • Wetted materials: PPS, carbon filled PEEK, Silicon / Nitrile, PFTE coated magnets
  • Accuracy: ± 1.0% FSD
  • Repeatability: ± 0.2%
  • Process connections: 1/2″ John Guest

Oval Gear Flow Meters Series OG3
Range: 0.5 to 10 lpm / 0.132 to 2.64 gpm

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Specifications

  • Flow range: 0.5 to 10 lpm (0.132 to 2.64 gpm) for water like liquid
    0.05 to 10 lpm (0.0132 to 2.64 gpm) for 30 cSt. oil
  • Accuracy: ± 0.5% FSD for water; ± 1% of reading for 30 cSt. oil
    ± 0.5% FSD for water; ± 0.5% FSD for 30 cSt. oil for PEEK body
  • Repeatability: ± 0.1 %
  • Body material: stainless steel, aluminum or Peek

Oval Gear Flow Meters Series OG4
Range: 2.5 to 50 lpm / 0.66 to 13.1 gpm

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Specifications

  • Flow range: 2.5 to 50 lpm (0.66 to 13.1 gpm) for water like liquid
    0.25 to 50 lpm (0.066 to 13.1 gpm) for 30 cSt. oil
  • Accuracy: ± 1% of reading for water; ± 0.5% of reading for 30 cSt. oil
    ± 0.5% FSD for water; ± 0.5% FSD for 30 cSt. oil for PEEK body
  • Repeatability: ± 0.1 %
  • Body material: stainless steel, aluminum or Peek

Oval Gear Flow Meters Series OG5
Range: 4 to 100 lpm / 1.06 to 26.4 gpm

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Specifications

  • Flow range: 4 to 100 lpm (1.06 to 26.4 gpm) for water like liquids
    0.5 to 100 lpm (0.132 to 26.4 gpm) for 30 cSt. oil
  • Accuracy: ± 0.75% of reading for water; ± 0.5% of reading for 30 cSt. oil
  • Repeatability: ± 0.1 %
  • Body material: stainless steel or aluminum

Oval Gear Flow Meters Series OG6
Range: 10 to 200 lpm / 2.64 to 52.8 gpm

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Specifications

  • Flow range: 10 to 200 lpm (2.64 to 52.8 gpm) for water like liquid
    2 to 200 lpm (0.528 to 52.8 gpm) for 30 cSt. oil
  • Accuracy: ± 1% of reading for water; ± 0.5% of reading for 30 cSt. oil
  • Repeatability: ± 0.1 %
  • Body material: stainless steel

Oval Gear Flow Meters Series OG7
Range: 20 to 500 lpm / 5.28 to 132 gpm

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Specifications

  • Flow range: 20 to 500 lpm (5.28 to 132 gpm) for water like liquid
    5 to 500 lpm (1.32 to 132 gpm) for 30 cSt. oil
  • Accuracy: ± 1% of reading for water; ± 0.5% of reading for 30 cSt. oil
  • Repeatability: ± 0.1 %
  • Body material: stainless steel

Totalizer / Flow Rate Indicator
Fluidwell F-Series

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Specifications

  • Pulse input from Oval Gear flow meters
  • Readout for most common engineering units
  • Liquid Crystal Display, 8 digits, alpha-numeric
  • Protection class IP67 (NEMA 4X)
  • Many options

pdf  Permissible Flow Range vs. Viscosity

Please note: Manual data files can be quite large, please be patient while downloading.
The manuals are for information purposes only and shouldn’t be used for operating the instrument