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Positive Displacement (PD) Flowmeters

Item# FTB3001

Positive Displacement (PD) Flowmeters FTB3001 FTB3001
  • Toothless Oval Gear Construction (Patented)
  • High Accuracy
  • Compact Design
  • High Resolution Electronic Output
  • Temperatures to 176°C (350°F)
  • Pressure Rated to 3000 PSIG with 1 NPT Fitting Standard
  • Multiple Bearing Options
  • 316 Stainless Steel Construction (Standard)
  • No Special Gears Needed for High Viscosity
  • Linearity Unaffected by Viscosity Changes
  • 1 MNPT End Fitting Standard, Flange Optional
Body Material
Connection Size
Maximum Operating Pressure
Minimum Flow Rate
Maximum Flow Rate
See All Options
Quantity Price each
1-4 C$4,145.00
5-9 C$3,937.75
10-24 C$3,854.85
25-49 C$3,689.05
50-99 C$3,606.15
100+ C$3,523.25

In stock

Lead Time ( If not in Stock): 8 weeks

Product Specs

  • Accuracy Value ±0.25% of reading
  • Fitting Type 1 MNPT
  • Measurement Type Flow
  • Maximum Liquid Temperature (Liquid Temp Range?) 176 {C} (350 {F})
  • Repeatability ±0.05%
  • Viscosity Range 100 cSt or greater

The oval-shaped smooth gears in the FTB3000 Series are used to displace a precise volume of fluid,which is passed through th emeasurement chamber during each revolution. The toothless design,working with the fluid being measured, provides a complete viscous seal within the measuring chamber. This sealing effect provides for greater flow measurement accuracy.

The displacement of the fluid is translated via a magnetic or Hall-effect pick-up into a pulse output that is proportional to the flow.

The unique design of the FTB3000 oval gear meter incorporates two smooth(toothless) oval gears positioned 90 degrees out of phase. The measurement gears are held together by two timing gears. The standard meter contains no seal between the measurement chamber and the timing chamber. The timing gears have a pitch diameter equal to the outside diameter of the measurement gears. The flow through the meter measurement chamber follows the path of least resistance. Therefore, no liquid passes through the center cavity between the measurement gears. The fluid is displaced from the inlet to the outlet via the area between the smooth oval gear and the inner diameter of the meter housing.

Conventional oval gears have teeth that mesh. One of the advantages of smooth oval gears is that the viscous flow does not get trapped or squeezed between the gears. Typically, oval gears need to have cuts made in the teeth to allow high viscosity fluids to pass. These cuts result in a decrease in accuracy.

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