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Our goal is to provide a variety of choices for any flow measurement application at industry leading prices.

Oval Gear Positive Displacement Meter


The SmartMeasurement ALOVPD Oval gear flowmeter features two precisely machined rotating elliptical (oval) gears which rotate and mesh within the meter’s interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a function of the gears’ velocity. The design of the oval gear meter makes it an ideal choice for high viscosity and high pressure applications as it provides superior accuracy while offering reduced pressure drop versus traditional circular-gear type PD meters. The ALOVPD meter comes with a rugged battery-powered display module that indicates flow rate and totalized flows in user-configurable engineering units.


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  • Superior accuracy – to 0.5% of reading with ±0.03% repeatability
  • Elliptical gear design provides low pressure loss
  • Meter body is available in CS (Std), 304SS or 316SS
  • Bearings are available in CS (Std), 304SS or 316SS as well as Alnico
  • Will accommodate pressures of up to 870 psig (60 bar)
  • Will accommodate viscosities of up to 1000 cP
Flow Range:up to 2300 GPM (530 m³/hr)
Process temperature:up to 750°F (400°C)
Line size:¼”-10″ (8-250mm)
Operating pressure:up to 870 psig (60 barg)
Accuracy:±0.5% (Std), ±0.2% (Opt) of reading
Body Material:CS (Std), 304SS or 316SS (Opt)
Repeatability:±0.03% of reading
Enclosure Rating:NEMA 4X (IP 65)
Viscosity:up to 1,000 cP
Display:rate, total, low flow cut-off, battery consumption
Housing Protection:IP65; IP67; IP68
Frequency Range:1 up to 30,000 Hz
Ambient temperature:-22 to 158°F (-30 to +70°C)
Working Humidity:< 90% @ 75°F
Supply Voltage UB:+24VDC, regulated
Ex-protection:II 2 G Eex ia IIC T4, BVS 03 ATEX E 205
User Parameters:K-factors, linear correction coefficeint, flowrate input signal section points, temperature
Housing:IP 68, aluminum AlMgSiPb, blue anodized
Output:pulse, 4-20 mA or RS485

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