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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.

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

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