OG2 Oval Gear Totalising Flow Meter: SummaryOG2 Oval Gear Totalising Flow Meter: FeaturesOG2 Oval Gear Totalising Flow Meter: Overview (PDF download)OG2 Oval Gear Totalising Flow Meter: Instruction Sheet (PDF download)OG2 Oval Gear Totalising Flow Meter: Order CodesOval Gear Flowmeter Technical Notes

OG2 4L/Min Oval Gear Flow Totaliser (Totalising Flow Meter)

The OG2 oval gear totaliser is designed to give high performance with a low cost of ownership. It has a standard flow range from 0.1 to 4 L/min on 30 cSt oil or post mix syrup and 0.2 to 4 L/min on water like liquids. It can have totally non-metallic wetted components, PEEK, ceramic and an elastomer which makes this the ideal choice for the metering of aggressive chemicals. The standard inlet and outlet are 1/2” John Guest push in sockets. For OEM use alternatives are available. The standard model has a PPS body, 316 St St spindles, PTFE coated magnets and silicon/Nitrile ‘O’ ring seals.

totalising flow meter & flow totaliser

OG2 Flow Totaliser – Oval Gear (PD) totalising flow meter

OG2 4L/Min Oval Gear Totaliser

At the heart of the meter is a pair of toothed oval gears one of which contains chemically resistant PTFE coated magnets, the gears rotate freely on robust 316 stainless steel spindles. Rotation is detected through the chamber wall by a reed switch or Hall effect sensor, giving approximately 1100 pulses per litre passed. The display is a 6 digit totaliser with a litre symbol as standard, other units are available for OEM customers e.g. Kgs, gals, etc. The electronic housing cover is moulded in tough polycarbonate. This combination of materials and technology ensures a long life product with reliable, accurate operation throughout its estimated four year battery life.

  • Excellent chemical resistance
  • Low cost
  • Individual calibration
  • High viscosity capability
  • Low pressure loss
  • ½” John Guest fittings
  • 4 year battery life
  • 6 digit display with units
  • Accuracy
    • 2.0% FSD water,
    • 1.0% FSD oil
  • 0.2% repeatability
  • IP67/NEMA 4 protection
  • 10 bar
  • PPS body
  • 316 St St spindles
  • PEEK gears

The OG2 oval gear totaliser (totalising flow meter) is Ideal for:

  • Post mix syrup
  • Oil flow
  • High viscosity fluids
  • OEM equipment
totalising flow meter & flow totaliser

OG2 Flow Totaliser – Oval Gear (PD) totalising flow meter

OG2 Flow Totaliser – 4 L/Min – Totalising Oval Gear Flow Meter:  Standard Materials of Construction

  • Body and cap – PPS
  • Gears – Carbon Filled PEEK
  • Seal – Silicon/Nitrile
  • Magnets – PTFE coated

OG2 4L/Min  – OG2 Flow Totaliser: Dimensions

oval gear totalising flow meter


Product codes: OG2 Flow Totaliser – 4 L/Min – Totalising Oval Gear Flow Meter
Standard: OG2-RS1-SRJ-T
Flow range– Water0.2 – 4.0 LPM
 – 30 cSt Oil0.1 – 4.0LPM
Wetted materials– BodyPPS
 – GearsCarbon filled PEEK
 – SealSilicon/Nitrile
 – MagnetPTFE coated
Accuracy– Water± 2.0 % FSD
 – 30 cSt Oil± 1.0 % FSD
Repeatability ± 0.2%
Detector type Reed Switch
Terminations ½” John Guest socket
Approximate ‘K’ factor – Pulse/L 1100
Weight 0.285kg

og2 totalising flow meter - viscosity

OG2 Totaliser (totalising flow meter) – 30cStk oil – ‘K’ Factor vs Flow Rate

OG2 4 L/Min -Totalising Oval Gear Flow Meter: Order Codes

flor totaliser - totalising flow meters

OG2 Flow Totaliser

totalising flow meter

e.g. OG2-RS1-SRJ-T is a PPS meter rated at 50°C,
10 Bar, with silicon seal, reed switch detector and
John Guest fittngs with total display.

OG2 Flow Totaliser – ‘O’ rings

Viton™ is the standard material for the OG2 totalising flow meter, although nitrile and EPDM are available as options. Due to the vast number of differing chemicals that can be put through the flowmeter various other elastomer materials may be available for the flowmeter of your choice. Please contact your sales representative for technical help on this matter.

OG2 Flow Totaliser – Magnets

The standard magnet material is ceramic which has very good chemical resistance in a wide range of fluids. They are attacked by some very strong acids and should be replaced with coated magnets if this is the case. The alternative coatings are PTFE and PVC depending on the meter size or the detection method, consult your representative for more information.

OG2 Flow Totaliser – Gear material

PEEK™ is a high temperature engineering thermoplastic. It is tough, rigid and strong with very good chemical and radiation resistance. It retains its excellent mechanical and tribological properties at high temperatures. This valuable combination of properties makes PEEK™ an ideal material for our gears. The grade of material used is carbon fibre reinforced with added graphite and PTFE, these additives give extra strength and reduced friction but remain captive in the material matrix and do not compromise the chemical resistance. Alternative gear materials may be available, contact your distributor for more details.

OG2 Flow Totaliser – High temperature rotors

Because of the high temperature characteristics of PEEK™ we can use the same material for all flowmeter temperature ranges. The standard meter is manufactured for use up to 80°C (176°F) but optional rotors are available for 100°C (212°F) and 150°C (318°F).

OG2 Flow Totaliser – High viscosity rotors

The operation of the meter requires specially modified gears for use with high viscosity fluids, over 1000 cps. Above this viscosity the maximum flow capacity of the meter is reduced and the gears are modified. The low flow capability and the overall accuracy both improve dramatically. See the graph below for the percentage reduction in maximum flow with these thicker fluids.

OG2 Flow Totaliser – Flanges and pipe connections

The standard products are shown on the appropriate data sheets but any meter can be manufactured with alternative fittings to suit your application, consult your distributor for details.

Oval Gear Flow Meters - Viscosity Graph

Oval Gear Flow Meters – Viscosity Graph

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