Insertion Turbine
Sight Flow Indicators
Calibration
Flowmeters: Oval gear flow meters overview
Ideal For
- Batching
- Engine test
- Oil flow
- Hydraulic fluids
- High viscosity fluids
- OEM equipment
- Chemical plant
- Hazardous areas (simple apparatus)
Standard Materials of Construction
- Body and cap
316 St St, PEEK, Aluminium, Hastelloy C
- ‘O’ Ring
Viton
- Gears
PEEK
- Magnets
Ceramic
Features
- Excellent chemical resistance
- Rugged construction
- Individual calibration
- High viscosity capability
- Low pressure loss
- No flow conditioning required
- Compact meter assembly
- Hall, reed or Namur sensor
- Good accuracy
- 0.1% repeatability
- IP67/NEMA 4 protection
- Models to 400 Bar
- Non-metallic options
* When used with our metra-smart instrument
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These compact rugged oval gear flowmeters are designed to give high performance with a low cost of ownership. These meters are happy measuring simple water like products as well as lubricating fluids. There are several versions, some can have totally non-metallic wetted components, PEEK™, ceramic and a choice of elastomer which makes these the ideal choice for the metering of aggressive chemicals. The standard inlet and outlet are BSP or NPT female threads, flanges are also available. For OEM use alternatives, including manifold mount-ings, are available. The standard models are 316 St St, aluminium, Hastelloy C and PEEK. For hazardous areas either the Namur sensor or the reed switch (simple apparatus) may be used.
Oval Gear Meter selection chart (PDF's)
% Flow vs Viscosity limit
At the heart of the meter are a pair of toothed oval gears one of which contains chemically resistant magnets, the gears rotate freely on robust bearings. Rotation is detected through the cham-ber wall by a Hall effect detector, Namur sensor or a reed switch giving a number pulses per litre passed. The output is an NPN pulse or a voltage free contact closure either of which is readily interfaced with most electronic display or recording devices. This combination of materials and technology ensures a long life prod-uct with reliable, accurate operation throughout. PEEK is a su-perb material for gear and bearing manufacture, it has excellent pressure and velocity characteristics coupled with very good ther-mal properties and chemical resistance. For fluids with viscosities above 1000cStk specially cut gears are required and the flow range is reduced for a given meter size.
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