Positive Displacement Flowmeter
Kent Elster Helix Woltmann cold water meter can be installed in horizontal, vertical or inclined pipelines without loss of accuracy. This meter not only conforms to relevant BS, ISO and EEC standards, but offers user benefits which greatly exceed these specifications.

Oval gear flowmeters are categorised as positive displacement flow technology. When liquid flows through this type of positive displacement flowmeter, two oval geared rotors measure a constant volume per rotation within a precisely machined measuring chamber.
With each rotation, a constant volume of liquid is measured. The rotation of the oval gears is sensed via magnets embedded within the rotors. These magnets transmit a high resolution pulse output. The output signal can be process externally via a remote display controller or PLC or via a variety of output/display options available as accessories attached to the flowmeters.
The positive displacement flow technology allows for precise flow measurement of most clean liquids regardless of the media conductivity. Other liquid properties also have a minimal effect on the performance of this type of meter. Flow profile conditioning is not required as with alternative flow technology options making oval gear installations simple to install in tight spaces and at an economical price.
The Tokico FRL and FRY are high-accuracy electronic positive displacement flow meters for diesel, kerosene, fuel oil, heavy oil, lubricating oil, crude palm oil and other compatible industrial liquids.
The Tokico 75 Series combines direct volumetric measurement with a large LCD display and optional pulse, analogue and alarm outputs for local indication and integration with industrial monitoring systems.
The Tokico FGB, FRO and FRP are high-accuracy mechanical positive displacement flow meters for measuring diesel, kerosene, fuel oil, heavy oil, crude palm oil and other compatible industrial liquids.
Available in sizes from 15 to 100 mm, these durable Tokico flow meters provide direct mechanical totalisation, accuracy within ±0.5% and flow capacities ranging from small-volume fuel consumption to large oil-transfer applications.