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Positive Displacement flow measurement devices, such as Titan Enterprises’ Oval Gear (OG) flowmeters, are one of the most widely used types of flow meter for measuring the flow of petroleum liquids and petrochemical additive injection fluids. They remain a solid choice for many applications in today’s modern process control environment, due to the OG’s suitability in harsh environments, high-pressure capability, and long-term reliability with minimum maintenance. They are also ideally suited for viscous fluids. Flexicompt Autonome
High viscosity liquids, such as fuels, thick oils, bitumen, resin and tar, require devices that are precision engineered to provide highly accurate flow measurement. The teeth in an oval gear meter are used to drive the gear and seal the central path, with the differential force being developed by the shape of the ovals rather than the gear teeth on the lobe. Oval Gears vary in size and shape depending on the resolution and flow requirement of the process application.
The pressure drop is essentially the limiting factor when it comes to metering high viscosity liquids within an application. The Oval Gears within these flow measurement devices provide a larger surface area generating a much greater driving pressure across the gears. This results in a wider flow range capability and lower pressure drop (see graph below) compared to other positive displacement meter types.
Neil Hannay, Titan Enterprises’ Senior Development Engineer, says: “The higher the viscosity of a liquid, the more pressure will be required to ‘force’ the liquid into the flowmeter and around the oval gears. It’s important to bear this in mind when selecting the correct size of oval gear flowmeter for your application. For example, more pressure will be required to push through resin than diesel.”
Almost immune from the effects of varying liquid viscosity, density and temperature, the measurement accuracy of Titans’ Oval Gear (OG) flowmeters improves as liquid viscosity increases, from a nominal 1% to around 0.1% of flow rate at higher viscosities. Titan’s standard OG models provide high accuracy up to 1000 cSt; for viscosities above 1000 cSt Titan’s specially profiled gears are supplied to facilitate additional flow of the liquid.
Titan Enterprises offer special options and adaptive designs of its Oval Gear meters to meet specific high-pressure requirements, aid chemical compatibility, and ensure safe operation in potentially explosive atmospheres. Titan’s Oval Gear range of meters include ATEX compliant IP65/NEMA 4 protection models, and devices that offer intrinsically safe options for processes that operate within harsh environmental conditions, such as explosive or corrosive atmospheres, where flowmeters are required to withstand tough environments whilst maintaining accurate and reliable measurement.
Titan’s Oval Gear meters can be pressure tested in-house up to 950 bar for custom-designed models and calibrated against diesel upon request. In the chemical industry, oval gear flowmeters are often used in conjunction with a batch controller to allow for the automatic dispensing of pre-set volumes of chemicals.
Graduated in political sciences and international relations in Paris, Anis joined the team in early 2019. Editor for IEN Europe and the new digital magazine AI IEN, he is a new tech enthusiast. Also passionate about sports, music, cultures and languages.
The company has achieved a 33% increase in sales revenue over the last 2 years. With momentum continuing across the 3 key regions - UK, Europe and the USA - Titan looks set to reach a similar level by the end of the 2023/24 fiscal year.
Titan Enterprises offers a range of high-performance flowmeters in food grade materials where both food hygiene and precision flow measurement are required.
Titan Enterprises offers a range of flowmeters in food grade material where both food hygiene and precision flow measurement are required
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Titan’s Oval Gear range of flowmeters offer excellent chemical resistance
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Titan Enterprises offers a range of flowmeters in food grade material where both food hygiene and precision flow measurement are required
Ideal for Pharmaceutical & Medical Applications
Titan’s Oval Gear range of flowmeters offer excellent chemical resistance
Titan’s range of in-line Atrato® ultrasonic flowmeters have no moving parts and can measure a wide variety of liquids
Enables to convert standard pulse output flow meters
Titan’s Oval Gear range of flowmeters offer excellent chemical resistance whilst maintaining high performance and 0.1% repeatability
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