HEG – Oval Gear Type Flow Meter
The HEG Oval Gear Flow Meter is a high-precision positive displacement flow meter engineered for the accurate measurement of high-viscosity fluids in demanding industrial environments. With its rugged design and reliable performance, it is ideal for measuring thick, sticky liquids such as resins, paints, heavy oils, and polymer-based chemicals.
This oval gear flow meter operates independently of fluid velocity, pressure, or temperature fluctuations, making it perfect for applications that require consistent flow monitoring under variable process conditions.
Typical Applications
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Chemical Injection and Dosing Systems
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Petroleum and Fuel Transfer Operations
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Food and Beverage Processing (e.g., syrups, oils)
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Automotive Fluids Management
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Paint, Ink, and Coating Dispensing
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Pharmaceutical and Cosmetic Production
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Polymer, Resin, and Adhesive Handling
The HEG Oval Gear Flow Meter delivers accurate and repeatable measurement of viscous liquids, even under challenging flow conditions—making it a trusted solution across a wide range of positive displacement flow metering needs.
Description
The HEG Oval Gear Flow Meter is a highly accurate positive displacement flow meter designed specifically for measuring the flow of high-viscosity liquids such as oils, resins, paints, and chemicals. Commonly used in industries like petroleum, chemical processing, natural gas, and paper manufacturing, this oval gear type flow meter delivers reliable performance in demanding environments where precision is critical—especially in small-diameter pipelines.
Operating on the positive displacement flow meter principle, the device uses two oval-shaped gears that rotate as fluid passes through the chamber. Each gear revolution displaces a known, fixed volume of liquid. As the gears turn, they produce synchronized pulses that are detected by an internal sensor, providing precise flow data. A magnetic coupling and gear reduction mechanism transfers this motion to the counter, ensuring stable and consistent measurement even under variable flow conditions.
The HEG oval gear flow sensor is available with an optional digital sending unit, enabling remote monitoring of both instantaneous and cumulative flow values via an electric display. This feature allows for seamless integration into automated systems, supporting real-time flow analysis and process optimization.
Features
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Positive Displacement Accuracy: As a positive displacement flow meter, it ensures exceptionally accurate measurements by capturing a fixed volume of liquid per gear rotation, regardless of the fluid’s flow profile.
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Pressure-Driven Operation: This oval gear flow meter provides stable and precise readings even at low flow rates, since measurement is based on volume displacement, not velocity.
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High Viscosity Compatibility: Specially engineered for thick and sticky media such as heavy oils, resins, polyvinyl alcohol, and other high-viscosity chemicals, minimizing leakage and measurement errors.
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Batch or Continuous Measurement: Ideal for both continuous flow monitoring and batch dispensing, this positive displacement meter supports a wide range of process requirements in industries like chemical dosing, coatings, and fuel transfer.
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Industrial-Grade Durability: Built with robust materials to withstand harsh operating environments in the chemical, automotive, food & beverage, and oil & gas industries.
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Remote Monitoring Ready: Equipped with an optional digital sending unit, allowing for remote flow data acquisition (instantaneous and cumulative), making it suitable for integration into process automation and SCADA systems.
Specification
| Model | DN | Min. flow | Max.flow | Accuracy | Working Pressure(Mpa) |
| LC-8 | 8 | 0.04 | 0.4 | 0.5,0．2 | 1.6,2．5,4．0,6．4 |
| LC-15 | 15 | 0.16 | 1.5 | ||
| LC-20 | 20 | 0.3 | 3 | ||
| LC-25 | 25 | 0.6 | 6 | ||
| LC-40 | 40 | 1.5 | 15 | ||
| LC-50 | 50 | 2.4 | 24 | ||
| LC-80 | 80 | 6 | 60 | ||
| LC-100 | 100 | 10 | 100 | ||
| LC-150 | 150 | 12 | 120 |
FAQ
1. What is an oval gear flow meter?
An oval gear flow meter is a type of positive displacement flow meter that uses interlocking oval-shaped gears to precisely measure the volume of liquid passing through the meter. Each rotation of the gears displaces a fixed volume, enabling accurate flow readings—even at low flow rates or with high-viscosity fluids.
2. How does an oval gear flow meter work?
The oval gear flow meter working principle involves fluid pushing the gears, causing them to rotate. Each gear rotation is counted by a sensor, translating mechanical movement into a digital or analog signal. This method ensures accurate and repeatable flow measurement, regardless of changes in temperature or pressure.
3. Is the HEG Oval Gear Flow Meter suitable for viscous liquids?
Yes, the HEG Oval Gear Flow Meter is specifically designed for high-viscosity liquids such as resins, adhesives, heavy oils, paints, and syrups. Its leakage-resistant design and pressure-driven measurement technology make it ideal for thick or sticky media.
4. What are typical applications of this flow meter?
The HEG Oval Gear Flow Meter is widely used in industries such as:
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Petroleum and fuel transfer
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Chemical dosing and batching
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Food and beverage processing
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Pharmaceutical and cosmetic production
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Paints, coatings, and ink handling
5. Is this a positive displacement flow meter?
Yes, oval gear flow meters belong to the positive displacement flow meter category. They are known for their high accuracy and reliability, particularly in applications involving low flow rates and viscous liquids.
6. Can I monitor flow data remotely?
Absolutely. The HEG Oval Gear Flow Meter supports remote flow monitoring through an optional electric sending device, allowing you to track instantaneous and cumulative flow data in real time.
7. Does fluid temperature or pressure affect the measurement accuracy?
No. Since the HEG Oval Gear Flow Meter measures volume per gear rotation, its accuracy is largely unaffected by changes in fluid temperature, density, or pressure—making it highly reliable for challenging process conditions.
8. What materials is the HEG Oval Gear Flow Meter made from?
The meter features a robust, corrosion-resistant construction suitable for industrial use. Material choices depend on the application and media being measured, and may include stainless steel, aluminum, or specialized coatings for chemical resistance.
Datasheet
HEG Oval Gear Type Flow Meter Datasheet
