The VSAN Digital Oval Gear Flow Meter is a high-precision Positive Displacement (PD) flow meter designed for accurate measurement of both high-viscosity and low-viscosity liquids. Utilizing the proven Oval Gear Positive Displacement Principle, the flow meter directly measures the volume of liquid passing through the meter with exceptional accuracy, making it ideal for applications requiring precise flow monitoring, batching, dispensing, and custody transfer.
The flow meter consists of two precision-machined oval gears enclosed within a measuring chamber. As the liquid flows through the chamber, the gears rotate smoothly, and each complete rotation displaces a fixed volume of liquid. This enables the instrument to provide highly accurate volumetric flow measurement with minimal influence from changes in viscosity, pressure, or flow conditions.
Unlike conventional turbine flow meters, the VSAN Digital Oval Gear Flow Meter is specially designed to handle viscous liquids while maintaining excellent repeatability and measurement stability. The meter is capable of measuring diesel, furnace oil, lubricating oil, hydraulic oil, edible oil, bitumen, resin, paint, adhesive, chemicals, solvents, molasses, syrup, grease, and other viscous process fluids.
The VSAN Digital Oval Gear Flow Meter is equipped with a microprocessor-based digital transmitter featuring a large backlit LCD display that indicates instantaneous flow rate, batch quantity, totalized flow, cumulative total, and alarm status. The transmitter supports multiple communication options, including Pulse Output, 4–20 mA Analog Output, RS485 Modbus RTU, HART (Optional), and Bluetooth (Optional) for seamless integration with PLC, DCS, SCADA, and Industrial Automation systems.
Manufactured using high-quality materials such as Aluminium, Cast Iron, SS304, and SS316, the meter is available with Threaded and Flanged process connections to suit various industrial applications. With its rugged construction, high measurement accuracy, and low maintenance requirements, the VSAN Digital Oval Gear Flow Meter is widely used in Oil & Gas, Petrochemical, Chemical, Food & Beverage, Pharmaceutical, Paint, Printing Ink, Lubrication, and Fuel Distribution industries.
The VSAN Digital Oval Gear Flow Meter operates on the Positive Displacement (PD) Principle.
Inside the measuring chamber, two precision-manufactured oval gears rotate as the liquid flows through the meter. Each complete rotation of the gears traps and transfers a fixed quantity of liquid from the inlet to the outlet.
A magnetic pickup sensor or Hall-effect sensor continuously detects the rotation of the gears and generates electrical pulses. The digital transmitter counts these pulses and converts them into highly accurate measurements of instantaneous flow rate, batch quantity, and totalized flow.
Since every gear rotation represents a fixed volume of liquid, the measurement is largely independent of flow profile and provides excellent accuracy across a wide range of flow conditions. This makes the meter particularly suitable for applications involving viscous and lubricating fluids.
The positive displacement mechanism requires minimal flow conditioning and ensures reliable, stable, and repeatable measurement performance, even in demanding industrial applications involving low- and high-viscosity liquids.
The VSAN Digital Oval Gear Flow Meter is widely used for accurate volumetric measurement of clean, lubricating, and viscous liquids across various industrial sectors.
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