The VSAN Positive Displacement (PD) Flow Meter is a high-precision volumetric flow measurement instrument designed to accurately measure the flow of clean, viscous, and non-conductive liquids. Operating on the proven Positive Displacement Principle, the flow meter measures the exact volume of liquid passing through the measuring chamber, making it an ideal choice for industrial applications requiring accurate and repeatable volumetric flow measurement.
Unlike velocity-based flow meters, the VSAN PD Flow Meter directly measures the actual volume of liquid and is designed to provide reliable measurement across varying operating conditions. This makes it particularly suitable for applications requiring high accuracy, excellent repeatability, and reliable custody transfer measurement.
The VSAN PD Flow Meter incorporates precision-machined internal measuring elements that continuously trap and transfer a fixed quantity of liquid from the inlet to the outlet. Each complete cycle represents a known volume, allowing the transmitter to accurately calculate the instantaneous flow rate and totalized flow.
Manufactured using high-quality materials such as Cast Iron, Carbon Steel, Stainless Steel (SS304/SS316), Aluminium, and other special alloys, the flow meter is suitable for measuring a wide variety of industrial liquids including diesel, petrol, kerosene, furnace oil, lubricating oil, hydraulic oil, edible oils, chemicals, solvents, paints, resins, polymers, molasses, syrups, and other viscous process fluids.
The VSAN PD Flow Meter is available with mechanical register, digital indicator, pulse output, and electronic transmitter options to suit different industrial applications. The digital version supports 4–20 mA Analog Output, Pulse Output, Frequency Output, RS485 Modbus RTU, HART (Optional), and Bluetooth (Optional), enabling seamless integration with PLC, DCS, SCADA, and Industrial Automation systems.
Designed for continuous industrial operation, the VSAN PD Flow Meter offers excellent low-flow performance, minimal maintenance, long service life, and superior measurement stability, making it an ideal solution for fuel dispensing, batch processing, loading skids, custody transfer, and process automation applications.
The VSAN Positive Displacement Flow Meter operates on the Positive Displacement (PD) Principle, where a fixed volume of liquid is trapped and mechanically transferred through the measuring chamber during each operating cycle.
As the liquid enters the flow meter, it flows through specially designed measuring elements such as gears, rotors, pistons, or chambers, depending on the meter design. These internal components rotate or move in response to the flowing liquid, transferring a precise and repeatable volume of fluid from the inlet to the outlet.
Each complete rotation or movement corresponds to a known quantity of liquid. A mechanical register or electronic sensor counts these movements and converts them into the instantaneous flow rate and totalized volume.
Because the meter directly measures the actual volume of liquid rather than calculating flow based on velocity, it provides highly accurate volumetric measurement across a wide range of operating conditions. This makes the PD Flow Meter especially suitable for applications involving viscous fluids, low flow rates, and precision batching.
The VSAN Positive Displacement Flow Meter is widely used for accurate liquid measurement in industries where precision, repeatability, and reliable volumetric measurement are essential.
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