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HFV Smart Vortex Flow Meter

The HFV smart vortex flow meter is a volumetric flow measurement device based on the Kármán vortex effect. It is designed for accurate measurement of gas, liquid, and steam flow rates with a wide medium temperature range from -40°C to 400°C.The product offers high accuracy (±1.0% for liquids, ±1.5% for gases), excellent repeatability, and strong pressure resistance up to 6.3 MPa. With a design free of moving mechanical parts, a durable 316L stainless steel construction, and support for multiple communication protocols (4–20mA HART, RS485 Modbus), the HFV is an ideal solution for industrial steam measurement, gas metering, oil and gas, and chemical applications under harsh operating conditions requiring long-term reliability and stability.

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Category: Flow Meter

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Product Overview

The HFV Smart Vortex Flow Meter is a flow measurement device based on the Kármán vortex principle, which detects the frequency of alternating vortices generated when fluid passes through a bluff body. It is integrated with a microprocessor to enable intelligent measurement functions. With high versatility and cost-effectiveness, it is widely used in thermal power plants, heating systems, water treatment, gas metering, emission monitoring, and process flow monitoring across industries such as oil & gas, chemical, metallurgy, and power generation.

Product Features & Advantages

High accuracy: Liquid accuracy up to ±1.0% R; gas and steam accuracy up to ±1.5% R.
Temperature & pressure compensation: Real-time acquisition of medium temperature and pressure data with built-in algorithm correction, enabling accurate standard volume flow or mass flow output.
Robust structure: No moving mechanical parts, wear-resistant design, long service life, and low maintenance cost.
Multiple communication options: Standard 4–20mA and pulse output, supports RS485 (Modbus) and HART protocols. Seamless integration with PLC, SCADA, and industrial control systems for remote monitoring and configuration.
Wide operating range: Operating temperature range: -40°C to 400°C. Pressure rating up to PN63, suitable for complex working conditions.
On-site configuration & display: Supports parameter setting (e.g., fluid density, meter factor) via push buttons. LCD display shows real-time flow data.
Extended functionality & long operation time: Supports total flow reset and low-flow cutoff. Lithium battery version can operate continuously for over one year.
Pressure resistance & anti-vibration: Maximum pressure rating up to 25 MPa. Equipped with anti-vibration sensing technology, stable operation under vibration ≤1g. Body made of corrosion-resistant materials such as SUS304 and 316L.
Flexible installation: Multiple connection methods for convenient installation.

Technical Specifications

Item	Detailed Specification
Nominal Diameter	DN15 ~ DN300 (larger sizes above DN300 available in insertion type)
Accuracy Class	Gas: ±1.5%; Liquid: ±1.0%; Insertion type: ±2.5%
Temperature Range	Medium: -40°C ~ 400°C; Ambient: -20°C ~ 70°C
Main Body Material	304: general applications, mildly corrosive media 316/316L: corrosive media or sanitary applications
Sensor Material	304, 316L, or custom materials available
Suitable Media	Gas: air, oxygen, natural gas, LPG, etc. Liquid: water, light oil, petroleum products, acids, alkalis, etc. Steam: saturated and superheated steam
Velocity Range	Gas: 5 ~ 60 m/s; Liquid: 0.5 ~ 7 m/s
Repeatability	Better than ±0.3%
Pressure Rating	1.6 MPa, 2.5 MPa, 4.0 MPa, 6.3 MPa (customizable for special applications)
Explosion-proof Rating	Ex db IIC T6 Gb
Power Supply	DC 24V, 3.6V lithium battery
Output Signal	Analog output (4–20mA), pulse output
Communication Protocol	RS485 (Modbus), HART protocol
Connection Method	Flange connection, clamp flange, insertion type, threaded connection, coupling connection