The FK-FVM200 Miniature Vortex Flow Meter is a compact, high-precision flow measurement device designed for steam, gas and low-viscosity liquid applications.
With its integrated temperature and flow sensing design, the meter enables real-time monitoring of both flow rate and temperature in pipelines, offering an efficient and intelligent monitoring solution for industrial systems.
The device features:
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Simple and compact structure
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High measurement accuracy
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Easy installation and maintenance
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Real-time OLED display
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Multiple signal output options
It is widely used in petrochemical, electric power, metallurgy, steel manufacturing, papermaking, food processing, water treatment and battery production industries.
Compact Miniature Design
Small size, lightweight structure, ideal for limited installation spaces.
High Measurement Accuracy
Stable vortex detection ensures precise flow measurement for steam, gas and low-viscosity liquids.
Integrated Temperature & Flow Sensing
Simultaneous monitoring improves operational efficiency.
Dual Output Modes
Supports analog and digital communication for flexible system integration.
Alarm Function
Real-time alerts for abnormal flow or temperature conditions.
Union-Type Connection
Quick installation and easy removal, reducing downtime and maintenance costs.
Durable Construction
304 stainless steel base with aluminum alloy housing for excellent corrosion and scaling resistance.
IP65 Protection Rating
Reliable operation in demanding industrial environments.
Compact yet powerful vortex flow solution
Integrated temperature and flow monitoring
Easy installation with union connection
Multiple output options for automation systems
Clear OLED display with alarm function
Durable and industrial-grade design
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Integrated Flow & Temperature Monitoring
Unlike conventional vortex meters, the FK-FVM200 integrates both:
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Flow measurement
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Temperature monitoring
This all-in-one design allows simultaneous acquisition of two critical parameters, improving process efficiency and reducing installation costs.
The FK-FVM200 adopts a high-visibility OLED display with backlight, providing:
The display remains clear and readable in both bright and low-light industrial environments.
The FK-FVM200 operates based on the Kármán vortex street principle, derived from vortex formation theory proposed by Kármán and Strouhal.
When fluid flows through a triangular bluff body (vortex shedder) installed vertically inside the measuring tube, alternating vortices are generated on both sides of the bluff body. These vortices are shed periodically, forming a Kármán vortex street.
The vortex shedding frequency (F) is directly proportional to the fluid velocity (V). By detecting this frequency using a built-in sensor, the flow velocity can be calculated. Combined with the internal diameter of the meter, the volumetric and mass flow rate can be determined.
Calculation Formulas
Formula 1:
F = St × V / (m × d)
Formula 2:
Q = 3600 × F / K
Formula 3:
M = Q × ρ
Where:
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F – Vortex shedding frequency (Hz)
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St – Strouhal number (dimensionless)
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V – Average flow velocity (m/s)
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m – Ratio of arcuate flow area to pipe cross-sectional area
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d – Width of triangular bluff body (m)
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Q – Instantaneous volumetric flow rate (m³/h)
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K – Meter coefficient (pulses per cubic meter)
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M – Instantaneous mass flow rate (kg/h)
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ρ – Fluid density (kg/m³)
Note: The meter coefficient K varies depending on meter diameter and is determined through actual calibration. It represents the number of pulses output per cubic meter of fluid under working conditions.
The FK-FVM200 miniature vortex flowmeter is suitable for measuring:
Steam Flow Measurement
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Saturated steam
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Superheated steam
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Boiler steam monitoring
Gas Flow Measurement
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Compressed air
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Nitrogen
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Oxygen
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Industrial gases
Low-Viscosity Liquid Measurement
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Water
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Process liquids
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Cooling systems
Industrial Industries
Its compact design makes it especially suitable for skid-mounted systems, laboratory equipment, OEM machinery and pipeline sections with limited installation space.
