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Digital Vortex Flow Meter
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Digital Vortex Flow Meter

Digital Vortex Flow Meter

HNF40-B Intelligent Industrial Vortex Flow Meter uses the Karman vortex principle to accurately measure the flow of steam, gas, and liquids. By detecting vortex frequency generated in the pipeline, it provides reliable flow data for process control and energy management.

With no moving parts, the meter offers excellent long-term stability, low maintenance requirements, and minimal pressure loss, making it ideal for continuous industrial operation.

Widely used in power generation, chemical processing, petrochemical plants, pharmaceutical manufacturing, food production, boiler systems, and compressed air networks, it is suitable for measuring steam, compressed air, industrial gases, water, and other process fluids.

HNF40-B helps users optimize production efficiency, monitor energy consumption, reduce operating costs, and improve overall process reliability.

Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of digital vortex flow meter in China. Welcome to buy high quality digital vortex flow meter at competitive price from our factory. We also accept customized orders.

 

Key Specification Value
Technology Vortex Shedding
Measured Media Steam, Gas, Liquid
Pipe Size Range DN15–DN400
Accuracy Up to ±0.5%
Temperature Range Up to 350°C
Communication 4-20mA / RS485 / HART

>View all specifications

HNF40-B  Vortex flowmeter
 
  • Applications

    • Steam flow measurement in boilers, heating systems, and steam distribution networks.
    • Compressed air monitoring in industrial plants and manufacturing facilities.
    • Gas flow measurement for nitrogen, oxygen, natural gas, and other industrial gases.
    • Water, cooling water, condensate, and process liquid flow monitoring.
    • Chemical, petrochemical, pharmaceutical, and food processing industries.
    • Energy management, utility monitoring, and industrial automation system

Vortex Flow Meter1

HNF40-B

Advantages

  • Suitable for steam, gas, and liquid flow measurement.
  • High accuracy and stable performance.
  • No moving parts for low maintenance requirements.
  • Low pressure loss and long service life.
  • Supports high-temperature applications up to 350°C.
  • Available with 4-20mA, RS485, and HART communication.
  • Easy integration with PLC, DCS, and SCADA systems.
  • Multiple installation options for different pipeline requirements.

 

 

 

 

HNF40-A Vortex Flowmeter Parameters

Specific Parameters

Value / Description

Measurement Principle

The intelligent industrial vortex flowmeter works based on the principle of the Karman vortex street. When the fluid flows through the vortex-generating body with a triangular pillar in the pipeline, a regular vortex row (i.e., the Karman vortex street) is alternately generated on both sides downstream. The frequency of vortex separation is directly proportional to the flow rate of the fluid. The sensor detects this frequency signal through built-in piezoelectric elements, and after processing by the internal microprocessor and intelligent converter, it can accurately calculate the instantaneous and cumulative flow rate of the fluid, and output a standard signal.

Nominal Diameter Range

Standard: Full-bore type DN15~DN400
Insertion type: DN200-DN1500
Small caliber: DN6~DN12

Wetted Parts Material

304 Stainless Steel

Connection Method

Clamp type
Flange type
Insert type
Pipe thread

Maximum Measurement Error

Liquid: ±0.5% ±1.0% ±1.5%
Gas: ±0.5% ±1.0% ±1.5% ±2.5%

Measurement Range

Liquid: 0.2-690000 m³/h
Gas: 3-3750000 m³/h

Maximum Process Pressure

Standard pressure grade ≤2.5MPa~4.0MPa
Extended pressure grade (ordered by agreement) >4.0MPa~45MPa

Medium Temperature Range

Standard range: -40~+250℃~350℃
Extended range (ordered by agreement) > +350℃~500℃

Ambient Temperature Range

Non-explosion-proof location -40~+55℃
Explosion-proof location -20~+55℃

Transmitter Housing Material

Aluminum alloy shell

Display/Operation

Instantaneous flow, cumulative flow, flow unit, flow percentage, etc.

Inputs

0

Outputs

Frequency/pulse output: 2~3000Hz, low level ≤1V, high level ≥5V
Two-wire system, 4-20mA output
≤300Ω explosion-proof load, non-explosion-proof load ≤500Ω
HART, Modbus RTU (RS485), wireless transmission

Power Supply

Pulse: 12VDC~+24VDC
Current: +24VDC 4-20mA
Battery: 3.6V

Certificate

0

Functional Safety

Ex ia IIC T1~T4 Ga

 

HNF40-B 172

HNF40-B 173

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