How to ensure the accuracy of vortex flow meter measurement?

Vortex flowmeter is mainly used for the flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media. There are special phenomena and problems in the process of measurement. One of the key problems is that the vapor density value deviates too much from the design value, which brings significant measurement errors to the measurement results. At present, the density measurement instrument with mature technology has not been successfully applied, which brings certain difficulties to the steam flow measurement.

In the selection process of the vortex flow meter, in addition to the selection of a high-precision type in a comprehensive consideration of the demand, other accessories of the vortex flow meter are also very important, such as the selection of flow transmitters and the selection of compensatory pressure transmitters.

Vortex flowmeter is a velocity flowmeter, which measures the volume flow rate in the working state. If you choose the table according to the volume flow rate, the mass flow rate provided by the customer should be converted into the volume flow rate under the working state, and then determine the diameter of the selected instrument against the volume flow parameter.

1, pulse vortex flowmeter is a kind of high measurement accuracy, simple installation, small maintenance, a wide range of meters, is currently widely used in petrochemical, metallurgy, textile, urban construction, energy and other industries.

The robust and durable construction of vortex flow meters contributes to their popularity in industrial settings. With no moving parts in direct contact with the fluid, these meters offer minimal maintenance requirements and extended operational life. Moreover, advancements in technology have allowed for the development of digital vortex flow meters that offer enhanced precision and communication capabilities, facilitating integration with modern process control systems.

Measuring medium：Liquid, gas, saturated steam, superheated steam
Accuracy：Liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%
Working pressure：1.6MPa，2.5MPa，4.0MPa，6.4MPa
Medium temperature：Ordinary type -40 ~ 150℃
Medium temperature type -40 ~ 250℃
High temperature type -40 ~ 350℃
Output signal：Three-wire voltage pulse, low level 0 ~ 1V,
high level > 4V, duty cycle 50%;
Two-wire system standard current 4 ~ 20mA;
Three-wire system standard current 0 ~ 10mA
Working environment：-35℃～+60℃，Humidity ≤95%RH
Working power supply：DC12V；DC24V
Material：Carbon steel, stainless steel
Explosion-proof type：Intrinsically safe ExibIICT6

Intelligent vortex flowmeters can measure air. Vortex flowmeter is a new flowmeter for flow measurement based on Karman vortex principle. It has good medium adaptability and can directly measure the volume flow of various media (including air). When measuring air, the vortex flowmeter generates regular vortices through the triangular column vortex generator set in the fluid, and the frequency of these vortices is proportional to the average velocity of the measured medium, so that the air flow can be calculated.

Vortex flow meters offer a host of advantages that make them a preferred choice in various industrial applications. One key advantage is their versatility in measuring the flow of liquids, gases, and steam. Unlike some other flow measurement technologies, vortex flow meters can handle a wide range of fluids, making them suitable for diverse industries such as oil and gas, water treatment, chemical processing, and HVAC systems.

Nominal diameter: DN15～DN300mm
Accuracy: liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%
Structure form: Integrated, split, temperature and pressure compensation
Applicable medium: liquid, gas, saturated steam, superheated steam

1, pulse vortex flowmeter is a kind of high measurement accuracy, simple installation, small maintenance, a wide range of meters, is currently widely used in petrochemical, metallurgy, textile, urban construction, energy and other industries.

1. After power-on, there is fluid flow in the pipeline, but the vortex flowmeter has no signal output

In HVAC (heating, ventilation, and air conditioning) systems, vortex flow meters are utilized to measure the flow rates of air and other gases. Their ability to provide accurate readings in a wide range of temperatures and pressures ensures efficient HVAC system operation. Vortex flow meters contribute to energy savings by enabling precise control of airflow and facilitating better management of heating and cooling processes.

Across various industries, including pharmaceuticals, food and beverage, and power generation, vortex flow meters continue to find applications in processes requiring precise fluid flow measurement. Their adaptability to different fluid types, low maintenance requirements, and reliable performance make them indispensable tools for optimizing industrial processes and ensuring the accurate allocation of resources.

The working principle of vortex flowmeter is to place a non-streamlined vortex generator in the fluid, so that the fluid is alternately separated on both sides of the generator, releasing two series of regularly staggered vortex flowmeter. In a certain range, the vortex separation frequency is proportional to the flow rate, and the vortex flowmeter can measure the flow rate of the medium by calculating the vortex separation frequency.

Due to the compressibility of the gas, its flow measurement is more complex than that of the liquid, and the output signal of the vortex flowmeter is related to the gas density in addition to the input signal, and the density of the gas is a function of temperature and pressure (referred to as temperature and pressure).

In chemical processing plants, vortex flow meters play a crucial role in measuring the flow of corrosive or abrasive liquids. Their resistance to harsh chemical environments, combined with their ability to offer accurate readings even in challenging conditions, makes them valuable assets for ensuring the efficiency and safety of chemical processes. The meters’ capability to handle different fluid types and maintain accuracy contributes to their widespread adoption in chemical industries.

Vortex flowmeter is mainly used for the flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media. It is characterized by small pressure loss, large range, high accuracy, and is almost not affected by fluid density, pressure, temperature, viscosity and other parameters when measuring volume flow under working conditions. There are no moving mechanical parts, so the reliability is high, the maintenance is small, and the instrument parameters can be stable for a long time.

Vortex flowmeter can be widely used in large, medium and small kinds of pipeline water supply and drainage, industrial circulation, sewage treatment, oil and chemical reagents and compressed air, saturated and superheated steam, natural gas and various media flow measurement and can be used as a flow transmitter in automatic control system, long service life. Points of attention for vortex flowmeter installation:

Nominal diameter: DN15～DN300mm
Accuracy: liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%
Structure form: Integrated, split, temperature and pressure compensation
Applicable medium: liquid, gas, saturated steam, superheated steam

Vortex flowmeter is mainly used to set up a vortex generating body (resistance fluid) in the fluid, from both sides of the vortex generating body alternately to produce regular vortices, to measure the flow of fluid, vortex flowmeter is mainly used for industrial pipeline fluid flow measurement, such as gas, liquid, steam and other media. It is characterized by small pressure loss, large range, high accuracy, and is almost not affected by fluid density, pressure, temperature, viscosity and other parameters when measuring volume flow under working conditions. In daily use, the output signal may be unstable, causing this phenomenon to be excluded from the following points:

Vortex flowmeter common faults and solutions

With the continuous production progress of the reform and opening up industry, it has been applied in more and more industries, and the vortex flowmeter is widely used in large, medium and small pipeline water supply and drainage, industrial circulation, and sewage treatment.

Gas flowmeter is a general term for many measurable gas flows. Today, we mainly explain the installation conditions of vortex flowmeter.

As industries continue to seek efficient and reliable flow measurement solutions, vortex flow meters stand out for their accuracy, adaptability, and durability. Their ability to provide real-time data and facilitate process optimization makes them indispensable tools for ensuring the efficient operation of various industrial processes where precise flow measurements are essential.

Measuring medium：Liquid, gas, saturated steam, superheated steam
Accuracy：Liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%
Working pressure：1.6MPa，2.5MPa，4.0MPa，6.4MPa
Medium temperature：Ordinary type -40 ~ 150℃
Medium temperature type -40 ~ 250℃
High temperature type -40 ~ 350℃
Output signal：Three-wire voltage pulse, low level 0 ~ 1V,
high level > 4V, duty cycle 50%;
Two-wire system standard current 4 ~ 20mA;
Three-wire system standard current 0 ~ 10mA
Working environment：-35℃～+60℃，Humidity ≤95%RH
Working power supply：DC12V；DC24V
Material：Carbon steel, stainless steel
Explosion-proof type：Intrinsically safe ExibIICT6

Installation environment of vortex flowmeter:

At present, many users often think that the purchase of a high-price flow meter can get accurate measurement results. The measurement of steam is different from other fluids such as water, air and other media, and there are many factors affecting its measurement in the actual measurement.

Measured Medium: Liquid, Gas, Steam
Medium Temp: -40℃~+200℃; -40℃~+280℃; 40℃~+350℃
Nominal Pressure: 1.6MPa;2.5MPa;4.0MPa;6.4MPa(Other pressure can be custom,need consult supplier)
Accuracy: 1.0%(Flange), 1.5%(Insertion)
Material: SS304(Standard), SS316(Optional)

Temperature and pressure compensation integrated vortex flowmeter performance advantages:

The precession vortex flowmeter adopts advanced microprocessing technology, which has the advantages of strong function, wide flow range, simple operation and maintenance, convenient installation and use.

One of the notable advantages of vortex flow meters is their versatility, as they can be employed in a wide range of applications across different industries. They are particularly useful for measuring the flow of fluids with varying viscosities, making them suitable for applications in petrochemical, pharmaceutical, and water treatment industries. Additionally, vortex flow meters are known for their ability to handle both high and low-flow conditions with consistent accuracy, providing reliable measurements across a broad operational range.

Measuring medium：Liquid, gas, saturated steam, superheated steam
Accuracy：Liquid ±1.0%, gas (steam) ±1.5%, plug-in ±2.5%
Working pressure：1.6MPa，2.5MPa，4.0MPa，6.4MPa
Medium temperature：Ordinary type -40 ~ 150℃
Medium temperature type -40 ~ 250℃
High temperature type -40 ~ 350℃
Output signal：Three-wire voltage pulse, low level 0 ~ 1V,
high level > 4V, duty cycle 50%;
Two-wire system standard current 4 ~ 20mA;
Three-wire system standard current 0 ~ 10mA
Working environment：-35℃～+60℃，Humidity ≤95%RH
Working power supply：DC12V；DC24V
Material：Carbon steel, stainless steel
Explosion-proof type：Intrinsically safe ExibIICT6

Vortex flowmeter is a commonly used flow meter, the use of any instrument is inseparable from daily maintenance and maintenance, whether it is its own failure or interference by external factors, we calmly respond to the occurrence of failure.

Vortex flowmeter is also known as Karman vortex flowmeter. It is a separation flowmeter made of the principle of natural oscillation of fluid. When a fluid flows at a sufficiently large velocity through an object perpendicular to the direction of the fluid, if the object is of appropriate size, it will produce a neatly aligned and reversed vortex train behind the object along two parallel lines.