Analysis of the Application Performance of Vortex Flowmeters —— Based on the Technical Characteristics of the BJ Series Products
In the field of industrial process control and flow metering, vortex flow meters have become the core equipment for multi-medium flow monitoring of liquids, gases, steam, etc., thanks to their precise measurement mechanism based on the Karman vortex street principle. As a representative product with mature technology, the BJ series vortex flow meters demonstrate significant advantages in application performance through structural optimization, intelligent upgrades, and multi-scenario adaptation design. Their technical characteristics and practical performance fully illustrate the core application value of modern vortex flow meters .
1. Precise Measurement: Dual Assurance of Accuracy and Range
Measurement accuracy is the core performance indicator of flow meters, and the BJ series vortex flow meters achieve a balance between high accuracy and wide range through multiple technical designs. This product uses advanced analog and Digital Signal Processing technologies, has no zero drift issue, and can achieve accuracy levels of 1.0, 1.5, and 2.5, meeting the metering accuracy requirements of different industrial scenarios.In terms of range, its common range ratio is 10:1, with a maximum of 15:1. When combined with the selection of nominal diameters from 15mm to over 300mm, it covers a wide flow range from 0.6m³/h for liquids to 11500m³/h for gases, and can stably adapt to both small and large flow conditions.
It is worth noting that this series of flow meters optimizes the measurement algorithm according to the physical characteristics of different media: for gas media, it supports flow conversion between standard and operating conditions, and accurately corrects the influence of temperature and pressure on measurement results through formulas; for liquid media, it sets up a pressure protection mechanism to prevent gasification and cavitation, ensuring measurement accuracy under complex operating conditions; for saturated steam and superheated steam, it provides a dedicated temperature and pressure compensation algorithm, which combines the density parameters of the medium under different pressures to achieve accurate measurement of steam mass flow.
2. Multi-medium Adaptation: Application Flexibility with Full-scenario Coverage
One of the core advantages of the BJ series vortex flowmeter lies in its extensive medium adaptability, which can meet the vast majority of flow measurement needs in industrial production. This product can be adapted to various media such as liquids, gases, steam, and heat transfer oil, with a temperature adaptation range covering -20°C to 350°C, a default pressure rating of PN16, support for customizing agreements for higher pressure ratings, and full adaptability to the complex working conditions of industries such as chemical, energy, pharmaceutical, and metallurgy.
In terms of material selection, the sensor and wetted parts are made of SS304 stainless steel, with customization of SS316L material available. They feature excellent corrosion resistance and dirt resistance, capable of withstanding harsh media environments such as acid-base media and high-temperature steam. For different installation scenarios, the product offers multiple installation methods, including ordinary clamping type, temperature and pressure compensated clamping type, ordinary flange connection, temperature and pressure compensated flange connection, and threaded connection. Each connection method provides detailed dimensional parameters to ensure perfect compatibility with existing pipeline systems.
3. Structure and Stability: Reliable Operation under Harsh Conditions
Factors such as vibration, water hammer, and electromagnetic interference in industrial sites directly affect the operational stability of instruments. The BJ series vortex flowmeter has significantly improved reliability under harsh operating conditions through systematic structural design and protection optimization. Its non-blocking design eliminates holes, gaps, and gaskets that are prone to failure, and the sensor has no moving parts, reducing performance degradation caused by mechanical wear. The circuit part uses mechanical anti-vibration treatment, which can effectively filter out interference frequencies generated by mechanical vibration, allowing a vibration acceleration of up to 0.2g.
In terms of protection performance, the product has an IP65 protection rating and supports customization for IP68 rating. The housing is corrosion-resistant and dirt-resistant, and is also equipped with anti-water hammer and lightning protection designs. The detection sensor does not come into direct contact with the measured medium, further extending the service life of the equipment. The explosion-proof marking is ExdII CT6 Gb, enabling it to operate safely in explosive environments. The environmental temperature range for adaptation is -20°C to 55°C, with a relative humidity of 5% to 95%, and it can still maintain stable performance under complex environmental conditions.
4. Intelligent Adaptation: In-depth Integration of Digitalization and Convenient Operation
Modern industry has increasingly high requirements for the digitization and intelligence of flow meters. The BJ series vortex flow meters achieve the integration of measurement, control, and data transmission through intelligent design. The product is equipped with a fine, low-power 45X30 full dot matrix LCD display, which clearly shows key parameters such as instantaneous flow, cumulative flow, temperature, pressure, and frequency, with an intuitive and concise operating interface. The converter supports pulse and 4~20mA analog signal output, and simultaneously integrates RS485 and HART communication protocols, enabling seamless connection with industrial control systems to meet the needs of remote monitoring and centralized control.
In terms of parameter configuration, the product provides a rich menu of options, supporting functions such as flow unit selection, algorithm selection, and flow coefficient setting. It pre-sets 6 algorithms for different media, including conventional volumetric flow, mass flow, steam temperature and pressure compensation, etc., allowing users to flexibly configure according to actual operating conditions. RS485 communication supports address settings from 01 to 64, single or batch reading of key data such as instantaneous quantity, cumulative quantity, temperature, and pressure, and the communication baud rate can be selected as 4800bps or 9600bps, adapting to different industrial communication scenarios.
5. Installation and Maintenance: Optimized Balance between Convenience and Economy
The BJ series vortex flowmeters fully consider the actual needs of industrial sites in their installation and maintenance design, significantly reducing construction difficulty and operation and maintenance costs. In terms of installation, the meters can be installed horizontally, vertically, or obliquely. For the different characteristics of gas and liquid media, the requirements for medium flow direction and installation location selection are clearly specified: when measuring gas, vertical pipeline installation is recommended with the gas flow from bottom to top; when measuring liquid, full flow in the pipe must be ensured to effectively avoid the impact of gas-liquid mixing on measurement. Meanwhile, the product provides clear technical requirements for upstream and downstream straight pipe sections, piping concentricity, gasket installation, etc., to ensure that the impact of installation quality on measurement accuracy is minimized.
In terms of maintenance, the sensor is isolated from the process, the meter factor is constant, data repeatability is high, the converter and sensor have good mutual compatibility, and the maintenance process is convenient and fast. The product provides a detailed troubleshooting guide, which clearly identifies possible causes and solutions for common faults such as no output when power is connected, unstable readings, and inconsistent cumulative values. For example, most problems can be resolved by checking wiring, replacing the preamplifier, or recalibrating the meter factor. In addition, the product’s packaging, transportation, and storage all comply with the GB/T 9329-1999 standard to ensure stable performance of the equipment throughout its lifecycle.
Conclusion
BJ Series Vortex Flowmeter fully meets the diverse needs of modern industry for flow measurement through core application performance such as precise measurement, multi-medium adaptation, stability and reliability, intelligence and convenience, and optimized installation and maintenance. Its mature measurement mechanism based on the Karman Vortex Street principle, combined with structural optimization and digital upgrading, demonstrates significant advantages in the measurement of media such as liquids, gases, and steam, making it an ideal choice for flow monitoring in industries such as chemical, energy, pharmaceutical, and metallurgy. With the continuous improvement of industrial automation levels,vortex flowmeterswill play a more important role in accurate measurement, energy conservation and consumption reduction, process optimization, etc., providing reliable support for the efficient operation of industrial production.