Vortex flow meters (VFM) have long served industries via robust non-intrusive flow measurement. However, modern upgrades are transforming these meters into multidimensional intelligent instruments. Through multi-variable detection and digitalization, the latest vortex flow meters assess dynamic process conditions more comprehensively than ever.

Contemporary VFM designs integrate sophisticated sensor arrays, with some featuring up to six independent sensor crystals positioned strategically around the meter body. This multi-point velocity profiling resolves non-ideal installation effects for enhanced volumetric calculation accuracy. Some meters also leverage secondary temperature, pressure and density sensors to provide real-time mass flow measurement through compensation of fluid property variations.

Advanced microprocessors and software algorithms powering VFMs facilitate deeper diagnostics. Robust digital signal processing evaluates sensor and signal quality continuously. Analytics monitor for subtle signs like sensor degradation or plugging that could compromise integrity. Such condition monitoring prevents measurement issues before resulting in unplanned downtime.

Remote communications like HART, PROFIBUS and Modbus translate VFM diagnostics into actionable insights without site visits. Manufacturers are also exploring predictive maintenance through cloud-based condition monitoring as a service (CMaaS). Continuous online health tracking through such methods can lower long-term costs versus periodic inspection and repairs.

Looking ahead, integrating artificial intelligence and historical databases may support virtual metering during maintenance. VFM-collected big data, when trained on machine learning models, shows potential to detect upstream equipment faults from flow profile changes. Ultimately, VFM technology may realize multidimensional process section digital twins beyond primary element functions alone.

In summary, through enhanced multi-variable sensing, digitalization and remote connectivity, modern intelligent vortex flow meters assess applications and assets more comprehensively. Their evolving evaluation capabilities will play a vital optimization role on Industry 4.0 production platforms.

Differential pressure (DP) flow meters are a staple in the power plant industry, where reliable and accurate flow measurement is crucial for efficient and safe operations. These meters, which measure flow rate by calculating the pressure difference created by a constriction in the pipeline, are not only highly versatile but also relatively simple and cost-effective.

 

Working Principle and Components

 

DP flow meters operate on the basic principle of creating a pressure difference within the fluid flow. This is typically achieved through the use of an orifice plate, Venturi meter, or other flow restrictions. As the fluid passes through the constriction, its velocity increases, resulting in a corresponding decrease in pressure. This pressure difference, known as differential pressure, is directly proportional to the fluid's flow rate.

 

The main components of a DP flow meter include the flow restriction, pressure taps, and a differential pressure transmitter. The flow restriction, such as an orifice plate, is responsible for creating the pressure difference. Pressure taps, located upstream and downstream of the restriction, measure the pressure at these points. The differential pressure transmitter then calculates the difference between these two pressures and converts it into a usable signal for flow rate indication or control.

 

Types of DP Flow Meters and Their Applications

 

• Orifice Plate Flow Meters: These are the most commonly used DP flow meters in the power plant industry. They consist of a thin plate with a hole in the center, which creates the necessary pressure difference. Orifice plates are suitable for measuring the flow of liquids, gases, and steam.


• Venturi Meters: Venturi meters have a converging-diverging section that accelerates the fluid and creates a low-pressure area. They are less commonly used than orifice plates but offer higher accuracy and lower permanent pressure loss. Venturi meters are suitable for measuring the flow of clean liquids and gases.


• Flow Nozzles: Flow nozzles are similar to Venturi meters but have a more complex shape that offers even higher accuracy. They are typically used in high-pressure and high-temperature applications where precise flow measurement is critical.

 

 

Advantages and Disadvantages of DP Flow Meters

 

One of the main advantages of DP flow meters is their simplicity and low cost. They require minimal maintenance and can be easily installed in existing pipelines. Additionally, they offer a wide range of applications, from measuring water flow in cooling systems to air flow in ventilation systems.

 

However, DP flow meters also have some disadvantages. They are sensitive to changes in fluid density and viscosity, which can affect measurement accuracy. Moreover, clogging of the flow restriction can occur in dirty or particulate-laden fluids, leading to inaccurate readings. Regular maintenance and inspection are therefore essential to ensure the reliability and accuracy of DP flow meters.

 

Conclusion

 

In conclusion, differential pressure flow meters play a crucial role in the power plant industry, providing accurate and reliable flow measurement for a wide range of applications. While they have some limitations, such as sensitivity to fluid properties and the need for regular maintenance, their simplicity, versatility, and cost-effectiveness make them a popular choice for flow measurement in power plants. As technology continues to evolve, we can expect further improvements in the design and performance of DP flow meters, enabling even more efficient and safe operations in the power plant industry.

The GF Series Gear Flow Meter, offered by Sino-Inst, is a highly accurate and reliable flow measurement solution for a wide range of fluids. With models ranging from GF02 to GF32, this flow meter series caters to different flow rate requirements, ensuring precise measurement for various applications.

 

 

Each model in the GF Series is designed with precision-machined gears that rotate as the fluid flows through the meter. This rotation is then translated into an electrical signal, providing a direct and accurate measurement of the fluid's flow rate. The meter's compact design and robust construction ensure reliable performance even in harsh environments.

 

 

The GF Series Gear Flow Meter is suitable for measuring a wide range of fluids, including oils, fuels, and other liquid media. Its versatility makes it an ideal choice for applications in the petrochemical, automotive, and industrial sectors.

 

 

Key features of the GF Series Gear Flow Meter include:

 

 

• High accuracy and repeatability


• Wide flow rate range


• Compact and robust design


• Suitable for a variety of fluids


• Easy installation and maintenance

 

 

 

With its combination of accuracy, versatility, and durability, the GF Series Gear Flow Meter is the perfect choice for demanding flow measurement applications. Select the appropriate model from GF02 to GF32 based on your specific flow rate requirements and enjoy the benefits of precise and reliable flow measurement.

 

 

 

 

Note: Please visit our website for more detailed specifications and information on each individual model.

Leader of High Frequency Pressure Measurement Solutions

 

Sino-Inst is a leading manufacturer of professional high frequency pressure transducerin China. We have been dedicated in the research and development of dynamic pressure instrumentation for over 10 years. Our SI-90 high frequency pressure sensoris specially designed for rapid pressure signal measurement with measurement bandwidth up to 200KHz.

 

Comprehensive Pressure Sensor Product Lines

 

In addition to high frequency pressure sensors, Sino-Inst also provides a full portfolio of industrial pressure sensorsto satisfy various application requirements. The pressure measuring range can be customized from -100KPa to 1000MPa. We support different process connections, electrical outputs, operating temperatures, sealing forms, explosion-proof grades and materials.

 

Non-Contact Level Measurement Expert

 

As a leading radar level transmitter manufacturer, we offer 80GHz high accuracy radar level transmitterswith measurement range up to 150m and accuracy of ±1mm. The 3°beam angle design ensures stable measurement under diverse process conditions. It is widely applied in bulk solid and liquid storage tanks.

 

Global Supply and Service Support

 

We have built long-term cooperation with numerous process industries and engineering companies around the world. You can check our other Products including flow meters, temperature and level instruments. We offer OEM/ODM service and ensure quick delivery. Our professional local agents provide one-stop solution from technical consultation to after-sale maintenance.

We are excited to announce that Drawell Analytical will be showcasing our latest advancements in laboratory equipment at the upcoming Shenzhen Exhibition. Among our top-tier products is the biosafety cabinet, an essential tool for laboratories working with potentially hazardous pathogens. Our laminar flow cabinet features an enclosed, ventilated workspace designed to ensure maximum safety for both researchers and the environment. Equipped with safety laminated glass, electrical sockets, and valves, it is engineered to meet the stringent requirements of any laboratory setting.

 

The microprocessor system with an LCD digital display makes operating and monitoring the cabinet air velocity seamless and efficient. Contaminated air is meticulously managed through HEPA filters and a robust blower system. Dirty room air is drawn into the front of the cabinet, where it mixes with contaminated air from within. This contaminated air is then pushed below the work surface, moving through the plenum located on the back side and rising up to the blower, ensuring a clean and safe working environment.

 

One of the key features of our biosafety cabinet is the efficient HEPA filtration system. Contaminated air is pushed through these filters by the cabinet's blower motor, with 30% of the filtered air recirculating into the room or being removed by canopy exhaust, and 70% entering the cabinet from above. This air flows down onto the work surfaces under unidirectional flow, which is crucial for preventing cross-contamination between samples. The laminar flow ensures that the air supply inside the chamber is evenly distributed around the work surface.

 

The air supply inside the chamber also provides an essential protective air curtain on the front space of the biosafety cabinet, which not only protects the samples but also ensures the safety of the researcher. This comprehensive protection mechanism supports three critical aspects: researcher safety, sample integrity, and environmental safety. For more details on our advanced biosafety cabinets, visit our product page.

 

We invite all attendees of the Shenzhen Exhibition to visit our booth and witness firsthand the high standards of safety and efficiency that Drawell Analytical brings to the table. Our team of experts will be on hand to provide detailed demonstrations and answer any questions you might have about our products, including the innovative biosafety cabinet. Don't miss this opportunity to explore our range of laboratory solutions and discover how we can help enhance your laboratory's performance and safety.

7.

 

Differences Between Laminar Flow Cabinet and Biosafety Cabinet from Drawell Analytical

 

Both laminar flow cabinets and biosafety cabinets are commonly used in microbiology labs and cell culture facilities. While they serve similar purposes of maintaining sterile workspaces, there are important distinctions between these two containment systems.

 

 

 

Laminar Flow Cabinet

 

A laminar flow cabinet, also known as a biosafety enclosure, uses HEPA filtration to generate laminar, particle-free airflow over the work surface. This maintains aseptic conditions within the cabinet.

 

Design and Airflow

 

Drawell offers vertical and horizontal laminar flow hood. Vertical models have a downward unidirectional airflow while horizontal cabinets provide lateral airflow towards the operator.

 

In both designs, air enters through pre-filters before passing through HEPA filters rated at 99.97% efficiency for particles 0.3 microns or larger. The purified air exits uniformly over the work area, protecting samples from external contamination.

 

Applications

 

Laminar flow cabinets are suitable for cell culture, handling non-pathogenic microbes, assembling sterile medical devices, and other aseptic processes that don't require full operator or environmental protection.

 

Common industries adopting laminar flow cabinets include pharmaceuticals, biotechnology, healthcare, cosmetics, and food production. Drawell models support workloads from research labs up to FDA-compliant manufacturing suites.

 

Advantages and Limitations

 

Key benefits include maintaining a consistent, ultra-clean working environment. However, laminar flow cabinets do not fully isolate users or the immediate workspace from surrounding unfiltered air.

 

Biosafety Cabinet

 

Biosafety cabinets provide graduated containment for hazardous biological agents or toxins handled in research and healthcare facilities, protecting users, samples and the environment.

 

Classification System

 

Biosafety cabinets are classified according to their protective capabilities into Classes I, II and III. Higher classes indicate stronger isolation of the hazard from personnel and surrounding areas.

 

Class II Biosafety Cabinet

 

Class II cabinets provide product, personnel and environmental protection. 70% of HEPA-filtered air is discharged over the work area while 30% exits through an exhaust plenum before double filtration.

 

Types A1, A2, B1 and B2 denote design variations in the exhaust handling system and captured airflow percentages.

 

Class III Biosafety Cabinet

 

Offering the highest level of containment, Class III cabinets operate as fully enclosed, negative pressure gloveboxes. All air passes through HEPA filtration before accessing the operator's gloves.

 

Applications

 

Biosafety cabinets see extensive adoption in pharmaceutical R&D, infectious disease research, hospitals and reference labs for handling biohazard risk groups 2 and higher agents requiring high-security containment.

 

Key Benefits and Considerations

 

Biosafety cabinets isolate workers, surrounding areas and samples from hazardous materials. However, they tend to have higher installation and operational costs than laminar flow cabinets.

 

Selection Factors

 

Choosing between laminar flow cabinets and biosafety cabinets comes down to the intended application, required specimen or personnel protection levels, containment standards and equipment budget.

 

Drawell's product ranges include models suited for cell culture, microbiology, teaching labs, biomanufacturing cleanrooms and high-security containment facilities conducting the most advanced life science research.

 

Drawell Support Services

 

Drawell experts can assist with cabinet selection based on intended use, local regulations and facility requirements. Comprehensive services include technical support, ongoing preventive maintenance contracts, validation and re-certification.

 

An authorized service team provides on-site repair and parts replacement to minimize downtime. Remote diagnostics help troubleshoot issues without risk of contamination.

 

Conclusion

 

In summary, laminar flow cabinets and biosafety cabinets both serve to maintain aseptic work environments, but their differing design principles and containment capabilities make one type more suitable than the other depending on the specific application parameters and safety needs.

 

Drawell offers a broad selection of these containment solutions along with expert guidance to identify the best-fit model. Contact us to discuss your research or manufacturing needs.