Vortex Flow Meters
$2,845.00 – $4,450.00Price range: $2,845.00 through $4,450.00
Vortex Flow Meters are a flow measurement device best suited for flow measurements where the introduction of moving parts presents problems. Sensitivity to variations in the process conditions is low and with no moving parts has relatively low wear compared to other types of flow meters.
Vortex flow meters operate under the vortex shedding principle, where oscillating vortexes occur when a fluid such as water flows past a bluff (as opposed to streamlined) body. The frequency that the vortexes are shed depends on the size and shape of the body. It is ideal for applications where low maintenance costs are important. Industrial-size vortex meters are custom-built and require appropriate sizing for specific applications.
Description
Vortex Flow Meters are an instrument used to measure the flow rate of a fluid. It operates based on the principle of the Von Kármán effect, which states that when a fluid flows past an obstruction, it creates vortices that alternate on either side of the obstruction.
Vortex flow meters consist of a bluff body (such as a circular cylinder) placed in the flow stream. As the fluid flows past the bluff body, it creates vortices that cause pressure fluctuations. Pressure sensors located downstream of the bluff body measure these pressure fluctuations, which are proportional to the flow rate of the fluid. The advantages of vortex flow meters include their high accuracy, their ability to measure flow rates in both liquids and gases and their relatively low cost compared to other flow meters. Industries commonly use them in applications such as water and wastewater treatment, HVAC systems, and process control in industrial plants.
However, vortex flow meters may not be suitable for applications where the fluid contains solid particles or where the flow rate is very low. Additionally, you may need to calibrate them periodically to maintain their accuracy, and changes in fluid temperature and viscosity can affect their accuracy.
Vortex Flow Meter Working Principle
When the medium flows through the bluff body at a certain speed, it generates an alternating vortex belt behind the sides of the bluff body. called the “von Karman vortex“. Since both sides of the vortex generator alternately generate the vortex, pressure pulsation is generated. The generator creates vortices on both sides, causing the detector to produce alternating stress.
The piezoelectric element encapsulated in the detection probe body generates an alternating charge signal. The signal is the same frequency as the vortex, under the action of alternating stress. Furthermore, the signal is sent to the intelligent flow totalizer to be processed after being amplified by the pre-amplifier. It will realize displaying instantaneous flow and cumulative flow of fluid, communicating and controlling flow data and the microcomputer system. In conclusion, a certain range of Reynolds number (2×10^4~7×10^6), the relationship among vortex releasing frequency fluid velocity V.
You can express the vortex generator facing the flow surface width with the following equation:
Vortex Flow Meter Features
- The unique isolated sensor design allows for replacement without breaking the process seal
- Increase plant availability and reduce potential leak points with a gasket-free meter body with no moving parts
- Eliminate downtime and maintenance costs associated with plugged impulse lines with a non-clog meter body design
- Achieve vibration immunity with a mass balanced sensor and Adaptive Digital Signal Processing with visual filtering
- A standard internal signal generator included in every meter simplifies electronic verification
- All meters arrive pre-configured and hydrostatically tested, making them ready and easy to install
- Simplify SIS compliance with available dual and quad Vortex
If the Vortex Flow Meter does not meet your application requirements pls look at another type of flow meter below
Turbine Flow Meter
Coriolis Flow Meter
Ultrasonic Flow Meter
Electromagnetic Flow Meter
Specifications
Flow Range
- Minimum Flow Rate: 0.1 m³/h (or 0.05 GPM)
- Maximum Flow Rate: 1000 m³/h (or 4000 GPM)
Accuracy
- Measurement Accuracy: ±0.5% of reading
- Repeatability: ±0.1% of reading
Temperature Range
- Operating Temperature: -40°C to +150°C (-40°F to +302°F)
Pressure Rating
- Maximum Pressure: 40 bar (or 580 psi)
Pipe Size
- Supported Pipe Sizes: 1″ to 12″ (25 mm to 300 mm)
Fluid Compatibility
- Compatible Fluids: Water, oil, gases, and various chemicals
- Material Compatibility: Stainless steel, Hastelloy, Teflon (depending on model)
Output Signal
- Analog Output: 4-20 mA
- Digital Output: Pulse, HART, Modbus (optional)
Body Material
- Standard Material: Stainless steel (304/316)
- Optional Materials: Carbon steel, Hastelloy, Titanium
Mounting Type
- Mounting Options: Flange, threaded, or sanitary connections
Power Supply
- Supply Voltage: 24 VDC ±10%
Installation Requirements
- Straight Run Requirements: 5D upstream and 2D downstream for optimal performance (D = pipe diameter)
Display and Interface
- Display Type: LCD with backlight
- User Interface: Keypad or touchscreen for setup and calibration
Maintenance Requirements
- Maintenance Interval: Typically, 1 year, or as per manufacturer’s recommendation
- Cleaning: Can be cleaned in place (CIP) with standard procedures
Environmental Protection
- Ingress Protection Rating: IP67
Certifications
- Standards Compliance: ISO, CE, ATEX (for hazardous areas)
Installation
To install a vortex flow meter, follow these procedures:
Begin by ensuring that the installation site is prepared and that the meter is compatible with the pipe size and fluid type. First, verify that the pipeline is clean and free of debris to prevent damage to the meter and ensure accurate measurements.
Next, if the meter is flanged, align it with the pipeline flanges and ensure that the gasket is properly seated. For threaded installations, apply appropriate thread sealant to prevent leaks. Make sure the meter is oriented according to the manufacturer’s instructions, typically ensuring the flow direction matches the flow meter’s marked direction arrow.
After positioning the meter, securely fasten it to the pipeline using the appropriate bolts or threads. It is crucial to tighten these connections evenly to avoid stressing the meter. For flanged meters, use a cross-pattern tightening sequence to ensure an even seal. If the meter has any mounting brackets or supports, secure these according to the manufacturer’s recommendations.
Once the meter is physically installed, connect the electrical wiring as specified in the user manual. Ensure that the power supply connections are properly made, and double-check the signal output wiring to match the system’s requirements. If the meter features any communication protocols, connect these as needed.
After wiring, verify that all connections are secure and that there are no signs of leakage. Before powering on the system, conduct a preliminary check to confirm that the meter is properly aligned and installed.
Power up the meter and check for any error messages or calibration prompts on the display. Follow the manufacturer’s instructions to calibrate the meter if necessary, ensuring that it is accurately measuring the flow according to the specifications.
Finally, conduct a thorough system test to ensure that the meter is functioning correctly and providing accurate readings. Check for leaks, verify that the output signal matches the expected values, and make any final adjustments as needed.
Ensure that all installation documentation is completed and stored, and inform relevant personnel about the new installation and any specific operating procedures or maintenance requirements.
Maintenance
To maintain a vortex flow meter, start by conducting regular inspections to ensure that the device is functioning properly. Begin by visually checking the meter for any signs of physical damage or wear. Look for leaks, corrosion, or any obstructions around the flow meter and its connections.
Periodically verify that the electrical connections and wiring are secure and free from damage. Ensure that the signal output is stable and consistent with expected values. If the flow meter features a display, check it for any error messages or warnings that might indicate a need for attention.
Cleaning the flow meter is crucial for maintaining accuracy and performance. Follow the manufacturer’s recommendations for cleaning procedures, which may involve using specific cleaning agents or techniques. For in-line cleaning, ensure that the meter is isolated from the flow, if necessary, before starting the cleaning process.
Perform calibration checks at regular intervals as recommended by the manufacturer. Calibration ensures that the meter continues to provide accurate readings over time. Follow the calibration procedures outlined in the user manual and make adjustments as needed to maintain accuracy.
Inspect the meter’s environment to ensure it remains within the operational temperature and pressure ranges specified by the manufacturer. Extreme conditions can affect the performance and longevity of the meter.
For meters in hazardous or extreme conditions, consider more frequent checks and maintenance to ensure reliable operation. Replace any worn or damaged parts promptly to prevent further issues and maintain optimal performance.
Finally, document all maintenance activities, including inspections, cleaning, calibrations, and any repairs. Keeping detailed records helps in tracking the meter’s performance and scheduling future maintenance tasks. If any issues arise that cannot be resolved through standard maintenance procedures, consult the manufacturer or a qualified technician for further assistance.
Q&A
Q1: What is a vortex flow meter and how does it work?
A1: A vortex flow meter is a device used to measure the flow rate of fluids by detecting the vortices shed by an obstruction placed in the flow path. As the fluid flows past the obstruction, it creates alternating vortices on either side of the obstruction. The frequency of these vortices is proportional to the flow rate of the fluid. The vortex flow meter detects these vortices and converts the frequency into an electrical signal that corresponds to the flow rate.
Q2: What types of fluids can be measured with a vortex flow meter?
A2: Vortex flow meters are versatile and can measure a wide range of fluids, including water, oil, gases, and various chemicals. The specific compatibility depends on the materials used in the construction of the flow meter and the fluid’s properties, such as temperature and pressure.
Q3: What are the key factors to consider when installing a vortex flow meter?
A3: Key factors for installation include ensuring that the pipeline is clean and free from debris, aligning the meter with the flow direction marked on the device, and securing it properly to avoid leaks. It’s also important to adhere to the recommended straight run requirements before and after the meter to ensure accurate measurements. Electrical connections should be properly made and verified.
Q4: How often should a vortex flow meter be calibrated?
A4: The frequency of calibration depends on the manufacturer’s recommendations and the specific application. Generally, calibration should be performed at least once a year or more frequently if the meter is subjected to harsh operating conditions or significant changes in the process.
Q5: What are common maintenance tasks for a vortex flow meter?
A5: Common maintenance tasks include regular inspections for physical damage, checking for leaks, verifying the stability of electrical connections, and cleaning the meter according to the manufacturer’s guidelines. Calibration checks should be performed periodically to ensure accuracy. Documenting all maintenance activities is also important for tracking the meter’s performance.
Q6: Can vortex flow meters handle high temperatures and pressures?
A6: Vortex flow meters can handle a range of temperatures and pressures, but the specific limits depend on the model and materials used. Always refer to the manufacturer’s specifications for the maximum allowable temperature and pressure to ensure the meter is suitable for your application.
Q7: What should I do if my vortex flow meter displays an error message?
A7: If an error message appears, consult the user manual for troubleshooting steps specific to the error code. Common issues might include calibration errors, electrical connection problems, or environmental factors. If the problem cannot be resolved through basic troubleshooting, contact the manufacturer or a qualified technician for further assistance.
Q8: Are vortex flow meters suitable for all types of fluids?
A8: While vortex flow meters are suitable for many types of fluids, they may not be ideal for fluids with very low viscosity, such as gases, or for fluids with high levels of particulates or turbulence. It’s essential to ensure that the flow meter’s materials and design are compatible with the specific characteristics of the fluid being measured.
Advantages / Disadvantages
Advantages
Wide Range of Applications: Vortex flow meters are versatile and can measure a variety of fluids, including liquids, gases, and steam. They are commonly used in industries such as oil and gas, chemicals, water treatment, and HVAC.
No Moving Parts: Because vortex flow meters operate on the principle of detecting vortices created by an obstruction in the flow, they do not have moving parts. This reduces wear and tear, leading to lower maintenance requirements and longer service life.
High Accuracy and Repeatability: These meters offer high accuracy and repeatability in flow measurement. The frequency of vortex shedding is directly proportional to the flow rate, which can be measured with high precision.
Robustness and Durability: Vortex flow meters are robust and can handle harsh operating conditions, including high pressures and temperatures, depending on the model. They are generally resistant to vibration and other environmental factors.
Minimal Pressure Drop: The obstruction used in vortex flow meters creates a relatively small pressure drop compared to other types of flow meters, which helps in maintaining system efficiency.
No Need for Calibration with Flow Profile Changes: Vortex meters are less sensitive to changes in flow profile compared to some other flow meter types, which means they often require less frequent recalibration when the flow conditions vary.
Disadvantages
Sensitivity to Low Flow Rates: Vortex flow meters may not perform well at very low flow rates, as the vortices generated can be too weak to detect accurately. This limits their use in applications with low flow conditions.
Installation Requirements: To achieve accurate measurements, vortex flow meters require a certain amount of straight pipe run before and after the meter. This requirement can be challenging in compact or constrained installation spaces.
Accuracy Affected by Viscosity: Vortex meters can be affected by changes in fluid viscosity. For fluids with varying viscosities, the accuracy of the measurements may be compromised.
Not Suitable for All Fluids: Vortex flow meters are generally not suitable for fluids with high levels of particulates or slurries, as these can interfere with the vortex shedding process and affect accuracy.
Initial Cost: The initial cost of vortex flow meters can be higher compared to some other types of flow meters, which might be a consideration for budget-conscious projects.
Temperature and Pressure Limitations: While vortex flow meters can handle a range of temperatures and pressures, there are limits to these parameters. Exceeding these limits can affect performance or damage the meter.
In summary, vortex flow meters are a reliable and versatile option for many flow measurement applications, offering advantages in durability and accuracy. However, they may not be the best choice for all situations, particularly where low flow rates, varying viscosities, or installation constraints are factors.
Applications
Vortex flow meters are used in a variety of applications due to their versatility and reliability. Here are some common applications:
Oil and Gas Industry:
- Production and Refining: Measuring the flow of crude oil, refined products, and natural gas in pipelines and processing plants.
- Distribution: Monitoring flow rates in distribution networks and ensuring accurate billing.
Chemical Processing:
- Reactions and Mixing: Monitoring and controlling the flow of chemicals in reactors, mixers, and other processing equipment.
- Quality Control: Ensuring precise measurement of chemical ingredients to maintain product quality.
Water and Wastewater Treatment:
- Water Supply: Measuring the flow of treated water in municipal water systems.
- Wastewater Management: Monitoring flow rates in wastewater treatment plants to manage treatment processes and comply with regulatory requirements.
HVAC Systems:
- Heating and Cooling: Measuring the flow of water or steam in heating and cooling systems to ensure efficient operation and energy use.
- Building Management: Monitoring and controlling the flow of fluids in building climate control systems.
Power Generation:
- Steam Flow Measurement: Measuring steam flow in power plants to optimize efficiency and performance.
- Cooling Systems: Monitoring the flow of cooling water or other fluids in power generation systems.
Food and Beverage Industry:
- Ingredient Measurement: Accurate measurement of liquid ingredients in food and beverage production processes.
- Quality Assurance: Ensuring consistent flow rates for product quality and safety.
Pharmaceutical Industry:
- Drug Production: Monitoring the flow of active ingredients and solvents in pharmaceutical manufacturing processes.
- Compliance: Meeting stringent regulations for accurate measurement and process control.
Pulp and Paper Industry:
- Process Control: Measuring the flow of water and chemicals in pulp processing and paper production.
- Quality Control: Ensuring accurate flow rates for consistent product quality.
Mining and Metals:
- Slurry Flow Measurement: Measuring the flow of slurries and other fluids in mining operations and metal processing.
- Process Optimization: Enhancing the efficiency of mineral processing and metal extraction processes.
Automotive Industry:
- Cooling Systems: Monitoring coolant flow in automotive cooling systems for optimal engine performance.
- Fluid Transfer: Measuring the flow of fluids during manufacturing and assembly processes.
Energy Sector:
- Biomass and Renewable Fuels: Measuring the flow of renewable fuels such as biofuels in energy production.
- Fuel Management: Monitoring fuel flow in energy generation and distribution systems.
Vortex flow meters are valued for their durability and reliability across these diverse applications, providing accurate flow measurement in both industrial and commercial settings.
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