The Verabar® provides the most accurate, reliable technology for measuring gas, liquid and steam as well as the lowest operating and installation costs.
Developed from aerospace technology, the Verabar averaging pitot flow sensor provides unsurpassed accuracy and reliability. With its solid one-piece construction and bullet shape, the Verabar makes flow measurement clog-free and precise. The unique sensor shape reduces drag and flow induced vibration. And the location of the low pressure ports eliminates the potential for clogging and improves signal stability.
How it Works
When a fluid impacts the sensor, it creates a high-pressure zone in front of the sensor. As the fluid accelerates around the sensor, a low-pressure zone is created to the sides and rear of the sensor. Multiple sensing ports are positioned in these high and low-pressure zones and an averaged differential pressure is measured.
Features
VERIS Verabar® Flow Sensor Features
- Superior performance in dirty fluids
- Stable signal
- Low permanent pressure loss
- Solid one-piece construction
- ± 1% accuracy
GREATER RESISTANCE TO CLOGGING
Clogging can occur in low-pressure ports located in or near the partial vacuum at the rear of the sensor. The VERIS Verabar® design locates the low-pressure ports on the sides of the sensor, forward of the fluid separation point and turbulent wake area. This virtually eliminates clogging and produces an extremely stable signal.
VERIFIED ACCURACY
This eliminates the need for calibration tests to characterize the coefficients. Empirical test data from independent laboratories is published in the VERIS Verabar® Flow Test Report (VED-100).
COMPLETE FLOW LOOPS
Ready to install, the VERIS Verabar® can be ordered with a manifold, transmitter or local indicating meter, flow computer and/or recorder. Complete Installation in less than an hour.
Specifications
VERIS Verabar® Flow Sensor Specifications
Regular Models
Model: V100
Components: Threaded
Type of Mounting: Tube Fitting
Support: Single Support
Model: V110
Components: Threaded
Type of Mounting: Tube Fitting
Support: Double Support
Model: V150
Components: Threaded
Type of Mounting: Spring-Lock
Support: No opposite support required
Hot Tap Models
Model: V200
Components: Threaded or Flanged
Type of Mounting: Threaded Screw Drive
Model: V400
Components: Threaded or Flanged
Type of Mounting: Flanged Screw Drive
Flanged Models
Model: V500
Components: Flanged
Type of Mounting: Flanged
Support: Single Support
Model: V510
Components: Flanged
Type of Mounting: Flanged
Support: Double Support
Model: V550
Components: Flanged
Type of Mounting: Flanged Spring-Lock
Support: No opposite support required
Applications
VERIS Verabar® Flow Sensor Applications
Gas
- Natural Gas
- Compressed Air
- Combustion Air
- Hydrocarbon Gas
- Hot Air
- Blast Furnace Gas
Liquid
- Cooling/Chilled water
- Boiler Feed Water
- De-Mineralized Water
- Hydrocarbon Liquids
- Cryogenic
- Thermal Transfer Fluids
Steam
- Saturated
- Superheated
- Main Header
- Custody Transfer
- Distribution
- Energy Studies
Q & A
VERIS Verabar® Flow Sensors Q & A
The VERIS Verabar® is a flow measurement device that utilizes an averaging pitot tube design to measure the flow of gases, liquids, and steam. Its bullet-shaped sensor creates a high-pressure zone at the front and low-pressure zones at the sides and rear. Multiple sensing ports positioned in these zones measure the differential pressure, which is then averaged to determine the flow rate. This design ensures accurate measurements even in challenging conditions.
- Superior Performance in Dirty Fluids: The Verabar® design minimizes clogging, making it ideal for applications with particulate-laden fluids.
- Stable Signal: Its design provides a consistent and reliable flow signal.
- Low Permanent Pressure Loss: The Verabar® offers minimal resistance to flow, reducing energy consumption.
- Solid One-Piece Construction: The leak-proof, solid one-piece sensor enhances durability and reliability.
- ±1% Accuracy: Ensures precise flow measurements across a wide range of applications.
Armstrong offers various Verabar® models tailored to different installation and application needs:
- V100: Threaded tube fitting with single support.
- V110: Threaded tube fitting with double support.
- V150: Threaded spring-lock; no opposite support required.
- V200: Hot tap model with threaded or flanged screw drive.
- V400: Hot tap model with threaded or flanged flanged screw drive.
- V500: Flanged model with single support.
- V510: Flanged model with double support.
- V550: Flanged model with spring-lock; no opposite support required.
Choosing the right model depends on factors like pipe size, installation type, and whether hot tap capabilities are needed.
The Verabar® is versatile and can be used across various industries, including:
- Power Generation: For measuring steam and gas flows in power plants.
- Chemical Processing: In applications requiring precise flow measurement of liquids and gases.
- Pharmaceuticals: Ensuring accurate flow measurement in critical processes.
- Food & Beverage: Monitoring steam and water flows in production lines.
- Healthcare: For steam and water flow measurement in hospital systems.
Its ability to handle a wide range of flow conditions makes it suitable for both clean and dirty fluid applications.
The Verabar® is designed for low maintenance due to its robust construction. However, periodic inspections are recommended to ensure optimal performance:
- Regular Inspections: Check for any signs of wear or damage, especially in the sensor tube.
- Cleaning: Ensure that the sensing ports are free from obstructions.
- Calibration: Verify the accuracy of measurements periodically.
- Installation Checks: Ensure that the sensor is correctly oriented and supported.
Detailed maintenance procedures can be found in the product's Installation and Maintenance Manual.
Downloads
Download VERIS Verabar® Velocity Averaging Flow Sensors Brochure
If you have any questions or are just looking for some help, we're happy to discuss your application with you. Reach out to us at (855) 737-4714 or fill out our online form.