Alnor Rotating Vanes

When testing airflow at grilles, exhausts, and large openings, rotating vane anemometers offer a simple, robust approach. Alnor vanes translate rotating speed into velocity and derived volume flow, giving commissioning agents and facility teams practical, repeatable results without complex setup.

Why choose rotating vanes:

• Ideal for large openings: Vane averaging helps smooth out local flow variations that can complicate point measurements.
• Quick, actionable results: Minimal setup and clear displays help keep surveys moving across busy industrial sites.
• Durable and portable: Designed for everyday use, with protective cases that stand up to field conditions.
• Data options: Logging and export capabilities support reporting and long-term trending.

Use cases in industrial environments:

• HVAC balancing: Verify supply and return performance at grilles across production floors and support spaces.
• Exhaust and make-up air checks: Confirm airflow delivery for process-related ventilation where large openings are common.
• Troubleshooting: Identify zones with low or inconsistent airflow and validate corrective actions after damper or fan adjustments.
• Energy initiatives: Support demand-based ventilation projects by comparing measured airflow against targets.

Good measurement practice:

• Measure at the center and multiple positions if needed, especially at very large grilles.
• Maintain steady orientation and distance per instrument guidance to improve repeatability.
• Use vane area inputs and appropriate units for on-screen volume flow calculations.
• Pair with capture hoods when measuring at diffusers that require sealed face readings.

Selection tips:

• Choose vane size based on typical openings; larger vanes suit large grilles and exhausts, smaller vanes help in tighter spaces.
• Consider models with integrated temperature if psychrometrics or comfort diagnostics are part of your tasks.
• Evaluate logging features and interface preferences to match your reporting workflows.

Benefits realized:

• Faster surveys without sacrificing measurement quality.
• Consistent measurements that support balancing outcomes and documentation requirements.
• Practical tools that help teams verify airflow delivery and identify opportunities for energy savings.

Service and support:
Calibration services and technical guidance from TSI help keep your rotating vane anemometers aligned with your quality processes. Training resources are available to standardize methods across crews and sites.

Put reliable, easy-to-use airflow testing in your team’s hands. Contact TSI to select an Alnor rotating vane anemometer tailored to your facility’s needs.