Airflow Instruments Rotating Vanes

Rotating vane anemometers are valued for their simplicity and durability in HVAC applications. Airflow Instruments models help you move quickly through surveys and spot checks, capturing stable velocity readings that translate into useful CFM estimates for balancing and troubleshooting.

Where They Excel

• Grilles and Registers: Average turbulent streams and get representative velocity values.
• Intakes and Exhausts: Verify flow direction and performance at fans or rooftop units.
• Quick Balancing: Use area inputs or flow cones to convert velocity to volume for fast decisions in the field.

Key Advantages

• Averaging by Design: Larger vanes help smooth localized turbulence and deliver steady readings.
• Easy Operation: Intuitive controls and readable screens reduce training time.
• Durable Build: Field-ready housings and reliable bearings support long service life.
• Flexible Accessories: Flow cones and extension accessories adapt to different tasks.

Measurement Tips

• Orientation: Keep the vane aligned with the airflow for best accuracy.
• Traverse: For large faces, move the vane through a grid to obtain an average velocity.
• Area Accuracy: Use accurate grille dimensions when computing flow from velocity.
• Environmental Factors: Be mindful of drafts and crossflows that can skew readings.

Selecting a Model

• Vane Size: Larger vanes improve averaging; smaller vanes fit tighter spots.
• Range and Resolution: Match expected velocities for your work mix.
• Computation Features: Consider onboard area entry and flow calculation to reduce manual math.
• Data Handling: If you prepare reports, logging and export features can save time.

Rotating vane anemometers complement capture hoods and hot-wire tools by offering a fast, reliable way to assess airflow at terminals and openings. They are a practical choice for everyday HVAC diagnostics and balancing tasks.