Air Velocity Transducers

When airflow needs to be measured continuously, Air Velocity Transducers provide a dependable signal for control loops, trending, and alarms. These fixed sensors help HVAC and controls teams monitor critical points where stable airspeed is essential.

Where They Are Used

• VAV and Terminal Units: Provide velocity feedback for damper control and airflow verification.
• Air Handlers and Filter Racks: Trend pre- and post-filter velocities to inform maintenance.
• Clean Spaces and Labs: Monitor low-airflow conditions in cleanrooms, test areas, and fume hood exhausts.
• Process Ventilation: Track exhaust and makeup air in light industrial or specialized environments.

Key Features

• Low-Flow Sensitivity: Capture accurate readings at low velocities common in clean and controlled areas.
• Temperature Compensation: Support stable outputs across typical HVAC temperature ranges.
• Analog Outputs: 0–10 V or 4–20 mA for seamless integration with building automation systems.
• Compact, Install-Friendly: Small footprints and straightforward mounting support fast deployment.

Integration Tips

• Location Matters: Place sensors in straight duct runs with adequate upstream/downstream distance to reduce turbulence effects.
• Power and Signal: Verify power supply and signal scaling match your controller input configuration.
• Commissioning: Validate readings with a portable reference meter during setup and after controls tuning.
• Maintenance: Establish a cleaning and verification schedule, especially in dusty or process environments.

Selection Considerations

• Velocity Range: Match your control setpoints and expected operating envelope.
• Output Type: Choose voltage or current loop based on BMS requirements and run length.
• Environmental Conditions: Confirm temperature and humidity ranges match your application.
• Accessories: Consider mounting hardware, straightening vanes (where needed), and protective housings.

By delivering a stable, scalable airflow signal, these transducers help controls teams tune systems for comfort, efficiency, and process needs.