Dwyer AVUL‑5DA1 Air Velocity Transmitter – Accurate Airflow Measurement for HVAC/BMS

The Dwyer AVUL‑5DA1 Air Velocity Transmitter provides 4–20 mA / 0–10 V outputs for precise airflow monitoring, ideal for HVAC and BMS systems. Available from DLK official distributor.

Overview of Dwyer AVUL‑5DA1 Air Velocity Transmitter

The Dwyer AVUL‑5DA1 Air Velocity Transmitter is a duct‑mounted device that measures air velocity and outputs an analog signal proportional to the airflow. It is widely used in HVAC and building automation systems (BMS) to monitor airflow in real time and optimize ventilation performance. The transmitter supports multiple output options including 4–20 mA, 0–5 VDC, and 0–10 VDC for seamless integration with controllers and PLCs.

DLK – DLK TRADING SERVICE COMPANY LIMITED is the official distributor of Dwyer Instruments in Vietnam, providing genuine AVUL‑5DA1 units with full certification and technical support. Detailed information is available on the Dwyer AVUL‑5DA1 Air Velocity Transmitter page.

Operating Principle of Dwyer AVUL‑5DA1

The AVUL‑5DA1 operates as an air velocity transmitter, converting airflow across its sensing probe into a proportional electrical signal. The device uses a thermal or drag‑type sensing element to detect air movement, and the measured velocity is scaled to the selected analog output. Users can configure the transmitter range and output type in the field, enabling flexible deployment across different duct sizes and airflow rates.

This ensures accurate airflow monitoring, supports automated HVAC control, and allows real-time feedback for energy-efficient ventilation. For guidance on selecting the appropriate transmitter for BMS integration, refer to Selecting Dwyer Sensors for BMS.

Real-World Applications Across Industries

In commercial HVAC systems, the Dwyer AVUL‑5DA1 Transmitter measures supply and return air velocity, enabling proper balancing of airflow throughout the building. It helps prevent energy waste and maintains comfort by adjusting fan speeds based on actual airflow.

In cleanroom and pharmaceutical environments, the transmitter ensures that airflow meets strict regulatory requirements. The analog signal can be monitored by a BMS to maintain differential pressure and cleanroom classification.

In industrial ventilation and process exhaust systems, the AVUL‑5DA1 provides real-time airflow data to regulate fans and trigger alarms if flow falls below or exceeds safe limits, protecting equipment from overheating or operational hazards.

In laboratory and environmental monitoring, continuous velocity measurement ensures a safe working environment and supports compliance with ventilation standards. For broader context on choosing air velocity sensors for ducts, see Dwyer AVUL‑5DA1 Air Velocity Transmitter.

Benefits of Using Dwyer AVUL‑5DA1

The AVUL‑5DA1 Transmitter provides accurate, reliable airflow monitoring with ±5% reading accuracy. Field-selectable ranges and multiple analog outputs make it adaptable for various duct sizes and airflow conditions. The transmitter reduces the need for frequent calibration and allows direct connection to BMS, PLCs, or HVAC controllers.

The robust NEMA 4X/IP66 enclosure ensures durability in humid or dusty duct environments. Quick response times and configurable outputs enable real-time control and alarm functions, supporting energy efficiency and operational safety.

Key Technical Specifications

How to Select the Right Model

When selecting the Dwyer AVUL‑5DA1, consider expected airflow velocity, duct size, and required analog output type. The AVUL‑5DA1 offers flexible output options and field-selectable ranges, suitable for HVAC, cleanroom, and industrial ventilation systems. Optional variants with integrated displays are available for applications needing local readout.

Why Purchase from DLK

DLK – DLK TRADING SERVICE COMPANY LIMITED is the official Dwyer distributor in Vietnam, ensuring authentic AVUL‑5DA1 transmitters with proper documentation, warranty, and technical support. Buying through DLK guarantees correct selection and integration into your HVAC or BMS project.

Full product details are available at Dwyer AVUL‑5DA1 Air Velocity Transmitter.